J/A+AS/105/211 J/A+AS/105/211 Optical identification status of 1Jy catalogue M Stickel K Meisenheimer H Kuehr Astron. Astrophys. Suppl. Ser. 105 211 1994 1994A&AS..105..211S III/175 : (Optical spectroscopy of 1Jy, S4 and S5 sources) J/A+AS/98/393 : ( ) J/A+AS/103/349 : ( ) J/A+AS/105/67 : (Optical identifications from 1Jy, S4, S5) J/A+AS/105/211 : (Optical identification of 1Jy) J/A+AS/115/11 : (Optical identifications from 1Jy, S4, S5) Cross identifications Radio sources BL Lacertae objects: general catalogs galaxies: general quasars: general radio continuum: galaxies Optical identifications, magnitudes, redshifts, and polarization data have been gathered from an extensive literature search to form an update of the optical data for the radio sources of the 1 Jy catalogue. Of the 527 radio sources in the revised catalogue, 97% have optical counterparts, and redshifts are given for 90% of the optically identified sources. For all but a few sources, accurate interferometer radio position are provided. References are made to well known compilations as well as to individual papers, often supplemented by special notes on individual objects.

Seq Sequence Number --- Name Object name --- m Magnitude of the optical identification mag Type Type of the optical identification --- l_z limit flag for lower redshift limits --- z redshift of the optical identification --- u_z uncertainty sign for uncertain redshifts --- l_Pol limit flag on Pol --- Pol. "True" optical polarization % n_P Polarization flags v = polarization variable g = polarization contaminated by galaxy light ? = variability uncertain --- e_P error of polarization measurement --- N(P) number of polarization measurements n = more than 10 polarization measurements --- Ref references to polarization measurements and other catalogues number=1 References: B Hewitt & Burbidge (1993) Be Hewitt & Burbidge (1991) C Spinrad et al. (1985) G Burbidge & Crowne (1979)) W Wall & Peacock (1985) V Veron-Cetty & Veron (1991) BH75 Babadzhanyants & Hagen-Thorn (1975) BIEA81 Biermann et al. (1981) BREA86 Brindle et al. (1986) CEA88 Courvoisier et al. (1988) FM88 Fugmann & Meisenheimer (1988) IT88 Impey & Tapia (1988) IT90 Impey & Tapia (1990) IBT82 Impey et al. (1982) ILT91 Impey et al. (1991) ISLX93 Impey et al. (1993) K76 Kinman (1976) KM93 Kock & Meisenheimer (1993) KS90 Kuehr & Schmidt (1990) L90 Luna (1990) MAR80 Marchenko (1980) MMA78 Maza et al. (1978) MEA90 Mead et al. (1990) M79 Maza (1979) MS81 Moore & Stockman (1981) MS84 Moore & Stockman (1984) PEA79 Puschell et al. (1979) PEA83 Puschell et al. (1983) PS80 Puschell & Stein (1980) SMA84 Stockman et al. (1984) SMEA86 Smith et al. (1986) SBEH87 Smith et al. (1987) SSJE93 Smith et al. (1993) ST86 Stahl et al. (1986) STREA72 Strittmatter et al. (1972) V73 Visvanathan (1973) WMSI93 Webb et al. (1993) WWB80 Wills et al. (1980) WWB93 Wills et al. (1993) --- Seq Sequence number --- Name Object name --- RAh Right ascension 1950 (hours) h RAm Right ascension 1950 (minutes) min RAs Right ascension 1950 (seconds) s DE- Declination 1950 (sign) --- DEd Declination 1950 (degrees) deg DEm Declination 1950 (minutes) arcmin DEs Declination 1950 (seconds) arcsec PosRef Reference to radio position --- S_5GHz 5 GHz flux Jy s(11-6) two-point spectral index between 11 and 6 cm --- RadTyp Type of radio spectrum SS = Steep spectrum FS = Flat spectrum --- FR-class Fanaroff-Riley classification number=1 References: A Waltman et al. (1981) AC White (1992) C Spinrad et al. (1985) CO Condon et al. (1991) D Pearson & Readhead (1988) DS Duncan & Sproats (1992) EK Ekers et al. (1989) F1 White et al. (1987) F2 White et al. (1991) FY Fey et al. (1992) I Bridle et al. (1972) J Kuehr et al. (1981a) JO Jones (1989) L Peacock & Wall (1981) M1 Morabito et al. (1982) M2 Morabito et al. (1983) M3 Morabito et al. (1985) M4 Morabito et al. (1986) MK Morganti et al. (1993) MO Jones & McAdam (1992) O1 Rawlings et al. (1990) P Perley (1982) PKS Wright & Otrupcek (1990) RO Robertson et al. (1993) RU Russell et al. (1992) S Schwarz et al. (1973) S4 Kuehr et al. (1981b) S5 Kuehr et al. (1987) TM Tadhunter et al. (1993) U Ulvestad et al. (1981) VB van Breugel et al. (1983) VC Condon (1992, priv. comm.) VG van Gorkom et al. (1989) VLA VLA Calibrator position ws Wall & Schilizzi (1979) --- SC Source (Sub)Class number=1 References: Allington-Smith J.R., Peacock J.A., Dunlop J.S. 1991, MNRAS 253, 287 Alvarez H., Aparici J., May J., Navarrete M. 1993, A&A 271, 435 Argue A.N., Kenworthy C.M., Stewart P.M. 1973, Astrophys. 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Phys. 25, 233 Wilkes B.J. 1986, MNRAS 218, 331 Willis A.G., Strom R.G., Wilson A.S. 1974, Nat 250, 625 Willis A.G., Strom R.G. 1978, A&A 62, 375 Wills B.J., Wills, D., Douglas J.N. 1973, AJ 78, 521 Wills D., Wills B.J., Breger M., Hsu J.-C. 1980, AJ 85, 1555 Wills B.J., Wills D., Breger M., Antonucci R.R.J., Barvainis R. 1993, ApJ 398, 454 Wright A.E., Peterson B.A., Jauncey D.L., Condon J.J. 1979, ApJ 229, 73 Wright A.E., Ables J.G., Allen D.A. 1983, MNRAS 205, 793 Wright A., Otrupcek R. 1990, Parkes Catalogue, Australia Telescope National Facility Xu W., Lawrence C.R., Readhead A.C.S., Pearson T.J. 1993, AJ, in press --- NS Number of Sources number= 0008-421 : The empty field classification is due to Prestage & Peacock (1983) and Torres & Wroblewski (1987). 0010+405 : The new classification as a galaxy as well as its redshift is given in Stickel & Kuehr (1993a). The redshift has previously been listed by Biermann et al. (1987), based on spectra taken by one of us (H.K.) with the Steward Observatory 90" telescope. 0019-000 : The identification and magnitude have been taken from Veron & Veron (1975). The optical counterpart has also been classified as a galaxy by McEwan et al. (1975). However, Torres & Wroblewski (1987) find an optical blank field at the radio position, which may indicate that this object is optically variable. A m = 18.4 mag galaxy has been suggested as the optical counterpart by Stanghellini et al. (1993). However, their listed J2000.0 radio position lies about 30' south of that tabulated in the PKS catalogue (Wright & Otrupcek 1990). 0022-423 : A faint optical counterpart of unknown type has been found by Torres & Wroblewski (1987). A B-band CCD image taken with the 2.2m telescope on La Silla, Chile, in October 1986 shows that this object is an unresolved QSO. The optical magnitude is taken from O'Dea et al. (1991). 0022-297 : The identification and magnitude have been taken from Bolton et al. (1965). The optical spectrum and redshift are given in Stickel et al. (1993a) 0023-263 : The identification and magnitude have been taken from Prestage & Peacock (1983). The optical counterpart has also been classified as a galaxy by Saikia et al. (1987). The redshift is given in Tadhunter et al. (1993). 0026+346 : The classification as a galaxy as well as the optical magnitude was derived from an R - band CCD image taken with the 3.5m telescope on Calar Alto, Spain, in September 1989. The image confirms the classification given by Prestage & Peacock (1983), while the classification as a QSO by Rieke et al. (1979) is rejected. 0039-445 : The identification and magnitude have been taken from Savage (1976). The optical counterpart has also been classified as a galaxy by Lue (1974). The redshift is given in Tadhunter et al. (1993). 0040+517 : The redshift has been taken from Lawrence et al. (1986). The redshift listed by Spinrad et al. (1985) and Wall & Peacock (1985) is incorrect. 0042-357 : No identification has been found in the literature. 0043-424 : The identification, magnitude and redshift have been taken from Whiteoak (1972). A different redshift is given in Tadhunter et al. (1993). 0056-572 : The identification as a QSO is due to Bolton & Savage (1977) and White et al. (1991). The optical magnitude has been taken from White et al. (1991). 0105-163 : The classification as a galaxy is due to Prestage & Peacock (1983) and Moseley et al. (1970). The redshift is given by Tadhunter et al. (1993). 0108+388 : The identification and optical magnitude have been taken from O'Dea et al. (1991). The redshift has been made available to us by C. Lawrence (1993, priv. comm.). 0112-017 : The redshift of z = 1.381 has been taken from Baldwin et al. (1989). 0113-118 : The identification and magnitude have been taken from Wright et al. (1983). The uncertain redshift given by Wright et al. (1983) has been confirmed with spectra taken by one us (H.K.) with the Steward Observatory 90" telescope and the Multiple Mirror Telescope. 0114-211 : The classification as an empty field is due to Bozyan (1979), Prestage & Peacock (1983) and Ekers et al.(1989). 0117-155 : The identification and magnitude have been taken from Fugmann et al. (1988). The optical counterpart has also been classified as galaxy by Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 0118-272 : The optical spectrum and the absorption line redshift are given in Falomo (1991) and Stickel et al. (1993b). An incorrect absorption line redshift is listed in Veron-Cetty & Veron (1991). 0131-522 : The classification of the optical counterpart as a QSO is due to Savage et al. (1976), Peterson et al. (1976) and White et al. (1991). The optical magnitude has been taken from White et al. (1991). 0138-097 : The optical spectrum and the absorption line redshift are given in Stickel et al. (1993b). 0149+218 : The radio spectral index has been taken from the Parkes catalogue (Wright & Otrupcek 1990). 0157-311 : The optical magnitude has been taken from Prestage & Peacock (1983). The redshift has been made available to us by J. A. Peacock (1993, priv. comm.). 0201-440 : This radio source has tentatively been identified with a m = 19 mag QSO by Fugmann et al. (1988). 0202+149 : The identification and magnitude were taken from Fugmann & Meisenheimer (1988). 0218+357 : The redshift of the intervening absorption line system has been measured by Browne et al. (1993) and Stickel & Kuehr (1993b). The optical magnitude is given in Stickel & Kuehr (1993b). This source is most likely a gravitational lens system (O'Dea et al. 1992a, Patnaik et al. 1993, Browne et al. 1993). 0221+067 : This source is probably optically variable, since White et al. (1988) give m = 19 mag, while Fugmann & Meisenheimer (1988) list m = 16.7 mag. 0223+341 : The identification and magnitude have been taken from Peacock et al. (1981). 0235-197 : The identification and magnitude were taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 0235+164 : The optical magnitude has been taken from Argue et al. (1973). The magnitude listed in the catalogues of Hewitt & Burbidge (1993) and Veron-Cetty & Veron (1991) refers to an optical outburst. 0252-712 : The identification and magnitude have been taken from Savage et al. (1977). The redshift is given by Tadhunter et al. (1993). 0302-623 : The identification and magnitude have been taken from Wall & Cannon (1973). 0308-611 : The identification and magnitude have been taken from White et al. (1991). 0316+162 : The identification and magnitude have been taken from Fugmann et al. (1988). The radio source has also been identified by Stanghellini et al. (1993). 0319+121 : The optical magnitude has been taken from Bolton & Ekers (1967). The redshift has been derived from several spectra taken by one of us (H.K.) with the Steward Observatory 90" telescope and the Multiple Mirror Telescope. The redshift is also listed in Spencer et al. (1989). 0332+078 : The identification and magnitude were taken from Fugmann & Meisenheimer (1988). 0347+057 : The identification and magnitude have been taken from Fugmann et al. (1988). The redshift is given by Allington-Smith et al. (1991). 0400-319 : The classification as an empty field is due to Saikia et al. (1987). 0402+379 : The identification and magnitude were taken from Wills et al. (1973). The optical spectrum and redshift are given in Stickel et al. (1993a). 0403+768 : The identification and magnitude have been taken from Peacock et al. (1981). The galaxy, which lies midway between the radio lobes, has also been detected on an R - band CCD image taken with the 2.2m telescope on Calar Alto, Spain. The redshift is given in O'Dea et al. (1991) 0407-658 : The radio source has tentatively been identified with a 18 mag QSO by Hunstead (1971) and Prestage & Peacock (1983). 0409-752 : The identification, optical magnitude, and redshift have been taken from Alvarez et al. (1993). The redshift has also been given by Tadhunter et al. (1993). 0426-380 : The absorption line redshift given in Stickel et al. (1991,1993b) is incorrectly listed as emission line redshift in the catalogue of Hewitt & Burbidge (1993). 0427-539 : The identification, magnitude, and redshift were taken from Danziger & Goss (1983). The redshift is also given by Tadhunter et al. (1993) 0437-454 : The identification and magnitude have been taken from Jauncey et al. (1989). 0442-282 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 0446+112 : The radio source has been identified with a galaxy by Hoskins et al. (1974). This identification was confirmed with a CCD image taken with the 2.2m telescope on La Silla, Chile, in October 1986, from which the R - band magnitude of m = 20.6 mag was derived. 0453-301 : The identification and magnitude were taken from Shimmins & Bolton (1974). 0454+844 : The redshift of z = 0.112 has been made available to us by C. Lawrence (1993, priv. comm.). This value is in obvious contrast to the lower limit of z > 0.2 suggested in Stickel et al. (1993b) on the basis of the unresolved appearance on the direct image. This indicates that the host galaxy of this BL Lac object has an unusually low optical luminosity (see the discussion in Stickel et al. 1993b). 0500+019 : The identification and magnitude were taken from Fugmann et al. (1988). The same optical counterpart has also been found by Torres & Wroblewski (1987) and was described as very faint and of unknown type. 0511-305 : The identification and magnitude were taken from Bolton et al. (1965). 0514-459 : The identification and magnitude have been taken from Bolton & Savage (1977). The optical spectrum and redshift are given in Stickel et al. (1993a). 0521-365 : An incorrect redshift is listed in Burbidge & Crowne (1979), Wall & Peacock (1985), Burbidge & Hewitt (1987), and Hewitt & Burbidge (1987,1991,1993). The correct redshift is given by Ulrich (1981), Falomo et al. (1989), and Stickel et al. (1993a). 0524-460 : The identification and magnitude were taken from Jauncey et al. (1989). The optical spectrum and redshift is given in Stickel et al. (1993a). 0528+134 : The identification and magnitude have been taken from Fugmann & Meisenheimer (1988). The redshift has been derived from spectra taken by one of us (H.K.) with the Steward Observatory 90" telescope and the Multiple Mirror Telescope. The identification and redshift were also given by Stanghellini et al. (1993). 0539-057 : The identification and magnitude were taken from Fugmann & Meisenheimer (1988). The optical spectrum and redshift are given in Stickel & Kuehr (1993b). The incorrect redshift given by Chu et al. (1986) is also listed in the catalogue of Veron-Cetty and Veron (1991). 0602+673 : The identification and optical magnitude have been taken from Meisenheimer & Roeser (1983). 0605-085 : The redshift has also been listed by Allington-Smith et al. (1991) and Stickel et al. (1993a). 0615+820 : The redshift listed by Eckart et al. (1986) is based on spectra taken by one of us (H.K.) with the Steward Observatory 90" telescope and the Multiple Mirror Telescope. 0625-536 : The identification, optical magnitude, and redshift have been taken from Danziger & Goss (1983). The redshift is also given by Tadhunter et al. (1993). 0625-354 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 0646-306 : The unresolved optical counterpart of this radio source is probably variable, since Saikia et al. (1987) find m = 21 mag while Fugmann et al. (1988) give m = 18.6 mag. The lower limit of the optical polarization is based on a measurement with only a single analyzer position angle (see Fugmann & Meisenheimer 1988). 0707+476 : The identification and magnitude were taken from Meisenheimer & Roeser (1983). The redshift has been derived from a spectrum taken by one of us (H.K.) with the Steward Observatory 90" telescope. No entry for the optical polarization is given in Table 2, since the object measured by Wills et al. (1993) is a foreground star (see Meisenheimer & Roeser 1983). 0710+439 : The identification and optical magnitude have been taken from Stanghellini et al. (1993). The redshift is listed in Pearson & Readhead (1988). 0742+103 : The faint identification proposed by Fugmann et al. (1988) has not been detected on R - and I - band CCD images taken with the 2.2m telescope on La Silla, Chile, in March 1985 and the 2.2m telecope on Calar Alto, Spain, in December 1985. The radio source is thus classified as an empty field, which also disagrees with O'Dea et al. (1991). 0743-673 : The redshift of z = 1.511 has been taken from Espey et al. (1989). This value has also been given by Jauncey et al. (1989). The redshift listed by Wall & Peacock (1985), Hewitt & Burbidge (1989), and Veron-Cetty & Veron (1991) is incorrect. 0806-103 : The identification, magnitude, and redshift have been taken from Tabara & Inoue (1980), who refer to Gardner et al. (1969). The redshift has also been listed by Tadhunter et al. (1993). 0820+225 : The emission lines and the absorption line redshift listed in Hewitt & Burbidge (1993) are obviously typographical errors. The optical spectrum and redshift is given in Stickel et al. (1993b) 0825-202 : The identification and magnitude were taken from Bolton & Kinman (1966). The optical spectrum and redshift is given in Stickel et al. (1993a). 0828+493 : The optical spectrum and redshift is given in Stickel et al. (1993b) 0834-196 : The uncertain type and magnitude of the optical counterpart is based on a tentative identification by Fugmann et al. (1988). 0836+710 : The optical spectrum and redshift is given in Stickel & Kuehr (1993a). The redshift has previously been listed by Eckart et al. (1986), based on spectra taken by one of us (H.K.) with the Steward Observatory 90" telescope and the Multiple Mirror Telescope. 0839+187 : The redshifted listed in Veron-Cetty & Veron (1991) is incorrect. 0858-279 : The identification and magnitude were taken from Prestage & Peacock (1983). The optical spectrum and redshift is given in Stickel et al. (1993b). An incorrect redshift has been given by Thompson et al. (1991) and is listed in the catalogues of Veron-Cetty & Veron (1991) and Hewitt & Burbidge (1993). 0859-257 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 0915-118 : The redshift listed in Burbidge & Crowne (1979) is incorrect. 0917+624 : The optical spectrum and the redshift is given in Stickel & Kuehr (1993b). The redshift previously listed by Quirrenbach et al. (1989) and Qian et al. (1991) was derived from a spectrum taken by one of us (H.K.) with the Mount Palomar 5m telescope. 0941-080 : The identification and optical magnitude have been taken from Stanghellini et al. (1993). 0945+664 : The identification and magnitude were taken from Peacock et al. (1981). 0947+145 : The identification, magnitude and redshift have been taken from Spinrad et al. (1985) 1005+077 : The identification, magnitude and redshift have been taken from Spinrad et al. (1985) 1015-314 : The identification and magnitude were taken from Prestage & Peacock (1983). 1031+567 : The identification and optical magnitude have been taken from Stanghellini et al. (1993). The redshift is listed in Dunlop et al. (1989). 1039+029 : McEwan et al. (1975) and Veron & Veron (1977) find an optical blank field at the radio position. 1039+811 : The redshift is derived from spectra taken by one of us (H.K.) with Steward Observatory 90" telescope and has previously been listed by Eckart et al. (1986). 1057-797 : The identification and magnitude have been taken from Jauncey et al. (1989). 1117+146 : The identification and magnitude were taken from Wills et al. (1973). 1143-483 : The identification and magnitude were taken from Hunstead (1971). 1150+812 : The redshift is derived from spectra taken by one of us (H.K.) with Steward Observatory 90" telescope and has previously been listed by Eckart et al. (1986). 1157+732 : The redshift has been taken from McCarthy (1988). 1203+645 : The redshift listed by Herbig & Readhead (1992) is incorrect. 1213-172 : This radio source lies close to the 2.6 mag star gamma Corvus. A direct CCD image taken with the 3.5m telescope on Calar Alto, Spain, in June 1993 shows a m = 21.4 mag resolved galaxy at the radio position. 1216+487 : The optical spectrum and redshift is given in Stickel & Kuehr (1993c). 1221-423 : The identification and magnitude have been taken from Lue (1970). The redshift is given by Simpson et al. (1993). 1245-197 : The identification, magnitude, and redshift were taken from O'Dea et al. (1991). 1246-410 : The identification, magnitude, and redshift have been taken from Burbidge & Burbidge (1972). 1306-095 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 1308-220 : The classification as an optical blank field is due to Torres & Wroblewski (1987). A possible candidate for the optical counterpart has been proposed by Prestage & Peacock (1983). 1313-333 : The redshift is based on two emission lines at lambda = 4232 A and lambda = 6166 A detected by Jauncey et al. (1982) and identified with C III] 1909 and Mg II 2798 at z = 1.210, as described in their notes on individual objects. The incorrect redshift listed in Table II of Jauncey et al. (1982) is obviously a misprint, which also appears in the catalogue of Veron-Cetty & Veron (1991). 1320-446 : The identification and magnitude were taken from Torres & Wroblewski (1986). 1323+321 : The identification and magnitude have been taken from Grueff & Vigotti (1972). The redshift is given in Dunlop et al. (1989). The radio source has also been identified by Stanghellini et al. (1993). 1333-337 : The lobes of the radio source 1333-337 (IC 4296, Killeen et al. 1986), which had previously been listed as the individual sources 1332-33 and 1334-33 (Kuehr et al. 1981a), have been removed from the 1 Jy catalogue. 1334-127 : The uncertain redshift listed in Hewitt & Burbidge (1993) has been confirmed by Stickel et al. (1993a). 1413+349 : The classification as an optical blank field is due Peacock et al. (1981), Meisenheimer & Roeser (1983) and Stanghellini et al. (1993). A possible IR counterpart has been detected by O'Dea et al. (1992b). 1418+546 : The optical spectrum and redshift is given in Stickel et al. (1993b) 1434+036 : The classification as an optical blank field is due to McEwan et al. (1975). 1435+638 : The optical magnitude has been taken from Porcas et al. (1980). 1502+106 : The redshift has been taken from Wright et al. (1979) and Wilkes (1986). The redshift listed in the catalogues of Hewitt & Burbidge (1993) and Veron-Cetty & Veron (1991) is based on a different identification of the spectral features observed by Smith et al. (1977). 1504+377 : The revised classification as a galaxy as well as the optical magnitude and redshift are given in Stickel & Kuehr (1993c). 1518+046 : The identification and magnitude have been taken from Biretta et al. (1985). 1519-273 : The classification as a BL Lac Object as well as the optical spectrum is given by Stickel et al. (1993b) and Veron-Cetty & Veron (1993). 1538+149 : The optical spectrum and redshift is given by Stickel et al. (1993b) 1541-828 : No optical identification has been found in the literature. 1547-795 : The identification and magnitude have been taken from Hunstead (1971) and Shimmins & Bolton (1972). The redshift is given by Tadhunter et al. (1993). 1549-790 : The identification and magnitude were taken from White et al. (1987) and Jauncey et al. (1989). The redshift is given in Veron et al. (1990) and Tadhunter et al. (1993). 1600+335 : Stanghellini et al. (1993) suggested a very faint, possibly extended object as the optical counterpart. A deep R band image taken in June 1993 with the 3.5m telescope on Calar Alto, Spain, confirmed the presence of the optical counterpart and showed it to be a highly elongated or even morphologically disturbed m(R) = 23 mag galaxy. 1602-093 : No optical identification has been found in the literature. 1606+106 : The identification and magnitude have been taken from Bolton et al. (1968). The optical spectrum and redshift is given in Stickel & Kuehr (1993c). A preliminary value for the redshift has been given in Biermann et al. (1987), which was based on spectroscopic observations by one of us (H.K.) with the Steward Observatory 90" telescope. 1607+268 : The identification and magnitude were taken from Biretta et al. (1985). The redshift is listed in Phillips & Shaffer (1983) and O'Dea et al. (1991). The radio source has also been identified by Stanghellini et al. (1993). 1622-297 : The identification and optical magnitude have been taken from Saikia et al. (1987). The redshift has been taken from the PKS catalogue (Wright & Otrupcek 1990). 1622-253 : No optical counterpart has been found by Prestage & Peacock (1983), who marked a nearby object on their finding chart. Saikia et al. (1987) described the field as obscured. A direct CCD image taken with the 2.2m telescope on La Silla, Chile, in March 1985 shows a m = 20.3 mag unresolved object at the radio position given by Prestage & Peacock (1983), which is proposed as the optical counterpart. The optical polarization measured by Impey & Tapia (1990) probably refers to the nearby object of Prestage & Peacock (1983). 1637-771 : The redshift of z = 0.0427 has been taken from Simpson et al. (1993), which is in agreement with the value given by Whiteoak (1972), Burbidge & Burbidge (1972) and Tadhunter et al. (1993). The redshift listed by Danziger & Goss (1983) is incorrect, as has already been noted by Simpson et al. (1993). 1638+124 : The identification and optical magnitude is based on a direct R - band CCD image taken with the 3.5m telescope on Calar Alto, Spain, in June 1991. 1648+015 : The identification and optical magnitude is based on direct R-band CCD images taken with the 3.5m and 2.2m telescopes on Calar Alto, Spain, in June 1992. 1655-776 : The redshift has been taken from Simpson et al. (1993). The redshift listed in Burbidge & Crowne (1979) is incorrect. 1721-026 : The identification of this radio source with m = 15 mag galaxy by Veron (1971) is uncertain (Stickel et al. 1993a). The optical spectrum and redshift of this tentative optical counterpart is given in Stickel et al. (1993a). 1737-608 : The identification and magnitude have been taken from Jones & McAdam (1992). 1740-517 : An uncertain identification with a m = 20.2 mag galaxy has been given by Prestage & Peacock (1983). 1815-553 : The identification and magnitude were taken from White et al. (1991). 1829-718 : No optical identification has been found in the literature. 1829+290 : The identification, the optical magnitude and the redshift is given in Stickel & Kuehr (1993b). The identification and redshift listed by Spencer et al. (1989) is rejected. 1839-486 : The identification and magnitude have been taken from Bajaja (1970). The redshift is given by Tadhunter et al. (1993) and Simpson et al. (1993). 1928+738 : An incorrect redshift is listed in Wall & Peacock (1985). The correct redshift is given in Lawrence et al. (1986) and Stickel et al. (1993a). 1929-397 : The identification and magnitude have been taken from Bolton & Shimmins (1973). The redshift is given by Simpson et al. (1993). 1932-464 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 1936-623 : The identification and magnitude have been taken from White et al. (1991). 1938-155 : The identification and magnitude have been taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). 1954-552 : The identification and optical magnitude have been taken from Whiteoak (1972). The redshift given by Tadhunter et al. (1993) and Simpson et al. (1993) confirm the uncertain value listed by Whiteoak (1972). 2008-068 : The identification and magnitude were taken from Fugmann et al. (1988). The radio source has also been identified by O'Dea et al. (1990) and Stanghellini et al. (1993). 2020-575 : The identification, magnitude, and redshift were taken from Jones & McAdam (1992). 2029+121 : The classification, optical magnitude, and a tentative redshift are given in Stickel & Kuehr (1993a). 2032-350 : The identification and magnitude were taken from Prestage & Peacock (1983). 2052-474 : The identification, magnitude, and redshift were taken from Murdoch et al. (1984). 2053-201 : The identification and magnitude have been taken from Hazard (1972). The optical spectrum and redshift is given in Stickel & Kuehr (1993c). 2104+763 : The identification, optical magnitude, and redshift have been taken from Smith et al. (1976). 2113+293 : The optical magnitude has been taken from Kuehr (1980). The spectrum and redshift is given in Stickel et al. (1993a). 2128+048 : The extremely faint optical counterpart has been found by Biretta et al. (1985). The redshift has been made available to us by H. Spinrad (1993, priv. comm.). 2135-209 : The identification and magnitude were taken from Prestage & Peacock (1983). The redshift is given by Tadhunter et al. (1993). However, the radio source has been classified as an empty field by Saikia et al. (1987). 2140-816 : No optical identification has been found in the literature. 2149-287 : No optical identification has been found in the literature. 2149+056 : The identification and optical magnitude were taken from O'Dea et al. (1991). The optical spectrum and redshift is given in Stickel & Kuehr (1993a). 2150-520 : This radio source has tentatively been identified with a m = 18 mag QSO by Prestage & Peacock (1983). 2150+173 : The identification and magnitude as well as the featureless optical spectrum are given in Stickel et al. (1993a). 2210+016 : This radio source has tentatively been identified with a m = 21.7 mag QSO by Fugmann et al. (1988). 2245-328 : The redshift has been taken from Jauncey et al. (1982) 2250-412 : The identification and optical magnitude have been taken from Hunstead (1971). The redshift is given by Tadhunter et al. (1993). 2252-530 : A faint object near the plate limit has been proposed as the optical counterpart by Lasker & Smith (1974). The galaxy suggested by Lue (1974) has been discarded by Jones & McAdam (1992). 2255+416 : The identification and magnitude were taken from Fugmann & Meisenheimer (1988). The optical spectrum and the redshift is given in Stickel & Kuehr (1993a,c). The spectral features described therein are in contrast to those listed by Xu et al. (1993), who suggested a redshift of z = 1.724. 2311-452 : An incorrect designation and position for this source is listed in Hewitt & Burbidge (1993). 2317-277 : The identification and magnitude were taken from Bolton et al. (1965). 2319+272 : The optical counterpart of this radio source is a quasar at z = 1.253, which lies behind the cluster Abell 2584. A detailed discussion of this remarkable object can be found in Stickel & Kuehr (1992). 2323-407 : The identification and magnitude has been taken from Lue (1970). 2323+435 : The identification and magnitude were taken from Edwards et al. (1975). The optical spectrum and redshift is given in Stickel et al. (1993a). 2324-023 : The identification and magnitude have been taken from Bolton & Ekers (1966). The optical spectrum and redshift is given in Stickel et al. (1993a). 2324+405 : The identification and magnitude were taken from Cohen et al. (1977). The optical spectrum and the redshift is given by Stickel & Kuehr (1993b). 2331-417 : The identification and magnitude have been taken from Savage et al. (1976). 2333-528 : The classification as an empty field is due to Jauncey et al. (1989). The optical identification proposed by Bolton & Savage (1977) and White et al. (1991) has been discarded by Jauncey et al. (1989) on the basis of an accurate VLBI radio position. 2337-334 : A tentative identification with a very faint object of unknown type has been proposed by Torres & Wroblewski (1987). 2351+456 : The optical spectrum and redshift is given by Stickel & Kuehr (1993b). 0114-476 : The radio flux and the radio spectral index have been taken from Saripalli et al. (1986) and Danziger & Goss (1983), respectively. 0319-453 : The radio and optical properties have been taken from Jones (1989). 0344-345 : The radio flux and the radio spectral index (measured between 408 MHz and 5 GHz) have been taken from Wall & Schilizzi (1979). 0511-484 : The radio flux and the radio spectral index (measured between 408 MHz and 5 GHz) have been taken from Wall & Schilizzi (1979). 0744+559 : The radio flux and the radio spectral index have been taken Saripalli et al. (1986) and Willis et al. (1974), respectively. 1331-098 : The radio flux and the radio spectral index (measured between 408 MHz and 5 GHz) have been taken from Wall & Schilizzi (1979). 1448+634 : The radio flux and the radio spectral index have been taken from Condon et al. (1991). 1514+072 : The radio flux and the radio spectral index have been taken from Condon et al. (1991). 1549+202 : The radio flux and the radio spectral index have been taken Saripalli et al. (1986) and Willis & Strom (1978), respectively. 1557+708 : The radio flux and the radio spectral index have been taken from Condon et al. (1991). The redshift is given by Herbig & Readhead (1992) and Stickel et al. (1993a). 1637+826 : The radio flux and the radio spectral index have been taken from Saripalli et al. (1986) and Wagget et al. (1977), respectively. 2212+135 : The radio flux and the radio spectral index have been taken from Condon et al. (1991). --- Francois Ochsenbein CDS 1994Feb17Manfred Stickel J_A+AS_105_211.xml