2080 II/80 Homogeneous Photometry Bright Stars on DDO System R D McClure W T Forrester Publ. Dominion Astrophys. Obs. 15 439 1981 1981PDAO...15...14M Photometry, DDO Stars, bright The catalogue of homogeneous photometry of bright stars on the DDO (System McClure and Forrester 1981) is a compilation of DDO photometry of 2196 bright G and K stars prepared from observations made at Kitt Peak National and Cerro Tololo Inter-American Observatories over the last several years using filter sets well matched to the standard system. The catalogue includes a large number of DDO stars whose data have been taken directly from the standard-star paper of McClure (1976), plus a representative sample of stars selected from the Catalogue of Bright Stars (Hoffleit 1964) and the Catalogue of High-Velocity Stars (Eggen 1964) to have good velocities, spectral types and freedom from companion contamination. The catalogue contains HD Catalogue numbers, DM identifications; and the standard photometric indices of the DDO system: magnitude at 4800 angstroms, and the color indices c(45-48), c(42-45), c(41-42), c(38-41), and c(35-38). The number of observations from which each index was determined is also given, along with standard errors.

cat Henry Draper (HD) Catalogue number (blank for five stars not in the HD) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- flag1 HD Code (1 = A component; 9 if HD and HD+1 included in observation, e.g. 179957/8; 0 otherwise) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- DM Durchmusterung catalog (DM) identification BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- sign Sign of DM zone number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- DMzon DM zone number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- DMnum DM number number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- m48 48 filter magnitude m48 number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_m48 Standard error sigma/sqrt(N) of m48 blank = no mean error given because of only a single observation, standard star, or error > 0.099 mag f_m48 Asterisk if error in m48 > 0.099 magnitude number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- C(45-48) Color-index C(45-48) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_C(45-48) Standard error of C(45-48) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mmag C(42-45) Color index C(42-45) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_C(42-45) Standard error of C(42-45). See bytes 34-35. number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag C(41-42) Color index C(41-42) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_C(41-42) Standard error of C(41-42). See bytes 34-35. number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag C(38-41) Color index C(38-41) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_C(38-41) Standard error of C(38-41). See bytes 25-26. number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag f_C(38-41) Asterisk if error in C(38-41) > 0.099 number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- C(35-38) Color index C(35-38) number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag e_C(35-38) Standard error of C(35-38). See bytes 25-26. number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star mag f_C(35-38) Asterisk if error in C(35-38) > 0.099 number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- Nobs Number of observations Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- f_Nobs Note on Nobs * = Nobs is blank because number of observations is > 9 S = Standard star number= BD = Bonner Durchmusterung CD = Cordoba Durchmusterung CP = Cape Photographic Duchmusterung number= blank = no mean error given because of only a single observation, standard star, or error > 0.099 number= Array of 6 digits giving numbers of observations, Nobs, contributing to the magnitude and colors, respectively. Fields are all blanks for standard stars where data are taken directly from McClure (1976), and in cases where all Nobs > 9 (see byte 79). number= * = Nobs is blank because number of observations is > 9 S = Standard star --- M.C. Larkin SSDOO/ADC C.-H. Joseph Lyu Hughes STX/NASA 1995May10 UNKNOWN UNKNOWN The catalogue was received on magnetic tape from Dr. Robert D. McClure of the Dominion Astrophysical Observatory on 5 January 1982. The following modifications to the original format were made in order to make the data easier to process by the general user while still retaining all information and coding in the original data set: 1. All records were condensed by eliminating unused bytes between the data fields in order to make room for the addition of Durchmusterung (DM) numbers for the HD stars. 2. DM numbers were inserted into the records by retrieving them from an updated and corrected version of the SAO-HD-DM-GC Cross Index (Warren and Roman 1981) which had been sorted by HD number. Eleven stars not in the cross index (non-SAO stars) were looked up manually using the HD catalogue and inserted. 3. Multiple HD numbers, e.g. HD 110379/80 were replaced by the lower number alone followed by a 9 to indicate that the data are for HD and HD + 1, i.e. the standard codes adopted by the Centre de Donnees Stellaires, Strasbourg, were added to all HD numbers (see description for byte 7). 4. Asterisks in the standard error fields of m48, C(38-41) and C(35-38), used to indicate errors > 0.099 mag, were moved to the flag bytes 27, 63 and 72 and those standard error fields were blanked out to allow the fields to be read with real format specifications. 5. Asterisks in the numbers of observations (Nobs) fields were converted to blanks and a single asterisk moved to byte 79 for the same reason as above. Also, the abbreviation "STD" in the Nobs fields was changed to blanks and the character "S" placed into byte 79 to flag standard stars. 6. Plus signs were added to all positive color-index data, always in the byte immediately preceding each datum. II_80.xml