J/ApJS/96/605 J/ApJS/96/605 Far UV Stellar Photometry E G Schmidt G R Carruthers Astrophys. J. Suppl. Ser. 96 605 1995 1995ApJS...96..605S Photometry, ultraviolet Stars, early-type stars: early-type surveys techniques: photometric ultraviolet: stars Far-ultraviolet photometry for 741 objects in a field in Sagittarius centered near M8 and 541 objects in a field centered near zeta Scorpii is presented. These data were extracted from electrographic images obtained with two cameras during a shuttle flight in 1991 April/May. The cameras provided band passes with lambda_eff = 1375 A and lambda_eff = 1781 A. Synthetic colors show that these bands are sensitive to effective temperature for hot stars. Our measurements were placed on a quantitative far-ultraviolet magnitude scale by convolving the spectra of stars observed by IUE with our cameras' spectral response functions. Fifty-eight percent of the ultraviolet objects were identified with visible stars using the SIMBAD database while another 40% of the objects are blends of early type stars too close together to separate with our resolution. Our photometry is compared with that from the TD-1, OAO 2, and ANS satellites and the S201 (Apollo 16) far-ultraviolet camera and found to agree at the level of a few tenths of a magnitude. Unlike previous studies, almost half of the identified visual counterparts to the ultraviolet objects are early B stars. A plot of distance modulus against ultraviolet color excess reveals a significant population of stars with strong ultraviolet excesses.

Star Star number --- RAh Right ascension (1950) the printed values are all missing the '1' (e.g. ' 7' instead of '17') h RAm R.A. min RAs R.A. s DE- Declination sign --- DEd Declination (1950) deg DEm Dec. arcmin m1375 Magnitude at 1375 Angstroems mag m1781 Magnitude at 1781 Angstroems mag ID Identification --- Mag V or ptg. magnitude from SIMBAD mag n_Mag 'P' when Mag is photographic --- Sp Spectral type --- CDS 1995Jul12AAS CD-ROM series, Volume 4, 1995 Lee Brotzman [ADS] 08-May-95 UNKNOWN UNKNOWN * 12-Jul-1995: The original tables 4 and 5 where modified at CDS to place the magnitude flag 'P' in a dedicated column. * 05-Nov-1996: The RAh values were discovered to be wrong by 10 hours at CDS; all RAh values were then changed. J_ApJS_96_605.xml