II/212Aivo://CDS.VizieR/II/212ACDSLanning H.H.2000-11-16T07:43:04Z1999-02-10T17:17:26ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxy-planesmilky-way-galaxyvisible-astronomyWide-band photometrysurveysultraviolet-astronomy195 UV-bright stars have been found on two-color 48-inch Schmidt plates centered on the galactic plane, and on one high-latitude plate. This catalog contains sources with (U-B) in the range U-B=0 to U-B=-1.5. Introduction: The Sandage two-color photographic survey was originally made in support of the UHURU x-ray satellite in order to identify those optical counterparts of the detected x-ray sources found in the galactic plane. During inspection of the plates, however, many UV-bright objects fainter than 10th magnitude were seen in the general field. A larger image in the U filter suggested the possibility of a bluer object as in the case of low-luminosity stars, white dwarfs, novae, CVs, normal early B stars, etc. As these are interesting in themselves, it was decided to publish a catalog for the use of other observers. This multi-color photographic technique has been described, for example, by Haro and Herbig (1955). The survey was concentrated on objects with m(B)~10 or fainter. It employed the Palomar 48-in (Oschin) Schmidt telescope and was centered on the galactic plane with overlapping regions covering the galactic latitudes +- 9 degrees, and extending throughout most of the northern plane (l = 0 deg - 227 deg). Plates were taken by J. Kristian, A.R. Sandage, R.J. Brucato, and Lanning, primarily. The data presented here were found following a careful examination of the plates but it should not be assumed these data represent a complete survey of the fields examined. The categories were roughly calibrated against photoelectric (U-B) measures, but a full scale calibration program, including magnitude effects, etc. was not done. The numerical (U-B) limits of the tables should not therefore be taken precisely. The blue magnitude of the sources in the finding list has been estimated using these photoelectric values as a guide but should be considered accurate to only +- 0.5 mag. due to the difficulty of adjusting to the various plate characteristics. Positions were measured from images retrieved from the Space Telescope Science Institute collection of Guide Star digital plate scans. The accuracy of positions from the Guide Star Catalog images has been estimated to be on the order of 0.2-0.8 arcsec (Russell et al. 1990) Information provided by Bidelman (private communication) resulted in the discovery that 15 positions for objects listed in Paper II were in error. Investigation indicated that an incorrect header was associated with the scan of the Guide Star plate originally archived onto optical disk. The incorrect astrometric solution, based on the use of an incorrect origin point, was subsequently applied in the positional determination when centroiding the object. The average offset for positions in right ascension is 14.17 seconds of time, with no detectable trend in the numbers. The offsets in declination range from +6.56 arcseconds through zero to -6.85 arcseconds as one progresses from west to east across the plate. This is consistent with a rotation being introduced into the bad plate solution. Objects with incorrect positions included Lanning 96, 97, 98, 99, 100, 102, 104, 108, 111, 113, 114, 115, 116, 119, and 122. uv.dat contains the corrected coordinates.1973PASP...85...70Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/II/212ACatalogResearchIsServedByTAP VizieR generic serviceIsPreviousVersionOfII/231IsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/212Ahttps://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/212Ahttp://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/212Ahttps://vizier.cds.unistra.fr/viz-bin/votable?-source=II/212Ahttps://vizier.iucaa.in/viz-bin/votable?-source=II/212Ahttp://vizieridia.saao.ac.za/viz-bin/votable?-source=II/212AGETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/212A/uv (The stars with strong UV images)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/212A/uv?https://vizier.iucaa.in/viz-bin/conesearch/II/212A/uv?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/212A/uv?GETtext/xml+votable180.050000true5.376958368.25436940.0055555555555555565/488 490 731 925 6/1304 1307 1310 1311 1316 1319 1334 1346 1771 1779 1781 1785 1788 1789 1930 1966 2936 2938 2939 2942 2943 2965 2966 2967 2968 2970 2973 2974 2993 2997 3008 3009 3011 3016 3018 3019 3020 3021 3023 3025 3026 3027 3028 3032 3033 3041 3069 3071 3095 3124 3126 3139 3142 3145 3149 3152 3153 3157 3160 3162 3163 3165 3169 3170 3173 3175 3182 3184 3189 3194 3196 3198 3199 3264 3265 3266 3268 3270 3271 3273 3275 3276 3277 3278 3283 3287 3288 3289 3291 3296 3297 3301 3303 3305 3308 3309 3311 3312 3320 3322 3324 3325 3327 3328 3329 3330 3332 3336 3342 3344 3352 3353 3360 3365 3368 3369 3370 3374 3375 3457 3459 3647 3650 3652 3655 3662 3663 3664 3676 3678 3684 3686 3688 3690 3693 3694 3696 3699 3705 3707 3768 3775 3777 3779 3782 3787 3789 3800 3843 3849 9486 9512 9513 12847 12859 12928 12931 12936 12945 12953 12961 12964 12968 12987 14263 14333 14367 14415 14714 14718 14719 14791 14801 14804 14805 14809 14810 14811 14814 14833 15389 15392 15394 15400 15404 15409 15411 15412 15414 15416 15434 15462 15470 15474 15493 15506 15507 15511 15516 15518 15552 15553 15700 15708 15710 15733 15739 15825 15828 22069 22165 22210 22215 22224 23767 23797 23939 23942 23943 23946 23950 23982 24373 24381 24383 24393 29108 29116 30211 30336 30406https://cdsarc.cds.unistra.fr/viz-bin/moc/II/212A?format=asciiUVdefaultII/212A/uvThe stars with strong UV imagesID[1,351]+ Lanning numbermeta.id;meta.mainintprimaryindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrem"*" indicates a note in notes.datmeta.notecharRAJ2000Hours of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degrees of declination (J2000)pos.eq.dec;meta.mainBmag? Approximate blue magnitudemagphot.mag;em.opt.Bfloatnullableu_Bmag: indicates B is uncertainmeta.code.errorcharU-B? Approximate U-Bmagphot.color;em.opt.U;em.opt.Bfloatnullableu_U-B: indicates U-B is uncertainmeta.code.errorcharII/212A/notesNotes on individual starsTextText of Notemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1,351]+= Lanning numbermeta.id;meta.mainint