J/ApJS/247/47ivo://CDS.VizieR/J/ApJS/247/47doi:10.26093/cds/vizier.22470047CDSLeahy D.A.Postma J.Chen Y.Buick M.2021-09-07T07:01:49Z2020-07-17T13:02:43ZCDS support team

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

cds-question@unistra.frgalaxiesultraviolet-photometryAn ultraviolet survey of M31 has been carried out during 2017-19 with the UltraViolet Imaging Telescope (UVIT) instrument on board the AstroSat Observatory. Here we analyze far- and near-ultraviolet (FUV and NUV) observations from the M31 UVIT survey, which covers a sky area of ~3{deg}x1{deg} with spatial resolution of ~1". The observations included six filter bands in the wavelength range of 120-280nm. The limiting magnitude (AB) in the FUV band (CaF2 filter), which has the largest number of detected sources, is ~23. The primary product of this work is the M31 UVIT point-source catalog containing positions and photometry. In total ~75000 sources were detected at FUV or NUV wavelengths.2020ApJS..247...47Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/247/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/459/321 : BV photometry of M31 eclipsing binaries (Vilardell+, 2006)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/AJ/133/2393 : UBVRI phot. in 7 dwarfs galaxies, M31 and M33 (Massey+, 2007)J/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)J/ApJ/703/614 : UV star-forming regions in M31 (Kang+, 2009)J/AJ/144/142 : HST photometry of young stellar pop. in M31 (Bianchi+, 2012)J/ApJS/199/37 : GALEX catalog of star clusters in M31 (Kang+, 2012)J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)J/AJ/152/62 : Revised LGGS UBVRI phot. of M31 and M33 stars (Massey+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/247/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/247/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/247/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/247/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/247/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/247/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/247/47/table5 (The AstroSat UVIT M31 point source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/247/47/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/247/47/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/247/47/table5?GETtext/xml+votable180.050000true10.014240.43230.005555555555555556Cone search capability for table J/ApJS/247/47/table6 (The AstroSat UVIT M31 filter-matched catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/247/47/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/247/47/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/247/47/table6?GETtext/xml+votable180.050000true11.44942.22310.005555555555555556Cone search capability for table J/ApJS/247/47/table1 (M31 AstroSat/UVIT observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/247/47/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/247/47/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/247/47/table1?GETtext/xml+votable180.050000true10.7107141.250230.0055555555555555566/2619 2622 2623 2666 2667 2705 2708 2709 2752https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/247/47?format=asciiUVdefaultJ/ApJS/247/47/table5The AstroSat UVIT M31 point source catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFilterFilter identifiermeta.id;instr.filtercharRAJ2000[9.19/12.3] Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[40/42.6] Declination (J2000)degpos.eq.dec;meta.mainindexedABmag[12.8/27.2] Apparent AB magnitude in Filtermagphot.mag;em.UVfloatmag[11.3/25.5] Apparent Vega magnitude in Filtermagphot.mag;em.UVfloatErrmag[0.02/11.1] Magnitude uncertaintymagstat.errorfloatFieldField number(s)meta.id;obs.fieldcharM31CatDisplay data from Massey+, 2006, J/AJ/131/2478 ; 2007, J/AJ/133/2393 and 2016, J/AJ/152/62 within 1"meta.ref.urlintnullableJ/ApJS/247/47/table6The AstroSat UVIT M31 filter-matched catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFilt1First filter in the pairmeta.code;instr.filtercharFilt2Second filter in the pairmeta.code;instr.filtercharRAJ2000[9.19/12.3] First filter Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[40/42.6] First filter Declination (J2000)degpos.eq.dec;meta.mainindexedABmag1[12.8/25] Apparent AB magnitude in first filtermagphot.mag;em.UVfloatmag1[11.3/22.6] Apparent Vega magnitude in first filtermagphot.mag;em.UVfloatErrmag1[0.02/1.7] Magnitude uncertainty in first filtermagstat.errorfloatField1Field number(s) of first filtermeta.id;obs.fieldcharRA2deg[9.19/12.3] Second filter Right Ascension (J2000)degpos.eq.ra;instr.filterDE2deg[40/42.6] Second filter Declination (J2000)degpos.eq.dec;instr.filterABmag2[12.8/24.2] Apparent AB magnitude in 2nd filtermagphot.mag;em.UVfloatmag2[11.3/25.6] Apparent Vega magnitude in second filtermagphot.mag;em.UVfloatErrmag2[0.02/1.1] Magnitude uncertainty in second filtermagstat.errorfloatField2Field number(s) of second filtermeta.id;obs.fieldcharSep[0/1.8] Separation between Filter coordinatesarcsecpos.angDistancefloatJ/ApJS/247/47/table1M31 AstroSat/UVIT observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintField[1/19] Field numbermeta.id;obs.fieldintprimaryRAJ2000? Right ascension (J2000) (1)degpos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000) (1)degpos.eq.dec;meta.mainnullableFilt? Filters (2)meta.code;instr.filtercharExp? Exposure times for each filterstime.expocharBJD0[2457672/2458448]? Solar system Barycentric Julian Date of the start of the observation (Common integer part to each filter)dtime.epochintnullableOffTime? Fractional part of the observation start for each filterdtime.epochchar