J/AJ/125/1298ivo://CDS.VizieR/J/AJ/125/1298doi:10.26093/cds/vizier.51251298CDSBattinelli P.Demers S.Letarte B.2023-04-06T16:50:53Z2003-08-22T13:30:55ZCDS support team

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

cds-question@unistra.frcarbon-starsinfrared-photometryvisible-astronomybroad-band-photometryWe employ the CFH12K mosaic to identify carbon stars, using the R, I, CN, and TiO photometric technique, in a 2240 arcmin2 area, ranging from 17 to 30kpc of the southwest disk of M31, barely reaching the edge of the observed H I disk. We found 945 C stars with <I_0_>=19.94mag and {sigma}=0.47. The surface density of C stars along the major axis of M31 follows an exponential profile with a scale length of 4.85+/-0.35kpc, in agreement with adopted values for the scale length of the disk population. Our survey partially overlaps with the recently discovered G1 density enhancement by Ferguson et al. We confirm that no AGB star excess is detectable in the surveyed part of the clump. The C/M ratio, along the major axis, is derived over a distance range of 7kpc. The strong C/M gradient seen contrasts with results of previous studies of the C stars in M31.2003AJ....125.1298Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/125/1298CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/119/2780 : C star in 1613 (Albert+, 2003)J/AJ/120/1801 : C stars in Pegasus, DDO 210 and Tucana (Battinelli+, 2000)J/AJ/123/832 : C star population in NGC 6822 (Letarte+, 2002)J/A+A/410/795 : Photometry of NGC 3109 carbon stars (Demers+, 2003)J/AJ/125/3037 : RI photometry of NGC 205 carbon stars (Demers+, 2003)J/A+A/416/111 : C stars in Wolf-Lundmark-Melotte galaxy (Battinelli+, 2004)J/A+A/417/479 : RI photometry of NGC 185 carbon stars (Battinelli+, 2004)J/A+A/418/33 : RI photometry of C stars in NGC 147 (Battinelli+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/125/1298https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/125/1298http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/125/1298https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/125/1298https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/125/1298http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/125/1298GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/125/1298/table3 (Carbon stars in SW1 and SW2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/125/1298/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/125/1298/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/125/1298/table3?GETtext/xml+votable180.050000true9.116791740.02022220.0055555555555555566/2705https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/125/1298?format=asciiOpticalInfrareddefaultJ/AJ/125/1298/table3Carbon stars in SW1 and SW2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[BDL2003]Sequential numbermeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainImagMould I magnitudemagphot.mag;em.opt.Ifloate_Imagrms uncertainty on Imagmagstat.errorfloatR-IMould R-I colour indexmagphot.color;em.opt.R;em.opt.Ifloate_R-Irms uncertainty on R-Imagstat.errorfloatCN-TiOCN-TiO indexmagphot.colorfloate_CN-TiOrms uncertainty on CN-TiOmagstat.errorfloat