J/ApJ/894/135ivo://CDS.VizieR/J/ApJ/894/135doi:10.26093/cds/vizier.18940135CDSSaremi E.Javadi A.Van Loon J.T.Khosroshahi H.Molaeinezhad A.,McDonald I.Raouf M.Danesh A.Bamber J.R.Short P.Suarez-Andres L.,Clavero R.Gozaliasl G.2022-09-21T08:29:38Z2021-10-22T12:09:50ZCDS support team

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

cds-question@unistra.frgalaxiesglobular-star-clustersinfrared-photometryvisible-astronomyphotometrysurveysmetallicityabsolute-magnitudeAn optical monitoring survey in nearby dwarf galaxies was carried out with the 2.5m Isaac Newton Telescope. Fifty-five dwarf galaxies and four isolated globular clusters in the Local Group were observed with the Wide Field Camera. The main aims of this survey are to identify the most evolved asymptotic giant branch (AGB) stars and red supergiants at the end-point of their evolution based on their pulsational instability, use their distribution over luminosity to reconstruct the star formation history, quantify the dust production and mass loss from modeling the multiwavelength spectral energy distributions (SEDs), and relate this to luminosity and radius variations. In this first of a series of papers, we present the methodology of the variability survey and describe the photometric catalog of the Andromeda I (And I) dwarf galaxy as an example of the survey, and we discuss the identified long period variable (LPV) stars. We detected 5581 stars and identified 59 LPV candidates within two half-light radii of the center of And I. The amplitudes of these candidates range from 0.2 to 3mag in the i-band. Seventy-five percent of detected sources and 98% of LPV candidates are detected at mid-infrared wavelengths. We show evidence for the presence of dust-producing AGB stars in this galaxy including five extreme AGB (x-AGB) stars, and we model some of their SEDs. A distance modulus of 24.41mag for And I was determined based on the tip of the red giant branch. Also, a half-light radius of 3.2'+/-0.3' was calculated.2020ApJ...894..135Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/894/135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)VII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/AJ/126/2840 : BVI CCD photometry of Sextans dSph galaxy (Lee+, 2003)J/ApJ/697/1993 : Spitzer study of AGB stars. III. (Boyer+, 2009)J/MNRAS/411/263 : JHK variable stars in M33 (Javadi+ 2011)J/ApJ/758/11 : Bayesian distances to M31 satellites (Conn+, 2012)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/753/71 : Mass-loss return from LMC evolved stars. VI. (Riebel+, 2012)J/ApJ/754/35 : Red supergiant stars in the SMC. II. (Yang+, 2012)J/AJ/145/22 : Simultaneous SiO and H2O maser observations (Kim+, 2013)J/ApJS/216/10 : DUSTiNGS. I. The Good Source Catalog (Boyer+, 2015)J/ApJ/800/51 : DUSTiNGS II. Metal-poor dusty AGB stars (Boyer+, 2015)J/ApJ/812/158 : Leo P RR Lyrae candidates & cumulative SFH (McQuinn+, 2015)J/ApJ/833/167 : PAndAS view of Andromeda satellites. II. (Martin+, 2016)J/ApJ/850/137 : ISLAndS project. III. Var. stars (Martinez-Vazquez+, 2017)J/AJ/156/112 : NIR Mira period-luminosity relations in M33 (Yuan+, 2018)J/ApJ/877/49 : DUSTiNGS. V. 3.6 and 4.5um light curves (Goldman+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/894/135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/894/135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/894/135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/894/135https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/894/135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/894/135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/894/135/table1 (Observational properties of targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/894/135/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/894/135/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/894/135/table1?GETtext/xml+votable180.050000true11.41583338.0411110.0055555555555555566/619 2110 2216 2234 2272 2565 2572-2573 2604 2611 2622 2628 2668 2676 2709 2746 2755 2852 3042 4410 4419 4433 5287 5939 6021 6389 7265 7416 8745 10183 10308 10444 10769 11691 12687 13655 14149 17165 17229 18926 19833 19990 20262 20437 20440 26487 26858 26980 27000 27207 27237 27351 27580 28136 28361 28577 29699 31692 48942https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/894/135?format=asciiOpticalInfrareddefaultJ/ApJ/894/135/table1Observational properties of targetsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetType of target (1)src.classcharNameName of the sourcemeta.id;meta.maincharprimaryNobsNumber of observations for this target (link to Table 2)meta.numberintnullableRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVMag[-16.5/-0] Absolute V-band magnitudemagphot.magfloate_VMag[0.1/1.3]? VMag (lower) uncertaintymagstat.error;phot.magfloatnullableE_VMag[0.17/1.1]? VMag upper uncertaintymagstat.error;stat.maxfloatnullablerh[0.4/16]? Calculated half-light radius r_h_ (2)phys.size.radius;meta.modelledfloatnullablee_rh[0.03/1.7]? Rh (lower) uncertaintystat.errorfloatnullableE_rh[0.14/1.8]? Rh upper uncertaintystat.error;stat.maxfloatnullableell[0/0.8]? Ellipticity 1-b/a where b is the semiminor axis and a is the semimajor axissrc.ellipticityfloatnullablee_ell[0.01/0.21]? Ell uncertaintystat.errorfloatnullablem-M[16.1/26.19] Calculated distance modulusmagphot.mag.distModfloate_m-M[0.03/0.5]? m-M (lower) uncertaintymagstat.errorfloatnullableE_m-M[0.07/0.74]? m-M upper uncertaintymagstat.error;stat.maxfloatnullableMass[0.00034/330]? MasssolMassphys.massdoublenullable[Fe/H][-2.72/-0.25] MetallicitySunphys.abund.Zfloate_[Fe/H][0.01/0.4]? [Fe/H] (lower) uncertaintySunstat.error;phys.abund.FefloatnullableE_[Fe/H][0.1/0.1]? [Fe/H] upper uncertaintySunstat.error;stat.maxfloatnullableTypeSource type (3)src.classcharB15Display data from Boyer+, 2015, J/ApJS/216/10meta.ref.urlintnullableNEDNED column added by the CDSmeta.ref.urlcharJ/ApJ/894/135/table2Log of WFC observations of each fieldsAir[1/2.83] Airmassobs.airMassfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy identifiermeta.id;meta.maincharObs[2015/2018] Year of the observationtime.epochEpochEpochtime.epochintFiltFilter used (V, I or i)instr.setup;instr.filtercharExp[15/3180] Exposure timestime.duration;obs.exposureintSeeing[0.76/4] Seeingarcsecinstr.obsty.seeingfloat