J/AJ/167/247ivo://CDS.VizieR/J/AJ/167/247doi:10.26093/cds/vizier.51670247CDSBhardwaj A.Rejkuba M.Ngeow C.-C.Marconi M.Ripepi V.,Samantaray A.S.Singh H.P.2024-11-06T20:20:12Z2024-06-28T07:16:55ZCDS support team

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

cds-question@unistra.frdwarf-galaxiesinfrared-photometryvariable-starsThe Draco Dwarf spheroidal (dSph) galaxy is one of the nearest and the most dark-matter-dominated satellites of the Milky Way. We obtained multiepoch near-infrared (NIR, JHKs) observations of the central region of Draco dSph covering a sky area of ~21x21' using the WIRCam instrument at the 3.6m Canada-France-Hawaii Telescope. Homogeneous JHKs time-series photometry for 212 RR Lyrae (173 fundamental-mode, 24 first-overtone, and 15 mixed-mode variables) and five Anomalous Cepheids in Draco dSph are presented and used to derive their period-luminosity relations at NIR wavelengths for the first- time. The small scatter of ~0.05mag in these empirical relations for RR Lyrae stars is consistent with those in globular clusters and suggests a very small metallicity spread, up to ~0.2dex, among these centrally located variables. Based on empirically calibrated NIR period-luminosity-metallicity relations for RR Lyrae in globular clusters, we determined a distance modulus to Draco dSph of {mu}RRL=19.557{+/-}0.026mag. The calibrated Ks-band period-luminosity relations for Anomalous Cepheids in the Draco dSph and the Large Magellanic Cloud exhibit statistically consistent slopes but systematically different zero points, hinting at possible metallicity dependence of ~-0.3mag/dex. Finally, the apparent magnitudes of the tip of the red-giant branch in I and J bands also agree well with their absolute calibrations with the adopted RR Lyrae distance to Draco. Our recommended ~1.5% precise RR Lyrae distance, DDraco=81.55{+/-}0.98(statistical){+/-}1.17(systematic)kpc, is the most accurate and precise distance to Draco dSph galaxy.2024AJ....167..247Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/247CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/AJ/124/3222 : VI photometry of Draco and UMi galaxies (Bellazzini+, 2002)J/AJ/127/861 : RR Lyrae in Draco dSph (Bonanos+, 2004)J/A+A/421/937 : Metal abundances of LMC RR Lyrae (Gratton+, 2004)J/A+A/442/165 : IJKs photom of late-type stars in Draco dSph (Cioni+, 2005)J/MNRAS/375/831 : Draco MegaCam, INT and HST photometry (Segall+, 2007)J/AJ/136/1921 : Variable stars of Draco dSph (Kinemuchi+, 2008)J/A+A/502/505 : Ks photometry of LMC RR Lyrae (Borissova+, 2009)J/AJ/144/4 : Prop of dwarf galaxies in Local Group (McConnachie+, 2012)J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)J/MNRAS/437/2307 : LMC anomalous Cepheid Ks light curves (Ripepi+, 2014)J/MNRAS/448/2717 : Bayesian analysis resolved stellar spectra (Walker+, 2015)J/AJ/153/204 : RR Lyrae stars from the PS1 3{pi} survey (Sesar+, 2017)J/A+A/625/A1 : RR Lyrae variables NIR light-curve templates (Braga+, 2019)J/AJ/160/220 : NIR light curve 234 RR Lyrae in Messier 3 (Bhardwaj+, 2020)J/A+A/633/A36 : 3D kinematics in the Draco dwarf spheroidal (Massari+, 2020)J/MNRAS/499/4040 : RR Lyrae population in Draco dwarf galaxy (Muraveva+, 2020)J/ApJ/922/20 : CFHT optical & NIR obs. of RR Lyrae in M15 (Bhardwaj+, 2021)J/ApJS/253/42 : The Araucaria Project; deep NIR phot. I. (Karczmarek+, 2021)J/A+A/664/A109 : Gaia EDR3 and Johnson-Kron-Cousins stds (Pancino+, 2022)J/A+A/681/A65 : Cepheids PL relation metallicity dependence (Trentin+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/167/247https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/167/247http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/167/247https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/167/247https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/167/247http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/167/247GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/167/247/table2 (NIR pulsation properties of variable stars in Draco dSph)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/167/247/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/167/247/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/167/247/table2?GETtext/xml+votable180.050000true259.9412080658.088528060.0055555555555555566/10183https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/167/247?format=asciiInfrareddefaultJ/AJ/167/247/table2NIR pulsation properties of variable stars in Draco dSphSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGaia DR3 source IDmeta.id;meta.mainRAJ2000[259/261] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[57/59] Declination (J2000)degpos.eq.dec;meta.mainPer[0.3/1.6] Pulsation perioddtime.perioddoubleTypeVariable type (1)src.classcharJmag[17.1/19.8] Mean apparent J magnitudemagphot.mag;em.IR.JfloatHmag[16.8/19.5] Mean apparent H magnitudemagphot.mag;em.IR.HfloatKsmag[16.8/19.5] Mean apparent Ks magnitudemagphot.mag;em.IR.Kfloate_Jmag[0.01/0.08] Uncertainty in Jmagmagstat.error;phot.magfloate_Hmag[0.01/0.2] Uncertainty in Hmagmagstat.error;phot.magfloate_Ksmag[0.01/0.08] Uncertainty in Ksmagmagstat.error;phot.magfloat