Gaia-ASAS-SN classical Cepheid sample. I. J/ApJ/914/127 ivo://CDS.VizieR/J/ApJ/914/127 doi:10.26093/cds/vizier.19140127 CDS Inno L. Rix H.-W. Stanek K.Z. Jayasinghe T. Poggio E. Drimmel R.,Rotundi A. 2023-01-24T12:10:28Z 2023-01-09T15:21:28Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr variable-stars milky-way-galaxy visible-astronomy broad-band-photometry We present a well-defined and characterized all-sky sample of classical Cepheids in the Milky Way, obtained by combining two time-domain all-sky surveys: Gaia DR2 (Gaia Col. 2018; see I/345) and All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee+ 2014AAS...22323603S). We first use parallax and variability information from Gaia to select ~30000 bright (G<17) Cepheid candidates with M_K_{<}-1. We then analyze their ASAS-SN V-band light curves, determining periods and classifying the light curves using their Fourier parameters. This results in ~1900 likely Galactic Cepheids, which we estimate to be >~90% complete and pure within our adopted selection criteria. This is the largest all-sky sample of Milky Way Cepheids that has such a well-characterized selection function, needed for population modeling and for systematic spectroscopic follow-up foreseen with Sloan Digital Sky Survey-V. About 130 of these potential Cepheids have not been documented in the literature even as possible candidates. 2021ApJ...914..127I https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/914/127 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/345 : Gaia DR2 (Gaia Collaboration, 2018) II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020) J/A+A/576/A30 : NIR LC templates for classical Cepheids (Inno+, 2015) J/AJ/156/241 : Variable stars measured by ATLAS (Heinze+, 2018) J/AcA/68/315 : OGLE Galactic Cepheids (Udalski+, 2018) J/A+A/622/A60 : Gaia DR2 misclassified RR Lyrae list (Clementini+, 2019) J/ApJ/883/58 : Cepheids from VVV in Gal. midplane (Dekany+, 2019) J/MNRAS/482/3058 : New variable stars towards Galactic Bulge (Kains+, 2019) J/A+A/625/A14 : Reclassification of Cepheids in Gaia DR2 (Ripepi+, 2019) J/other/Sci/365.478 : Milky Way classical Cepheids sample (Skowron+, 2019) J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/914/127 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/914/127 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/914/127 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/914/127 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/914/127 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/914/127 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/914/127/cepheids (Gaia DR2 parameters from our analysis of all Cepheids in the I21 (Table 2) and classification from other catalogs (Table 5)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/914/127/cepheids? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/914/127/cepheids? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/914/127/cepheids? 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J/ApJ/914/127/cepheids Gaia DR2 parameters from our analysis of all Cepheids in the I21 (Table 2) and classification from other catalogs (Table 5) Gaia Gaia DR2 source identifier meta.id;meta.main PT [0.3/64.1] Period from template fitting procedure d time.period float recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Simbad Simbad column added by the CDS meta.ref.url char _RA.icrs Right ascension (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) deg pos.eq.ra nullable indexed _DE.icrs Declination (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) deg pos.eq.dec nullable indexed Mode Pulsation mode ("F"=1269 occurrences; or "1O"=622 occurrences) src.class char PF [0.3/64.1] Period from Lomb-Scargle (LS) method d time.period float N [46/786] Number of observing epochs meta.number int Vmag [7.1/17.3] Mean V band magnitude mag phot.mag;em.opt.V float A1 [0.007/0.6] Amplitude, A_1_ src.var.amplitude float R21 [0.003/0.8] Ratio of 2nd to 1st Fourier amplitudes phot.mag;arith.ratio;stat.Fourier float R31 [0.003/0.5] Ratio of 3rd to 1st Fourier amplitudes phot.mag;arith.ratio;stat.Fourier float phi21 [0.009/6.3] Ratio of 2nd to 1st phase differences time.phase;arith.ratio float phi31 [-6.2/6.3] Ratio of 3rd to 1st phase differences time.phase;arith.ratio float DeltaG [0.06/2.8] Gaia G band variability mag src.var.amplitude;phot.mag;em.opt float Ratio [1.1/1.9] Ratio of Gaia Blue to Red passband variability phot.mag;arith.ratio float RA_ICRS Right Ascension (ICRS) at Epoch=2015.5 deg pos.eq.ra;meta.main DE_ICRS [-78.7/79.6] Declination (ICRS) at Epoch=2015.5 deg pos.eq.dec;meta.main Cont [0/1] Possible contamination flag (1=contaminated) meta.code.class int Lit Source of photometric data (1) meta.bib char ID Stellar identifier from literature meta.id.cross char ModeLit Pulsation mode src.class char Per [0.37/51.42]? Pulsation period d time.period float nullable r_Per Reference for Per (1) meta.bib char ASAS-SN Non classified Cepheid in ASAS-SN name meta.id.cross char PerA [0.35/136.1]? Non classified Cepheid in ASAS-SN period d time.period double nullable f_PerA A Non-periodic flag on PerA meta.code char TypeA Non classified Cepheid in ASAS-SN type src.class char OGLE Non classified Cepheid in OGLE name meta.id.cross char TypeO Non classified Cepheid in OGLE type src.class char ZTF Non classified Cepheid in ZTF name meta.id.cross char TypeZ Non classified Cepheid in ZTF type src.class char GLON Galactic longitude deg pos.galactic.lon GLAT Galactic latitude deg pos.galactic.lat double