J/ApJ/816/49ivo://CDS.VizieR/J/ApJ/816/49doi:10.26093/cds/vizier.18160049CDSScowcroft V.Freedman W.L.Madore B.F.Monson A.Persson S.E.Rich J.,Seibert M.Rigby J.R.2018-01-04T08:22:44Z2016-04-08T11:27:02ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsinfrared-photometryUsing Spitzer observations of classical Cepheids we have measured the true average distance modulus of the Small Magellanic Cloud (SMC) to be 18.96+/-0.01_stat_+/-0.03_sys_mag (corresponding to 62+/-0.3kpc), which is 0.48+/-0.01mag more distant than the LMC. This is in agreement with previous results from Cepheid observations, as well as with measurements from other indicators such as RR Lyrae stars and the tip of the red giant branch. Utilizing the properties of the mid-infrared Leavitt Law we measured precise distances to individual Cepheids in the SMC, and have confirmed that the galaxy is tilted and elongated such that its eastern side is up to 20kpc closer than its western side. This is in agreement with the results from red clump stars and dynamical simulations of the Magellanic Clouds and Stream.2016ApJ...816...49Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/816/49CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/780/59 : The Araucaria project: EBs in SMC (Graczyk+, 2014)J/MNRAS/420/585 : AKARI observations of SMC Cepheids (Ngeow+, 2012)J/ApJ/759/146 : Spitzer/IRAC photom. for 37 Galactic Cepheids (Monson+, 2012)J/ApJ/743/76 : Spitzer photometry of LMC Cepheids (Scowcroft+, 2011)J/AcA/60/165 : VI light curves of SMC RR Lyrae (Soszynski+, 2010)J/ApJ/715/277 : Insights into the Cepheid distance scale (Bono+, 2010)J/AcA/60/17 : VI light curves of SMC classical Cepheids (Soszynski+, 2010)J/A+A/476/73 : Cepheid Period/Luminosity relation (Fouque+, 2007)J/ApJ/658/345 : CRIc photometry of Magellanic Bridge Fields (Harris, 2007)J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)J/A+A/415/521 : BVRIJK and velocities for MC Cepheids (Storm+, 2004)J/A+A/385/793 : Cepheids in Magellanic Clouds. II. (Antonello+, 2002)J/PASP/111/812 : VRI Phot of Cepheids in the Magellanic Clouds (Barnes+ 1999)J/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999)J/ApJS/117/135 : Photometry of Cepheids in Magellanic Clouds (Moffett+ 1998)J/AcA/48/147 : OGLE SMC BVI photometry (Udalski+ 1998)J/AJ/108/932 : Variable stars in the SMC cluster NGC 330 (Sebo+, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/816/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/816/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/816/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/816/49https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/816/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/816/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/816/49/table2 (Mean-light magnitudes for SMC Cepheids)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/816/49/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/816/49/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/816/49/table2?GETtext/xml+votable180.050000true9.8189708-72.0328750.0055555555555555565/8329 6/32955 33001 33287 33294 33295 33297 33298 33299 33304 33306 33307 33313 333283.9193497546148093e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/816/49?format=asciiInfrareddefaultJ/ApJ/816/49/table1Individual photometric data points for the SMC classical CepheidsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCepheid identifiermeta.id;meta.maincharprimaryMHJD[55434.8/55927.9] Modified Heliocentic Julian Date; JD-2400000.5dtime.epochdouble3.6mag[9.1/14]? Spitzer/IRAC 3.6um band magnitudemagphot.mag;em.IR.3-4umdoublenullablee_3.6mag[0.002/0.9]? The 1{sigma} uncertainty in 3.6magmagstat.errordoublenullable4.5mag[9.1/14]? Spitzer/IRAC 4.5um band magnitudemagphot.mag;em.IR.4-8umdoublenullablee_4.5mag[0.001/1]? The 1{sigma} uncertainty in 4.5magmagstat.errordoublenullableJ/ApJ/816/49/table2Mean-light magnitudes for SMC Cepheidse_4.5mag[0.003/0.04] 4.5mag uncertainty (1)magstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCepheid identifiermeta.id;meta.maincharprimarylogP[0.8/2.4] Log of pulsation perioddtime.periodfloat3.6mag[9.4/13.9] Spitzer/IRAC 3.6um magnitude; in Vega systemmagphot.mag;em.IR.3-4umfloate_3.6mag[0.004/0.04] 3.6mag uncertainty (1)magstat.errorfloat4.5mag[9.3/13.9] Spitzer/IRAC 4.5um magnitude; in Vega systemmagphot.mag;em.IR.4-8umfloatS10Display data within 1" from Soszynski+, 2010, J/AcA/60/17meta.ref.urlintnullableLCSpitzer [3.6] and [4.5] plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main