J/AJ/162/92ivo://CDS.VizieR/J/AJ/162/92doi:10.26093/cds/vizier.51620092CDSEvans N.R.Pillitteri I.Kervella P.Engle S.Guinan E.Gunther H.M.,Wolk S.Neilson H.Marengo M.Matthews L.D.Moschou S.Drake J.J.,Guzik J.A.Gallenne A.Merand A.Hocde V.2022-03-14T07:02:20Z2021-12-09T07:37:53ZCDS support team

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

cds-question@unistra.frvariable-starsgiant-starsx-ray-sourcesastrometryinfrared-photometryvisible-astronomyphotometryX-ray bursts have recently been discovered in the Cepheids {delta}Cep and {beta}Dor modulated by the pulsation cycle. We have obtained an observation of the Cepheid {eta}Aql with the XMM-Newton satellite at the phase of maximum radius; the phase at which there is a burst of X-rays in {delta}Cep. No X-rays were seen from the Cepheid {eta}Aql at this phase, and the implications for Cepheid upper atmospheres are discussed. We have also used the combination of X-ray sources, as well as Gaia and 2MASS data, to search for a possible grouping around the young intermediate mass Cepheid. No indication of such a group was found.2021AJ....162...92Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/92CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/145/143 : XMM observations of {alpha} Per (Pillitteri+, 2013)J/MNRAS/434/2238 : Cepheids in open clusters (Anderson+, 2013)J/A+A/584/A80 : Pulsation model data for delta Cep and eta Aql (Merand+, 2015)J/ApJ/813/29 : Classical and type II Cepheids IR excesses (Schmidt, 2015)J/MNRAS/459/1170 : Coulour-Period relation for Cepheids (Scowcroft+, 2016)J/A+A/623/A117 : Galactic Cepheids & RR Lyrae multiplicity II (Kervella+, 2019)J/A+A/635/A33 : Galactic classical Cepheids Per-Lbol-Rad (Groenewegen, 2020)J/AJ/159/121 : V-band light curve & RVs of the Cepheid V473Lyr (Evans+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/92https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/92/table1 (XMM-Newton sources in the image around {eta}Aql)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/92/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/92/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/92/table1?GETtext/xml+votable180.050000true298.135590.777630.005555555555555556Cone search capability for table J/AJ/162/92/table3 (2MASS counterparts to XMM-Newton sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/92/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/92/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/92/table3?GETtext/xml+votable180.050000true298.233306940.868616940.005555555555555556Cone search capability for table J/AJ/162/92/table4 (Gaia counterparts to XMM-Newton sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/92/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/92/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/92/table4?GETtext/xml+votable180.050000true298.175758922260.819159653450.0055555555555555565/7532 6/8.650015785639275e-20 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/92?format=asciiX-rayOpticalInfrareddefaultJ/AJ/162/92/table1XMM-Newton sources in the image around {eta}AqlrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/126] XMM/Newton Sequential source identifiermeta.id;meta.mainintprimaryRAJ2000[297/299] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[0.76/1.24] Declination (J2000)degpos.eq.dec;meta.mainPosErr[1/8.1] Positional uncertaintyarcsecstat.error;posfloatOffaxis[0.69/15.8] Arcminutes off-axisarcmininstr.offsetfloatsigmabkg[4.8/3153] Significance, {sigma}_bkg_stat.fit.goodnessfloatRate[0.15/58000] Ratect/ksphot.count;em.X-raydoublee_Rate[0.03/38000] Uncertainty in Ratect/ksstat.errordoubleTexp[16.8/207] Exposure timekstime.duration;obs.exposurefloat2MASS>1 indicates one or many 2MASS counterparts (table3)meta.numberintnullableGaia>1 indicates one or many Gaia counterparts (table4)meta.numberintnullableJ/AJ/162/92/table32MASS counterparts to XMM-Newton sourcesDEJ2000[0.86/1.24] Declination (J2000)degpos.eq.dec;meta.main2MASS2MASS identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[11/125] XMM/Newton Sequential source identifiermeta.id;meta.numberintRAJ2000[297/299] Right Ascension (J2000)degpos.eq.ra;meta.mainJmag[7.35/16.8] 2MASS J-band magnitudemagphot.mag;em.IR.Jfloate_Jmag[0.02/0.2]? Uncertainty in Jmagmagstat.error;phot.magfloatnullableHmag[6.86/16.2] 2MASS H-band magnitudemagphot.mag;em.IR.Hfloate_Hmag[0.02/0.3] Uncertainty in Hmagmagstat.error;phot.magfloatKsmag[6.67/15.9] 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloate_Ksmag[0.01/0.3]? Uncertainty in Ksmagmagstat.error;phot.magfloatnullableQual2MASS Quality flagmeta.code.qualcharSep[0.06/4.57] Separationarcsecpos.angDistance;src.orbitalfloatJ/AJ/162/92/table4Gaia counterparts to XMM-Newton sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[297/299] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[0.76/1.22] Declination (J2000)degpos.eq.dec;meta.mainSep[0.04/1] Separation, XMM to Gaia sourcearcsecpos.angDistance;src.orbitalfloatGaiaGaia DR2 object identifiermeta.id;meta.mainSeq[4/126] XMM/Newton Sequential source identifiermeta.id;meta.numberintplx[-2.14/10.8] Gaia DR2 Parallaxmaspos.parallax.trigfloate_plx[0.02/1.7] Uncertainty in Parmasstat.error;pos.parallaxfloatGmag[13/20.9] Gaia DR2 G-band magnitudemagphot.mag;em.opt.Vfloate_Gmag[0.0007/0.02] Uncertainty in Gmagmagstat.error;phot.magfloatBPmag[13.5/21.3]? Gaia DR2 BP-band magnitudemagphot.mag;em.opt.Bfloatnullablee_BPmag[0.005/0.3]? Uncertainty in BPmagmagstat.error;phot.magfloatnullableRPmag[12/20.4]? Gaia DR2 RP-band magnitudemagphot.mag;em.opt.Rfloatnullablee_RPmag[0.001/0.2]? Uncertainty in RPmagmagstat.error;phot.magfloatnullable