J/MNRAS/453/133ivo://CDS.VizieR/J/MNRAS/453/133doi:10.26093/cds/vizier.74530133CDSGezer I.Van Winckel H.Bozkurt Z.De Smedt K.Kamath D.Hillen M.,Manick R.2024-08-15T20:15:03Z2015-08-27T12:48:43ZCDS support team

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

cds-question@unistra.frvariable-starspopulation-ii-starsinfrared-photometryWe present a detailed study based on infrared (IR) photometry of all Galactic RV Tauri stars from the General Catalogue of Variable Stars (GCVS). RV Tauri stars are the brightest among the Population II Cepheids. They are thought to evolve away from the asymptotic giant branch (AGB) towards the white dwarf domain. IRAS detected several RV Tauri stars because of their large IR excesses and it was found that they occupy a specific region in the [12]-[25], [25]-[60] IRAS two-colour diagram. We used the all sky survey of Wide-field Infrared Survey Explorer to extend these studies and compare the IR properties of all RV Tauri stars in the GCVS with a selected sample of post-AGB objects with the goal to place the RV Tauri pulsators in the context of post-AGB evolution. Moreover, we correlated the IR properties of both the RV Tauri stars and the comparison sample with other observables like binarity and the presence of a photospheric chemical anomaly called depletion. We find that Galactic RV Tauri stars display a range of IR properties and we differentiate between disc sources, objects with no IR excess and objects for which the spectral energy distribution (SED) is uncertain. We obtain a clear correlation between disc sources and binarity. RV Tauri stars with a variable mean magnitude are exclusively found among the disc sources. We also find evidence for disc evolution among the binaries. Furthermore our studies show that the presence of a disc seems to be a necessary but not sufficient condition for the depletion process to become efficient.2015MNRAS.453..133Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/453/133CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)II/328 : AllWISE Data Release (Cutri+ 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/453/133https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/453/133http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/453/133https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/453/133https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/453/133http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/453/133GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/453/133/rvtau (List of Galactic RV Tauri stars (table2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/453/133/rvtau?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/133/rvtau?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/133/rvtau?GETtext/xml+votable180.050000true65.19843557.441241110.005555555555555556Cone search capability for table J/MNRAS/453/133/table1 (Reference sample, consisting of well-selected and observationally characterized post-AGB objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/453/133/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/133/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/133/table1?GETtext/xml+votable180.050000true26.445958346.81693610.0055555555555555566/736 1096 1229 1352 1365 1813 2365 2495 3181 3333 3649 3664 3807 4361 5966 7064 8669 9713 12820 12834 12851 12888 12948 12955 13164 13187 13232 13280 13729 13917 14106 14167 14253 14256 14323 14450-14451 14453 14480 14489 14532 14559 14702 14730 14738 14770 14880 14882 14930 15796 17072 18436 19100 20380 20921 21090 21326 21567 22069 22114 22129 22392 22425 22450 22800 23013 23660 23695 23707 23768 23821 23889 24079 24325 24374 24394 25501 28694 28698 28705 28710-28711 28717-28718 28722 28727 28735 28738 28751 28768 28776 28778-28779 28787 28799 28821 28864 28911 28957 28960 28969-28970 28974 29036 29094 29129 29234 29335 29458 29579 29771 29864-29865 29869 29935 29949-29950 30000 30211 30215 30217 30221 30297 30488 30498 30517 30540 30562 30661 31019 31050 31166 31212 31221 31417 31766 31821 31833 32181 32543 32562 32761 32900 33047 33053 33092-33093 33097-33099 33101 33120-33121 33181 33295 33316-33317 36973 37245 37306 37365 37841 37881 37915 37923 37942 38021 38169 38306 38812 39395 39629 39918 40046 40099 40555 41093 41212 41471 41487 41531 41545 41702 41815 41879 41945 42011 42088 42102 42112 42116 42128-42129 42197 42295 42338 42536 42802 43009 43217 43468 43535 43559 43651 44334 44436 45365 45800 47622 47658 47784 47961 48822 48883https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/453/133?format=asciiInfrareddefaultJ/MNRAS/453/133/rvtauList of Galactic RV Tauri stars (table2)NameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Name[* ] Note on Name (1)meta.notecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSpTypeMK spectral typesrc.spTypecharW3-W4WISE colour W3-W4magphot.color;em.IR;em.IRfloatW1-W2WISE colour W1-W2magphot.color;em.IR;em.IRfloatSEDSED comments (2)meta.codecharWISENearby WUSE sources (with 3arcsec)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/453/133/table1Reference sample, consisting of well-selected and observationally characterized post-AGB objectsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS name (HHMMm+DDMM)meta.id;meta.maincharn_IRAS[* ] Note (1)meta.notecharNameOther namemeta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypeMK spectral typesrc.spTypecharW3-W4? WISE colour W3-W4magphot.color;em.IR;em.IRfloatnullableW1-W2? WISE colour W1-W2magphot.color;em.IR;em.IRfloatnullableSEDSED comments: disc or shellmeta.codecharRefReferences (2)meta.refcharWISENearby WUSE sources (with 3arcsec)meta.ref.urlchar