J/ApJ/834/160ivo://CDS.VizieR/J/ApJ/834/160doi:10.26093/cds/vizier.18340160CDSNgeow C.-C.Kanbur S.M.Bhardwaj A.Schrecengost Z.Singh H.P.2017-09-04T08:34:10Z2017-08-10T14:18:26ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomysloan-photometrytwo-color-diagramsInvestigation of period-color (PC) and amplitude-color (AC) relations at the maximum and minimum light can be used to probe the interaction of the hydrogen ionization front (HIF) with the photosphere and the radiation hydrodynamics of the outer envelopes of Cepheids and RR Lyraes. For example, theoretical calculations indicated that such interactions would occur at minimum light for RR Lyrae and result in a flatter PC relation. In the past, the PC and AC relations have been investigated by using either the (V-R)_MACHO_ or (V-I) colors. In this work, we extend previous work to other bands by analyzing the RR Lyraes in the Sloan Digital Sky Survey Stripe 82 Region. Multi-epoch data are available for RR Lyraes located within the footprint of the Stripe 82 Region in five (ugriz) bands. We present the PC and AC relations at maximum and minimum light in four colors: (u-g)_0_, (g-r)_0_, (r-i)_0_, and (i-z)_0_, after they are corrected for extinction. We found that the PC and AC relations for this sample of RR Lyraes show a complex nature in the form of flat, linear or quadratic relations. Furthermore, the PC relations at minimum light for fundamental mode RR Lyrae stars are separated according to the Oosterhoff type, especially in the (g-r)_0_ and (r-i)_0_ colors. If only considering the results from linear regressions, our results are quantitatively consistent with the theory of HIF-photosphere interaction for both fundamental and first overtone RR Lyraes.2017ApJ...834..160Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/834/160CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/130/1640 : Photom. of candidate RR Lyrae stars in the SDSS (Wu+, 2005)J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)J/MNRAS/398/1757 : RR Lyraes in SDSS stripe 82 (Watkins+, 2009)J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010)J/MNRAS/424/2528 : RR Lyrae in SDSS Stripe 82 (Suveges+, 2012)J/MNRAS/441/715 : Mid-infrared study of RR Lyrae stars (Gavrilchenko+, 2014)J/MNRAS/441/1230 : RRLyr stars in the Catalins Sky Survey (CS2) (Abbas+, 2014)http://www.astro.washington.edu/users/ivezic/sdss/catalogs/stripe82.html :https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/834/160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/834/160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/834/160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/834/160https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/834/160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/834/160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/834/160/table1 (Amplitudes and colors at the maximum and minimum light for RR Lyrae stars in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/834/160/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/834/160/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/834/160/table1?GETtext/xml+votable180.050000true0.935678891.115858890.0055555555555555565/4453 4694 4709 4714 4757 4761 4773 4774 4778 7509 7510 6/1 12288 12289 17405 17406 17407 17726 17727 17748 17749 17755 17756 17761 17765 17768 17769 17770 17772 17773 17774 17776 17807 17817 17818 17819 17820 17821 17822 17827 17829 17830 17832 17833 17842 17982 17983 17999 18001 18004 18009 18013 18017 18021 18022 18024 18025 18070 18075 18076 18077 18078 18082 18083 18086 18087 18090 18092 18094 18097 18098 18114 18177 18178 18679 18685 18687 18750 18751 18770 18771 18772 18773 18781 18782 18785 18786 18788 18791 18795 18796 18797 18798 18800 18802 18830 18834 18840 18841 18843 18849 18850 18851 18852 18853 18854 18860 18866 18880 18881 18882 19005 19006 19007 19021 19023 19026 19027 19032 19033 19034 19037 19041 19042 19048 19050 19051 19053 19054 19056 19057 19058 19085 19086 19087 19091 19100 19101 19102 19105 19106 19107 19110 19111 19116 19117 19120 19122 19128 19136 19137 19138 19200 19456 19457 19458 23102 23103 23139 23145 23146 23147 23150 23186 23189 23190 23191 23194 23196 23197 23198 23204 23205 23210 23217 23218 23232 23233 30029 30030 30031 30033 30034 30035 30044 30045 30046 30052 30053 30055 30064 30065 30066 36861 36862 36863 49149 49150 49151https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/834/160?format=asciiOpticaldefaultJ/ApJ/834/160/table1Amplitudes and colors at the maximum and minimum light for RR Lyrae stars in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[SIG2010]RR Lyrae ID (Sesar+, 2010, J/ApJ/708/717)meta.id;meta.mainintTypeRR Lyrae type (1)meta.notecharlog(P)[-0.6/-0.08] log of Periodlog(d)time.perioddoublegAmp[0.2/1.7] g-band amplitudemagsrc.var.amplitudefloat(u-g)_MAX[0.9/1.3] Extinction corrected (u-g) color index at maximum lightmagphot.color;em.opt.U;em.opt.Bfloat(g-r)_MAX[-0.3/0.2] Extinction corrected (g-r) color index at maximum lightmagphot.color;em.opt.B;em.opt.Rfloat(r-i)_MAX[-0.3/0.07] Extinction corrected (r-i) color index at maximum lightmagphot.color;em.opt.R;em.opt.Ifloat(i-z)_MAX[-0.2/0.09] Extinction corrected (i-z) color index at maximum lightmagphot.color;em.opt.I;em.opt.Ifloat(u-g)_MIN[0.8/1.3] Extinction corrected (u-g) color index at minimum lightmagphot.color;em.opt.U;em.opt.Bfloat(g-r)_MIN[-0.02/0.4] Extinction corrected (g-r) color index at minimum lightmagphot.color;em.opt.B;em.opt.Rfloat(r-i)_MIN[-0.06/0.2] Extinction corrected (r-i) color index at minimum lightmagphot.color;em.opt.R;em.opt.Ifloat(i-z)_MIN[-0.08/0.2] Extinction corrected (i-z) color index at minimum lightmagphot.color;em.opt.I;em.opt.IfloatSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Sesar+, 2010, J/ApJ/708/717 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Sesar+, 2010, J/ApJ/708/717 (declination part)degpos.eq.dec;meta.main