J/A+A/685/A153ivo://CDS.VizieR/J/A+A/685/A153doi:10.26093/cds/vizier.36850153CDSPrudil Z.Smolec R.Kunder A.Koch-Hansen A.J.Dekany I.2025-03-05T20:01:10Z2024-07-25T13:23:09ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryvisible-astronomyradial-velocityWe present a new set of tools to derive systemic velocities for single-mode RR Lyrae stars from visual and near-infrared spectra. We derived scaling relations and line-of-sight velocity templates using both APOGEE and Gaia spectroscopic products combined with photometric G-band amplitudes. We provide a means to estimate systemic velocities for the RR Lyrae subclasses, RRab and RRc. Our analysis indicates that the scaling relation between the photometric and line-of-sight velocity amplitudes is nonlinear, with a break in a linear relation occurring around ~0.4mag in both the V-band and G-band amplitudes. We did not observe such a break in the relation for the first-overtone pulsators. Using stellar pulsation models, we further confirm and examine the nonlinearity in scaling relation for the RRab subclass. We observed little to no variation with stellar parameters (mass, metallicity, and luminosity) in the scaling relation between the photometric and line-of-sight velocity amplitudes for fundamental-mode pulsators. We observed an offset in the scaling relation between the observations and stellar pulsation models, mainly in the low-amplitude RR Lyrae regime. This offset disappears when different sets of convective parameters are used. Thus, the Fourier amplitudes obtained from the photometry and line-of-sight velocity measurements can be utilized to constrain convective parameters of stellar pulsation models. The scaling relations and templates for APOGEE and Gaia data accurately predict systemic velocities compared to literature values. In addition, our tools derived from the Gaia spectra improve the precision of the derived systemic velocities by approximately 50 percent and provide a better description of the uncertainty distribution in comparison with previous studies. Our newly derived tools will be used for RR Lyrae variables observed toward the Galactic bulge.2024A&A...685A.153Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/685/A153CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/A+A/674/A18 : Gaia DR3. The RR Lyrae sample (Clementini+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/685/A153https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/685/A153http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/685/A153https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/685/A153https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/685/A153http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/685/A153GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/685/A153/tablea1 (*List of nearby RR Lyrae variables observed by APOGEE and marked with the rrlyr label in APOGEE data products)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/685/A153/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/685/A153/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/685/A153/tablea1?GETtext/xml+votable180.050000true78.01778433.963053890.005555555555555556Cone search capability for table J/A+A/685/A153/tablea2 (Other nearby RR Lyrae stars observed by the APOGEE survey used in the creation of the line-of-sight velocity template for RR Lyrae stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/685/A153/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/685/A153/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/685/A153/tablea2?GETtext/xml+votable180.050000true195.8795971.112251110.0055555555555555566/110 1294 1663 4286 4330 4762 4764 4803 4833 5805 6567 6585 6744 6789 6934 7174 7900 8053 10602 11982 15106 15714 18177 19333 20303 23951 26281 26288 27333 28582 33281 33321 367041.1166583743361574e-19 1.2918781580533825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/685/A153?format=asciiOpticalInfrareddefaultJ/A+A/685/A153/tablea1*List of nearby RR Lyrae variables observed by APOGEE and marked with the rrlyr label in APOGEE data productsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAPOGEEAPOGEE ID (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharONameAlternative IDmeta.idcharn_OName[*] Note (1)meta.notecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainHmag2MASS H magnitudemagphot.mag;em.IR.HfloatNvisits? Number of visits per starmeta.numberintnullableTypeVariable typemeta.code;src.varcharn_Type[+] Note on Type (2)meta.notecharJ/A+A/685/A153/tablea2Other nearby RR Lyrae stars observed by the APOGEE survey used in the creation of the line-of-sight velocity template for RR Lyrae starsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAPOGEEAPOGEE ID (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharONameAlternative IDmeta.idcharn_OName[*] Note (1)meta.notecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainHmag2MASS H magnitudemagphot.mag;em.IR.HfloatNvisits? Number of visits per starmeta.numberintnullableTypeVariable typemeta.code;src.varcharJ/A+A/685/A153/tablea4Table for 34 RRab type variables with the lowest Amplos located at the nonlinear part of the amplitude scaling relationSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 source_idmeta.id;meta.mainAmpGPhotometric G amplitudemagsrc.var.amplitudefloate_AmpGPhotometric G amplitude errormagstat.errorfloatAmplosLine-of-sight velocity amplitudekm/sphys.velocfloate_AmplosLine-of-sight velocity amplitude errorkm/sstat.errorfloatPPuldation perioddtime.perioddouble[Fe/H]phot? Photometric metallicity (1)phys.abund.Fefloatnullablee_[Fe/H]phot? Photometric metallicity error (1)stat.error;phys.abund.FefloatnullableJ/A+A/685/A153/tablea6List of RR Lyrae stars used in the creation of line-of-sight velocity templates from Gaia RVS spectraSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNote[ABC] Note (1)meta.notecharGaiaDR3Gaia DR3 source_idmeta.id;meta.mainPPulsaton perioddtime.perioddoubleTypeVariable typemeta.code;src.varchar