On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations

Vista sencilla de ítem
dc.contributor.authorNeeley, J.R.
dc.contributor.authorMarengo, M.
dc.contributor.authorBono, G.
dc.contributor.authorBraga, V.F.
dc.contributor.authorDall'ora, M.
dc.contributor.authorMagurno, D.
dc.contributor.authorMarconi, M.
dc.contributor.authorTrueba, N.
dc.contributor.authorTognelli, E.
dc.contributor.authorMoroni, P.G.P.
dc.contributor.authorBeaton, R.L.
dc.contributor.authorFreedman, W.L.
dc.contributor.authorMadore, B.F.
dc.contributor.authorMonson, A.J.
dc.contributor.authorScowcroft, V.
dc.contributor.authorSeibert, M.
dc.contributor.authorStetson, P.B.
dc.date.accessioned2017-11-24T18:36:45Z
dc.date.available2017-11-24T18:36:45Z
dc.date.issued2017-06
dc.descriptionIndexación: Web of Science; Scopus.es_CL
dc.description.abstractWe present new theoretical period-luminosity-metallicity (PLZ) relations for RR Lyræ stars (RRLs) at Spitzer and WISE wavelengths. The PLZ relations were derived using nonlinear, time-dependent convective hydrodynamical models for a broad range of metal abundances (Z = 0.0001-0.0198). In deriving the light curves, we tested two sets of atmospheric models and found no significant difference between the resulting mean magnitudes. We also compare our theoretical relations to empirical relations derived from RRLs in both the field and in the globular cluster M4. Our theoretical PLZ relations were combined with multi-wavelength observations to simultaneously fit the distance modulus, μ 0, and extinction, A V, of both the individual Galactic RRL and of the cluster M4. The results for the Galactic RRL are consistent with trigonometric parallax measurements from Gaia's first data release. For M4, we find a distance modulus of μ 0 = 11.257 ± 0.035 mag with A V = 1.45 ± 0.12 mag, which is consistent with measurements from other distance indicators. This analysis has shown that, when considering a sample covering a range of iron abundances, the metallicity spread introduces a dispersion in the PL relation on the order of 0.13 mag. However, if this metallicity component is accounted for in a PLZ relation, the dispersion is reduced to ∼0.02 mag at mid-infrared wavelengths.es_CL
dc.description.urihttp://iopscience.iop.org/article/10.3847/1538-4357/aa713d/meta
dc.identifier.citationAstrophysical Journal. Volume 841, Issue 2, June 2017, Article number 84es_CL
dc.identifier.issn0004-637X
dc.identifier.otherDOI: 10.3847/1538-4357/aa713d
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/4738
dc.language.isoenes_CL
dc.publisherInstitute of Physics Publishinges_CL
dc.subjectInfrared: starses_CL
dc.subjectStars: horizontal-branches_CL
dc.subjectStars: variables: RR Lyraees_CL
dc.titleOn a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relationses_CL
dc.typeArtículoes_CL
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Neeley_On_a_New_Theoretical.pdf
Tamaño:
1011.57 KB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista