Publication:
New LZ and PW(Z) relations of RR Lyrae stars calibrated with Gaia EDR3 parallaxes

Simple item page
dc.contributor.authorGAROFALO, ALESSIA
dc.contributor.authordelgado
dc.contributor.orcidhttps://orcid.org/0000-0002-5907-0375
dc.date.accessioned2024-05-31T16:12:48Z
dc.date.available2024-05-31T16:12:48Z
dc.date.issued2022-03-17
dc.descriptionThe registered version of this article, first published in Monthly Notices of the Royal Astronomical Society, is available online at the publisher's website: Oxford Academic, https://doi.org/10.1093/mnras/stac735
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en Monthly Notices of the Royal Astronomical Society, está disponible en línea en el sitio web del editor: Oxford Academic, https://doi.org/10.1093/mnras/stac735
dc.description.abstractWe present new luminosity–metallicity (LZ; and ⁠) relations and, for the first time, empirical, Gaia three-band (G, GBP, GRP) period-Wesenheit-metallicity (PWZ) relations of RR Lyrae stars (RRLs) derived using a hierarchical Bayesian approach and new accurate parallaxes published for these variables in the Gaia Early Data Release 3 (EDR3). In a previous study, we obtained Bayesian hierarchically derived LZ relations from a sample of about four hundred Milky Way field RRLs with G-band light curves and trigonometric parallaxes published in the Gaia Data Release 2 (DR2), using V mean magnitudes, metallicities, absorptions, and pulsation periods available in the literature. We now extend that study in two directions. First, we update our previous results using trigonometric parallaxes from Gaia EDR3 and incorporate the Bayesian analysis of a first empirical PWZ relation derived using those field RRLs with G, GBP and GRP time-series photometry available in Gaia DR2. Secondly, we use Bayesian inference to derive LZ relations and empirical PW Gaia three-band relations from 385 RRLs belonging to 15 Milky Way globular clusters (GC) with literature-compiled spectroscopic metallicities ranging from −0.36 to −2.39 dex and prior distances extending from 2.2 to 41.2 kpc. From the samples of RRLs analysed in this paper we infer a mean Gaia EDR3 zero-point offset of −0.028 mas with median values ranging from −0.033 (LZ and PWZ models for field stars) to −0.024 mas (LZ model in the V band for GC RRLs).en
dc.description.versionversión publicada
dc.identifier.citationA Garofalo, H E Delgado, L M Sarro, G Clementini, T Muraveva, M Marconi, V Ripepi, New LZ and PW(Z) relations of RR Lyrae stars calibrated with Gaia EDR3 parallaxes, Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 1, June 2022, Pages 788–806, https://doi.org/10.1093/mnras/stac735
dc.identifier.doihttps://doi.org/10.1093/mnras/stac735
dc.identifier.issn0035-8711 - eISSN 1365-2966
dc.identifier.urihttps://hdl.handle.net/20.500.14468/22245
dc.journal.issue1
dc.journal.titleMonthly Notices of the Royal Astronomical Society
dc.journal.volume513
dc.language.isoen
dc.page.final806
dc.page.initial788
dc.publisherOxford Academic
dc.relation.centerE.T.S. de Ingeniería Informática
dc.relation.departmentInteligencia Artificial
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject33 Ciencias Tecnológicas
dc.subject.keywordsmethods: data analysisen
dc.subject.keywordsmethods: statisticalen
dc.subject.keywordsparallaxesen
dc.subject.keywordsstars: variables: RR Lyraeen
dc.subject.keywordsglobular clusters: generalen
dc.titleNew LZ and PW(Z) relations of RR Lyrae stars calibrated with Gaia EDR3 parallaxesen
dc.typejournal articleen
dc.typeartículoes
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
sarrobaro_luismanuel_NewLZand.pdf
Size:
2.49 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.62 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
Artículos y papers