The Gaia -ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia -ESO

Vista sencilla de ítem
dc.contributor.authorWorley C.C.
dc.contributor.authorJofré P.
dc.contributor.authorRendle B.
dc.contributor.authorMiglio A.
dc.contributor.authorMagrini L.
dc.contributor.authorFeuillet D.
dc.contributor.authorGavel A.
dc.contributor.authorSmiljanic R.
dc.contributor.authorLind K.
dc.contributor.authorKorn A.
dc.contributor.authorGilmore G.
dc.contributor.authorRandich S.
dc.contributor.authorHourihane A.
dc.contributor.authorGonneau A.
dc.contributor.authorFrancois P.
dc.contributor.authorLewis J.
dc.contributor.authorSacco G.
dc.contributor.authorBragaglia A.
dc.contributor.authorHeiter U.
dc.contributor.authorFeltzing S.
dc.contributor.authorBensby T.
dc.contributor.authorIrwin M.
dc.contributor.authorGonzalez Solares E.
dc.contributor.authorMurphy D.
dc.contributor.authorBayo A.
dc.contributor.authorSbordone L.
dc.contributor.authorZwitter T.
dc.contributor.authorLanzafame A.C.
dc.contributor.authorWalton N.
dc.contributor.authorZaggia S.
dc.contributor.authorAlfaro E.J.
dc.contributor.authorMorbidelli L.
dc.contributor.authorSousa S.
dc.contributor.authorMonaco L.
dc.contributor.authorCarraro G.
dc.contributor.authorLardo C.
dc.date.accessioned2021-11-08T18:30:59Z
dc.date.available2021-11-08T18:30:59Z
dc.date.issued2020-11
dc.descriptionIndexación Scopuses
dc.description.abstractContext. The extensive stellar spectroscopic datasets that are available for studies in Galactic Archeaology thanks to, for example, the Gaia-ESO Survey, now benefit from having a significant number of targets that overlap with asteroseismology projects such as Kepler, K2, and CoRoT. Combining the measurements from spectroscopy and asteroseismology allows us to attain greater accuracy with regard to the stellar parameters needed to characterise the stellar populations of the Milky Way. Aims. The aim of this Gaia-ESO Survey special project is to produce a catalogue of self-consistent stellar parameters by combining measurements from high-resolution spectroscopy and precision asteroseismology. Methods. We carried out an iterative analysis of 90 K2@Gaia-ESO red giants. The spectroscopic values of Teff were used as input in the seismic analysis to obtain log  g values. The seismic estimates of log were then used to re-determine the spectroscopic values of Teff and [Fe/H]. Only one iteration was required to obtain parameters that are in good agreement for both methods and, thus, to obtain the final stellar parameters. A detailed analysis of outliers was carried out to ensure a robust determination of the parameters. The results were then combined with Gaia DR2 data to compare the seismic log with a parallax-based log and to investigate instances of variations in the velocity and possible binaries within the dataset. Results. This analysis produced a high-quality catalogue of stellar parameters for 90 red giant stars from K2@Gaia-ESO that were determined through iterations between spectroscopy and asteroseismology. We compared the seismic gravities with those based on Gaia parallaxes to find an offset which is similar to other studies that have used asteroseismology. Our catalogue also includes spectroscopic chemical abundances and radial velocities, as well as indicators for possible binary detections. © ESO 2020.es
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2020/11/aa36726-19/aa36726-19.html
dc.identifier.citationAstronomy and Astrophysics, Volume 6431 November 2020 Article number A83es
dc.identifier.doi10.1051/0004-6361/201936726
dc.identifier.issn00046361
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/20798
dc.language.isoenes
dc.publisherEDP Scienceses
dc.subjectGaiaes
dc.subjectSolar Neighborhoodes
dc.subjectLAMOSTes
dc.titleThe Gaia -ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia -ESOes
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Worley_C_The_Gaia_ESO_2020.pdf
Tamaño:
1.7 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLÉS
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