Stellar libraries for Gaia
- Creators
- Sordo, R.
- Vallenari, Antonella
- Tantalo, R.
- Liu, C.
- Smith, K.
- Allard, F.
- Blomme, Ronny
- Bouret, J.-C.
- Brott, I.
- de Laverny, P.
- Edvardsson, B.
- Frémat, Yves
- Heber, U.
- Josselin, E.
- Kochukhov, Oleg
- Korn, A. J.
- Lanzafame, A. C.
- Martayan, Christophe
- Martins, Fabrice
- Plez, Bertrand
- Schweitzer, A.
- Thévenin, Frédéric
- Zorec, Juan
- Others:
- INAF-Osservatorio Astronomico di Padova
- Università degli Studi di Padova = University of Padua (Unipd)
- Max-Planck-Institut für Astronomie (MPIA)
- Centre de Recherche Astrophysique de Lyon (CRAL) ; École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Observatoire Royal de Belgique (ORB)
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Astronomical Institute, Utrecht University
- Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)
- Department of Physics and Astronomy, Uppsala Astronomical Observatory
- Dr. Karl Remeis-Sternwarte, Astronomisches Institut, Universität Erlangen-Nuremberg
- Groupe de Recherches Autrichiennes et Allemandes. UHB (GRAAL) ; MEN : JE2314-Université de Rennes 2 (UR2) ; Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)
- Uppsala University
- Università degli studi di Catania = University of Catania (Unict)
- European Southern Observatory
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Hamburger Sternwarte, Universität Hamburg
- Institut d'Astrophysique de Paris (IAP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Description
Gaia will observe up to a billion stellar sources. Automated algorithms are under development to derive the atmospheric parameters of all observed spectra, from low resolution optical spectra alone or in synergy with high resolution spectra in the near-IR Ca II triplet region. To do so, a large database of state-of-the-art stellar libraries has been produced for the Gaia community, computed using different codes optimized for specific purposes. The choice to use different spectral codes in different regions of the H-R diagram raises the problem of the coherence of the different spectra, specifically in the transition zones. We present a comparison between the libraries from the point of view of spectra simulations for training the Gaia algorithms. We also present the implementation of these libraries into a Simple Stellar Population code.
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-03734713
- URN
- urn:oai:HAL:hal-03734713v1
- Origin repository
- UNICA