The Gaia-ESO Survey and Massive Stars

The Gaia-ESO Survey and Massive Stars

As part of the Gaia-ESO Survey (GES), a number of clusters will be observed that were chosen specifically for their massive-star content. We report on the procedures we followed to determine the stellar parameters from the massive-star spectra of this survey. We intercompare the results from the dif...

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Veröffentlicht in:Proceedings of the International Astronomical Union 2014-06, Vol.9 (S307), p.88-89
Hauptverfasser: Blomme, Ronny, Frémat, Yves, Gosset, Eric, Herrero, Artemio, Lobel, Alex, Apellániz, Jesús Maíz, Morel, Thierry, Negueruela, Ignacio, Semaan, Thierry, Simón-Díaz, Sergio, Volpi, Delia
Format: Artikel
Sprache:eng
Schlagworte:
Astronomical bodies
Astronomical instruments
Astronomy
Astrophysics
Clusters
Contributed Papers
Evolution
Massive stars
Mathematical models
Radial velocity
Spectra
Stars & galaxies
Stellar evolution
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Beschreibung
Zusammenfassung:As part of the Gaia-ESO Survey (GES), a number of clusters will be observed that were chosen specifically for their massive-star content. We report on the procedures we followed to determine the stellar parameters from the massive-star spectra of this survey. We intercompare the results from the different techniques used by the nodes of our group to determine these parameters and discuss some of the problems encountered. We present preliminary results for NGC 6705, NGC 3293, and Trumpler 14. We study microturbulence in A-type stars, we use the repeat observation to investigate binarity, and we determine cluster membership from the radial velocity information. The large number of massive-star spectra obtained by the Gaia-ESO Survey will allow us to critically test stellar evolution modelling.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921314006322