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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693647.0, MPI für Astronomie / Publikationen_mpia
Calibration of stellar and atmospheric models using the Hyades
Authors:Kopytova, T. G.; Brandner, W.; Röser, S.; Schilbach, E.; Da Rio, N.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Memorie della Societa Astronomica Italiana
Volume:84
Issue / Number:4
Start Page:1066
End Page:1069
Audience:Not Specified
Abstract / Description:Calibration and benchmarking of evolutionary and atmospheric models is essential for the study of low-mass stars and brown dwarfs, as for isolated objects these models are the only way to determine basic parameters like mass and age. The Hyades star cluster with an age of around 625 Myr and located at the distance of ˜ 45 pc, is the most accessible cluster in the solar neighborhood. \citet{roe11} establish a list of 724 likely Hyades members. Using available literature data \citep[HST, HIPPARCOS, WDS;][]{pat98,mer09,mor11} and our own lucky imaging observations with AstraLux at the 2.2m telescope in Calar Alto, we establish a single-star sequence containing 255 Hyades members spanning the mass range ˜ 0.2-1.5 solar masses . This sequence is used for testing and calibration of various existing stellar and atmospheric models (PADOVA, DARTMOUTH, BCAH, BT-Settl).
Free Keywords:Stars: atmospheres; Stars: binaries: general; Stars: Hertzsprung-Russell and C-M diagrams; Galaxy: open clusters and associations: individual: Hyades; Galaxy: solar neighborhood
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0037-8720
URL:http://cdsads.u-strasbg.fr/abs/2013MmSAI..84.1066K
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