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Empirical calibration of the near-infrared CaII triplet - II. The stellar atmospheric parameters

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Cenarro, A. J. and Gorgas García, Francisco Javier and Cardiel López, Nicolás and Pedraz, S. and Peletier, R. F. and Vazdekis, A. (2001) Empirical calibration of the near-infrared CaII triplet - II. The stellar atmospheric parameters. Monthly notices of the Royal Astronomical Society, 326 (3). pp. 981-994. ISSN 0035-8711

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Official URL: http://dx.doi.org/10.1046/j.1365-8711.2001.04689.x




Abstract

We present a homogeneous set of stellar atmospheric parameters (T-eff, log g, [Fe/H]) for a sample of about 700 field and cluster stars which constitute a new stellar library in the near-IR developed for stellar population synthesis in this spectral region (lambda 8350-9020). Having compiled the available atmospheric data in the literature for field stars, we have found systematic deviations between the atmospheric parameters from different bibliographic references. The Soubiran, Katz & Cayrel sample of stars with very well determined fundamental parameters has been taken as our standard reference system, and other papers have been calibrated and bootstrapped against it. The obtained transformations are provided in this paper. Once most of the data sets were on the same system, final parameters were derived by performing error weighted means. Atmospheric parameters for cluster stars have also been revised and updated according to recent metallicity scales and colour-temperature relations.


Item Type:Article
Additional Information:

This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2001 RAS. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. We are indebted to the anonymous referee for very useful suggestions. Work on writing this paper was partially developed while AJC was a visitor at the Department of Physics (University of Durham) and at the School of Physics and Astronomy (University of Nottingham), whose hospitality is acknowledged gratefully. This research has made use of the Simbad data base (operated at CDS, Strasbourg, France), the NASAs Astrophysics Data System Article Service, and the Hipparcos Input Catalog. AV acknowledges the support of the PPARC rolling grant ‘Extragalactic Astronomy and Cosmology in Durham 1998–2002’. This work was supported in part by a British Council grant within the British/Spanish Joint Research Programme (Acciones Integradas). AJC acknowledges the Comunidad de Madrid for a Formación de Personal Investigador fellowship. This work was supported by the Spanish Programa Sectorial de Promoción del Conocimiento under grants No. PB96-610 and AYA2000-977

Uncontrolled Keywords:Metal-poor stars; Elodie echelle spectra; Deficient red giants; Old open clusters; T-EFF; Globular-clusters; Log-G; Effective temperatures; Chemical-composition; Online determination
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:29897
Deposited On:04 May 2015 09:49
Last Modified:10 Dec 2018 15:05

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