IRFM Teff calibrations for cluster and field giants in the Vilnius, Geneva RI(C) and DDO photometric systems

被引：8

作者：

Ramírez, I

Meléndez, J

机构：

[1] Univ Nacl Mayor San Marcos, Fac Ciencias Fis, Seminario Permanente Astron & Ciencias Espaciales, Lima 1, Peru

[2] Univ Texas, Dept Astron, Austin, TX 78712 USA

[3] CALTECH, Dept Astron, Pasadena, CA 91125 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 417卷 / 01期

关键词：

stars : fundamental parameters; stars : atmospheres;

D O I：

10.1051/0004-6361:20031764

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on a large sample of disk and halo giant stars for which accurate effective temperatures derived through the InfraRed Flux Method (IRFM) exist, a calibration of the temperature scale in the Vilnius, Geneva, RI(C) and DDO photometric systems is performed. We provide calibration formulae for the metallicity-dependent T-eff vs. color relations as well as grids of intrinsic colors and compare them with other calibrations. Photometry, atmospheric parameters and reddening corrections for the stars of the sample have been updated with respect to the original sources to reduce the dispersion of the fits. Application of our results to Arcturus leads to an effective temperature in excellent agreement with the value derived from its angular diameter and integrated flux. The effects of gravity on these T-eff vs. color relations are also explored by taking into account our previous results for dwarf stars.

引用

页码：301 / 316

页数：16

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