AN EMPIRICAL UBV RI JHK COLOR-TEMPERATURE CALIBRATION FOR STARS
- Department of Physics and Astronomy, Washington State University, Pullman, WA 99164-2814 (United States)
- Department of Physics and Geology, The University of Texas-Pan American, Edinburg, TX 78539-2999 (United States)
A collection of Johnson/Cousins photometry for stars with known [Fe/H] is used to generate color-color relations that include the abundance dependence. Literature temperature and bolometric correction (BC) dependences are attached to the color relations. The JHK colors are transformed to the Bessell and Brett homogenized system. The main result of this work is the tabulation of seven colors and the V-band BC as a function of T {sub eff}, log g, and [Fe/H] for -1.06 < V - K < 10.2 and an accompanying interpolation program. Improvements to the present calibration would involve filling photometry gaps, obtaining more accurate and on-system photometry, knowing better log g and [Fe/H] values, improving the statistics for data-impoverished groups of stars such as metal-poor K dwarfs, applying small tweaks in the processing pipeline, and obtaining better empirical temperature and BC relations, especially for supergiants and M stars. A way to estimate dust extinction from M dwarf colors is pointed out.
- OSTI ID:
- 21557068
- Journal Information:
- Astrophysical Journal, Supplement Series, Vol. 193, Issue 1; Other Information: DOI: 10.1088/0067-0049/193/1/1; ISSN 0067-0049
- Country of Publication:
- United States
- Language:
- English
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