An Improved uvby-Metallicity Calibration for Metal-rich Stars
Abstract
We present an improved uvby-metallicity relation calibrated for F, G, and early K dwarfs and an analogous uvby-Teff relation, both derived using a Levenberg-Marquardt minimization scheme. Our calibrations are based on 1533 stars that appear in both the Cayrel de Strobel metallicity compilation and in the Hauck-Mermilliod catalog of uvby photometry. We also examine the speculative possibility of using uvby photometry to produce a uvby-planeticity calibration. We conclude that while there is likely no strong photometric indicator of the presence or absence of short-period planets, the possibility of a spectroscopic indicator of planeticity is well worth examining.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 2002
- DOI:
- 10.1086/344165
- arXiv:
- arXiv:astro-ph/0207054
- Bibcode:
- 2002ApJ...577L..45M
- Keywords:
-
- Stars: Planetary Systems;
- Stars: Abundances;
- Astrophysics
- E-Print:
- 9 pages, 4 figures, accepted in ApJ Letters