Light and Color Curves of Six Field RR Lyrae Variable Stars
| Autor: | Rodolfo Montez, Andrew C. Layden, Gabriel Brammer, Donald Hoard, Shadrian Holmes, Jorge Cuadra, Kathy L. Cooksey, Alicia S. Day, Erika Labbe |
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| Rok vydání: | 2002 |
| Předmět: |
Physics
Field (physics) Extinction (astronomy) Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics RR Lyrae variable Light curve Stars Amplitude Space and Planetary Science Range (statistics) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Publications of the Astronomical Society of the Pacific. 114:645-649 |
| ISSN: | 1538-3873 0004-6280 |
| Popis: | We present light curves in the B, V, and I passbands for six field RR Lyrae stars. We derive the stars' intensity‐mean magnitudes, light amplitudes, and colors at minimum light. We compare the latter with measurements from other variables and discuss the use of (V−I) color at minimum light as a tool for measuring interstellar reddening. From 15 stars, we find the mean dereddened RR Lyrae color at minimum light to be (V−I)0 = 0.57 mag. The rms scatter of 0.025 mag indicates the precision of this value over a wide range of metallicities and pulsation periods. |
| Databáze: | OpenAIRE |
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