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- Title
Transformations from WISE to 2MASS, SDSS and BVI Photometric Systems: II. Transformation Equations for Red-Clump Stars.
- Authors
Bilir, S.; Karaali, S.; Dağtekin, N. D.; Önal, Ö.; S. Ak; T. Ak; Cabrera-Lavers, A.
- Abstract
We present colour transformations for the conversion of Wide-Field Survey Explorer W1, W2, and W3 magnitudes to the Johnson-Cousins BVI[sub c], Sloan Digital Sky Survey gri, and Two Micron All Sky Survey JHK[sub s] photometric systems, for red clump (RC) stars. RC stars were selected from the Third Radial Velocity Experiment Data Release. The apparent magnitudes were collected by matching the coordinates of this sample with different photometric catalogues. The final sample (355 RC stars) was used to obtain metallicity-dependent and free-of-metallicity transformations. These transformations combined with known absolute magnitudes at shorter wavelengths can be used in space density determinations for the Galactic (thin and thick) discs at distances larger than the ones evaluated with JHK[sub s] photometry alone, hence providing a powerful tool in the analysis of Galactic structure. We present colour transformations for the conversion of WISE magnitudes to the BVI[sub c], gri, and JHK[sub s] photometric systems for red clump stars. The selected samples were used to obtain metallicity-dependent and free-of-metallicity transformations. These transformations can be used in the studies of the Galactic structure.
- Subjects
PHOTOMETRY equipment; EQUATIONS; STAR colors; STELLAR magnitudes; CELESTIAL reference systems; WAVELENGTHS
- Publication
Publications of the Astronomical Society of Australia, 2012, Vol 29, Issue 2, p121
- ISSN
1323-3580
- Publication type
Article
- DOI
10.1071/AS11078