Bibcode
Yaz, E.; Bilir, S.; Karaali, S.; Ak, S.; Coşkunoğlu, B.; Cabrera-Lavers, A.
Referencia bibliográfica
Astronomische Nachrichten, Vol.331, Issue 8, p.807
Fecha de publicación:
8
2010
Número de citas
11
Número de citas referidas
11
Descripción
We present colour transformations from Two Micron All Sky Survey (2MASS)
photometric system to Johnson-Cousins system and to Sloan Digital Sky
Survey (SDSS) system for late-type giants and vice versa. The giant star
sample was formed using surface gravity constraints ({2 < log g ≤
3}) to Cayrel de Strobel et al.' s (2001) spectroscopic catalogue.
2MASS, SDSS and Johnson-Cousins photometric data was taken from
cite{Cu03}, cite{Ofek08}, and cite{vanLeeuwen2007}, respectively. The
final sample was refined applying the following steps: (1) the data were
dereddened, (2) the sample stars selected are of the highest photometric
quality. We give two-colour dependent transformations as a function of
metallicity as well as independent of metallicity. The transformations
provide absolute magnitudes and distance determinations which can be
used in space density evaluations at relatively short distances where
some or all of the SDSS magnitudes of late-type giants are saturated.
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