Metal-poor turnoff and subgiant field stars in the Galaxy - I. RGU photometry in a high-latitude field near M101
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, cilt.131, sa.2, ss.345-354, 1998 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 131 Sayı: 2
- Basım Tarihi: 1998
- Doi Numarası: 10.1051/aas:1998429
- Dergi Adı: ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.345-354
- İstanbul Üniversitesi Adresli: Evet
Özet
Photographic RGU photometry for about 1800 stars down to a limiting G-magnitude of 19.5 in a high-latitude field ((l, b) = (101 degrees, +60 degrees)) near the galaxy M101 is investigated. We use an improved variant of the classical three-color method which is based on recent UBV-RGU-photometric transforms and calibrations (Buser 1988; Buser & Fenkart 1990) and on models of the stellar density distributions of the Galactic population components.