Abstract
view Abstract Citations (13) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Field Color-Magnitude Diagram Analysis along the Bulge Major Axis Ortolani, S. ; Bica, E. ; Barbuy, B. Abstract We analyze background fields along the bulge major axis away from the Galactic center by 2.5, 13, and 31 deg. Our aim is to study the spatial distribution of different stellar populations. A similar component of young disk main-sequence population is present in all fields. The bulge component prevails in the innermost field, decreases for the 13-deg one, and is essentially absent in the 31-deg one. Evidence for a weak old metal-poor component is seen in the three fields. In the 13-deg field we detect a peculiar new feature which could be interpreted as an intermediate-age component, and traces of this population in the 2.5-deg field are also found. This might be an old disk component. Publication: The Astrophysical Journal Pub Date: May 1993 DOI: 10.1086/186823 Bibcode: 1993ApJ...408L..29O Keywords: Color-Magnitude Diagram; Galactic Bulge; Galactic Structure; Blue Stars; Star Distribution; Astrophysics; GALAXY: STELLAR CONTENT; GALAXY: STRUCTURE full text sources ADS | data products SIMBAD (7)
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