other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2001ApJ...547..240P - Astrophys. J., 547, 240-251 (2001/January-3)
Hot horizontal-branch stars in the Galactic Bulge. I..
PETERSON R.C., TERNDRUP D.M., SADLER E.M. and WALKER A.R.
Abstract (from CDS):
Forty-seven BHB candidates were identified with Teff≥7250 K. Seven have the gravities of Population I stars, three are ambiguous, and 37 are HB stars, including perhaps a dozen RR Lyrae stars. The unambiguous BHB stars are all cooler than 9000 K. They span a wide metallicity range, from solar to 1/300 solar. The warmer BHB stars are more metal-poor and loosely concentrated toward the Galactic center, while the cooler ones are of somewhat higher metallicity and are situated closer to the center. We detect two cool solar-metallicity HB stars in the bulge of our own Galaxy, the first such stars known. Still elusive are their fainter hot counterparts, the metal-rich sdB/O stars strong in ultraviolet light.
Abstract Copyright: ∼
Journal keyword(s): Galaxy: Center - Stars: Abundances - Stars: Horizontal-Branch - Stars: Variables: Other
Nomenclature: Table 1, col(1): [PTS2001] NNN N=47 among (Nos 7-197).
CDS comments: Table 1, col(2): numbering not identified, not used.
Simbad objects: 53
To bookmark this query, right click on this link: simbad:2001ApJ...547..240P and select 'bookmark this link' or equivalent in the popup menu