Subarcsecond resolution observations of the central parsec of the Galaxy at 2. 2 microns
Journal Article
·
· Astrophysical Journal; (USA)
- New York State Univ., Stony Brook (USA) Rochester Univ., NY (USA) Royal Observatory, Edinburgh (Scotland)
Four separate lunar occultations of the Galactic center in the infrared K-band have been observed, and the results are used to estimate the size of the sources and to derive photometry. It is found that IRS 16NE, 16NW, and IRS 29 are smaller than about 510 AU and IRS 16SW-W and C are smaller than 85 AU. All sources brighter than K = 10 mag in the central pc are smaller than 510 AU and therefore seem to be stars. IRS 7 is smaller than about 100 AU. IRS 1W and 13, resolved into pairs of stars, are probably the exciting stars for these H II regions. The shape of the differential luminosity function of the stars in the central sq pc is similar to that of stars in the central 150 sq pc. There is a steady increase in star density toward the central few arcsec of the Galaxy. 26 refs.
- OSTI ID:
- 6334363
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 360; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-resolution infrared mapping of the Galactic center - Imaging and lunar occultations
High-resolution IRCCD images of the Galactic center at 2. 2 and 3. 5 microns
Velocity dispersion and the stellar population in the central 1. 2 parsecs of the Galaxy
Journal Article
·
Sat Sep 01 00:00:00 EDT 1990
· Astrophysical Journal; (USA)
·
OSTI ID:6149475
High-resolution IRCCD images of the Galactic center at 2. 2 and 3. 5 microns
Journal Article
·
Sat Jul 01 00:00:00 EDT 1989
· Astronomical Journal; (USA)
·
OSTI ID:5398121
Velocity dispersion and the stellar population in the central 1. 2 parsecs of the Galaxy
Journal Article
·
Wed Aug 01 00:00:00 EDT 1990
· Astrophysical Journal; (USA)
·
OSTI ID:6550585