High-resolution IRCCD images of the Galactic center at 2. 2 and 3. 5 microns

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115137· OSTI ID:5398121

Tollestrup, E V; Becklin, E E; Capps, R W ^[1]

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1. Hawaii Univ., Honolulu (USA)

An IRCCD camera was used to obtain high-resolution images at 2.2 and 3.5 microns of the Galactic center at subarcsecond resolution. These images show that the compact nonthermal radio source Sgr A-asterisk is not coincident with any part of IRS 16; Sgr A-asterisk is found to be 1.1 + or - 0.3 arcsec west of IRS 16C. At 3.5 microns, IRS 16 is a complex object. IRS 16SW is resolved into two sources, and IRS 16C may be double or extended. From the colors and sizes of the various components, it is difficult to explain these objects as stellar clusters; the required stellar density would be too high. Finally, there is evidence that there is a blue and a red source, separated by about 1 arcsec, for each of the northern arm sources, IRS 1W, IRS 5, and IRS 10. 42 refs.

• OSTI ID: 5398121
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 98; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGE-COUPLED DEVICES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
GALAXIES
GALAXY NUCLEI
IMAGES
INFRARED RADIATION
INTERSTELLAR SPACE
MILKY WAY
MORPHOLOGY
RADIATIONS
RESOLUTION
SEMICONDUCTOR DEVICES
SPACE
STAR CLUSTERS