Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.296..333s&link_type=abstract
Nature, vol. 296, Mar. 25, 1982, p. 333, 334.
Astronomy and Astrophysics
Astronomy
6
Charge Coupled Devices, Galactic Nuclei, Infrared Imagery, Near Infrared Radiation, Power Spectra, Angular Resolution, Forbidden Transitions, H Ii Regions, Image Resolution, Late Stars, Supergiant Stars
Scientific paper
CCD images in the near IR of the galactic center have revealed the presence of two objects 3 arcsec along the galactic plane. Brackett gamma emission maps of 2 arcsec resolution have displayed peaks in the same location, although the existence of two Be stars having an identical emission so close together is considered impossible. The observed flux has been calculated to be 1.9/10 to the 21st W per sq cm, corresponding to a dereddened flux of 2.2/10 to the 16th W per sq cm. A lack of sufficient definition is noted in current astrometric maps to correlate the observed CCD images with previously observed objects. An alternative explanation to the existence of two late red supergiants is offered in terms of two compact H II regions, and some support for this is found in that forbidden S III transitions would issue energy comparable to that of the calculated dereddened flux. Further measurements at 10.5 microns of any forbidden S IV transitions are indicated for determining the nature of the ionizing source.
Jorden Paul R.
Storey John W. V.
Straede J. O.
Thorne James D.
Wall Jasper V.
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