Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228..477g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 2, Feb. 1990, p. 477-479.
Astronomy and Astrophysics
Astronomy
8
Cosmic Dust, Infrared Sources (Astronomy), Interstellar Matter, Supernova Remnants, X Ray Sources, Hydrogen Atoms, Infrared Astronomy Satellite, Supernovae
Scientific paper
The existence is reported of a void, 4.5 deg x 3 deg, in the 100 micron emission from dust in a region in Lupus observed by IRAS. The void is surrounded by a ring of enhanced emission and is coincident both in position and shape with an extended X-ray source suggested by Riegler et al. (1980) to be a 7000-10,000 yr old supernova remnant with unusual properties. This study renders support to this hypothesis and also to an estimated distance of a few hundred parsec to the object. The star formation regions in Lupus are unrelated to this feature. Attention is drawn to a more extended structure in the intensity contours of the 100 micron emission and also to filaments of faint visual light and to clouds of high velocity neutral hydrogen in the area. The remnant appears to be expanding in the center of a larger bubble with a radius of 7 deg the origin of this feature is discussed.
Gahm Goesta F.
Gebeyehu M.
Lindgren Mats
Magnusson Per
Modigh P.
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