The peculiar supernova remnant CTB 80

Details The peculiar supernova remnant CTB 80 The peculiar supernova remnant CTB 80

2001-01-12

arxiv.org/abs/astro-ph/0101199v1

Astronomy and Astrophysics

Astrophysics

19 pages, 6 png figures. Submitted revised version to A & A

Scientific paper

10.1051/0004-6361:20010350

Deep CCD exposures of the peculiar supernova remnant CTB 80 in the light of major optical lines have been obtained. These images reveal significant shock heated emission in the area of the remnant. The sulfur line image shows emission in the north along the outer boundary of the IRAS and HI shells. The comparison between the [OIII] and [OII] line images further suggest the presence of significant inhomogeneities in the interstellar medium. The flux calibrated images do not indicate the presence of incomplete recombination zones, and we estimate that the densities of the preshock clouds should not exceed a few atoms per cm^3. The area covered by the optical radiation along with the radio emission at 1410 MHz suggest that CTB 80 occupies a larger angular extent than was previously known.

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