Issue |
Astron. Astrophys. Suppl. Ser.
Volume 133, Number 1, November II 1998
|
|
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Page(s) | 61 - 70 | |
DOI | https://doi.org/10.1051/aas:1998310 | |
Published online | 15 November 1998 |
The structure of atomic gas around the supernova remnant 3C 400.2
1
Instituto de Astronomía y Física del Espacio, CC 67, Suc. 28, 1428 - Buenos Aires, ArgentinaE.B.G., G.D. and C.C., are Members of the Carrera del Investigador Científico, CONICET, Argentina. e-mail: egiacani@iafe.uba.ar, gdubner@iafe.uba.ar
2
Facultad de Ciencias Astronómicas y Geofísicas, UNLP, Argentina
3
Instituto Argentino de Radioastronomía, Argentina
Send offprint request to: E. Giacani
Received:
7
April
1998
Accepted:
14
May
1998
The interaction of the SNR 3C 400.2 with the interstellar medium is
investigated on the basis of the HI observations using the Synthesis
Radio Telescope at the Dominion Radio Astrophysical Observatory
(DRAO). These new data show the existence of a dense atomic cloud
associated with 3C 400.2 in the velocity range +14 to +42 km s-1, and
high velocity clouds probably accelerated by the supernova blast wave
at km s-1 and +69 km s-1. We propose that the complex remnant 3C 400.2
is the result of a supernova explosion in a region of the interstellar
medium containing a density discontinuity. A breakout phenomenon may
explain the observed morphology in the different spectral
regimes.
Key words: supernova remnants (SNRs) / supernova remnants: individual (3C 400.2) / radio lines: ISM / ISM: structure
© European Southern Observatory (ESO), 1998