Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340..256p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 340, May 1, 1989, p. 256-264.
Astronomy and Astrophysics
Astrophysics
12
Halos, Interstellar Gas, Line Of Sight, Magellanic Clouds, Supernova 1987A, Astronomical Spectroscopy, Forbidden Transitions, Iron, Stellar Coronas, Stellar Envelopes
Scientific paper
The first detection of forbidden Fe X 6375 A in the ISM of the LMC in front of SN 1987A is reported. The forbidden Fe X has an equivalent width of 2.5 mA or greater and extends over the velocity range 215-270 km/s. The detection implies a high column density of coronal gas comparable to that of neutral hydrogen detected in 21 cm emission. Possible sites for the absorption are considered. A likely interpretation is that the absorption is due to 10 to the 6th K gas associated with the supergiant H II region 30 Doradus, where the combined effects of previous SNe appear to have produced superbubbles in the ISM with radii greater than 100 pc.
D'Odorico Sandro
Molaro Paolo P.
Pettini Max
Stathakis Raylee
Vladilo Giovanni
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