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The outer wind of gamma Velorum

Abstract:

Fine-structure mid-infrared emission lines with critical densities in the regime 10 4 ≤ n crit ≤ 10 6cm -3 can be employed to probe the outflow from Wolf-Rayet (WR) stars at radii of ~10 15cm. Narrow-band mid-infrared imaging and spectroscopy of the nearest WR star to the Sun, γVelorum is analysed for spatially resolved forbidden line emission in the WR outer wind. The [Siv] 10.52-μm and [Neii] 12.81-μm emission regions are found to be spatially extended, compared to unresolved continuum and ...

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Publication status:
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Colling, MD More by this author
Barlow, MJ More by this author
Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
427
Issue:
1
Pages:
581-588
Publication date:
2012-11-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:bd6e65c8-26ec-4602-97f0-6fd3355d0847
Source identifiers:
364378
Local pid:
pubs:364378

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