A Spitzer IRS survey of Wolf-Rayet stars at 10–20 microns
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Publication date
2008
Authors
Ignace, R.
Cassinelli, J.P.
Tracy, G.
Lamers, H.J.G.L.M.
Churchwell, E.B.
Editors
de Koter, A.
Smith, L.J.
Waters, L.B.F.M.
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Part of book
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Abstract
We report on a mid-infrared survey of Wolf-Rayet stars using the Spitzer IRS/SH instrument for types WN4-WN7 and WC4-WC7. Strong emission line spectra are seen, including forbidden emission lines. Surprisingly, the WN stars appear to show broad emission “bumps” that may be consistent with silicate dust grains.
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Ignace, R, Cassinelli, J P, Tracy, G, Lamers, H J G L M & Churchwell, E B 2008, A Spitzer IRS survey of Wolf-Rayet stars at 10–20 microns. in A de Koter, L J Smith & L B F M Waters (eds), Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006. Astronomical Society of the Pacific conference series, no. 388, Astronomical Society of the Pacific, San Francisco, pp. 177-178.