Astron. Astrophys. 315, L193-L196 (1996)
ISO-SWS spectrophotometry of galactic Wolf-Rayet stars: preliminary results*
K.A. van der Hucht1, P.W. Morris2,1, P.M. Williams3, D.Y.A. Setia Gunawan1, D.A. Beintema2,4, D.R. Boxhoorn4, Th. de Graauw4, A. Heras2, D.J.M. Kester4, F. Lahuis2, K.J. Leech2, P.R. Roelfsema2,4, A. Salama2, E.A. Valentijn4, and B. Vandenbussche2,5
1 Space Research Organization Netherlands, Sorbonnelaan
2, 3584 CA Utrecht, The Netherlands
Received 15 July 1996 / Accepted 5 September 1996
Abstract. ISO-SWS spectra of seven late-type galactic Wolf-Rayet stars are discussed. A high resolution spectrum (2.3 - 29.6 m, 820 - 1700) of the WC8 star WR11 ( Vel) is shown and its Ne abundance is discussed. Medium resolution spectra ( 250 - 600) of the WC8-9 stars WR48a, WR98a, WR104, WR112 and WR118 show the broad circumstellar heated amorphous carbon dust emission feature and interstellar silicate and hydrocarbon absorption features.
Key words: stars: Wolf-Rayet - interstellar medium: extinction - infrared: spectroscopy
* Based on observations made with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, the Netherlands and the United Kingdom) and with the participation of ISAS and NASA.
Last change: December 16, 1996