Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266..247w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 266, NO. 1/JAN, P. 247, 1994
Astronomy and Astrophysics
Astronomy
23
Circumstellar Matter - Stars: Individual: Wr 125 - Stars: Wolf-Rayet - Dust, Extinction - Infrared: Stars
Scientific paper
During 1992-93 the infrared flux from the Wolf-Rayet star WR 125, which formed a dust shell in 1990-91, reached a maximum. This is attributed to the continuous formation of dust in its wind until early 1993. Spectroscopy of the dust cloud in the 10-μm region showed that the expected WR emission lines were completely veiled by featureless emission from the heated dust. There was no evidence for silicate, silicon carbide or the narrow 11.52-μm graphite feature, supporting the view that the dust is amorphous carbon. An optical spectrum in the violet shows O II, He II and H absorption lines, confirming the deduction from the observed dilution of the WR emission lines that WR 125 is a binary system, and indicating a type of O9III for the companion to the WC7 star.
Bouchet Patrice
Geballe Thomas Ronald
Kidger Mark R.
van der Hucht Karel A.
Williams Peredur M.
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