Dust Formation in Hot Stellar Winds: Infra-Red Imaging of the Wolf-Rayet Binary WR137

Details Dust Formation in Hot Stellar Winds: Infra-Red Imaging of the Wolf-Rayet Binary WR137 Dust Formation in Hot Stellar Winds: Infra-Red Imaging of the Wolf-Rayet Binary WR137

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7369m&link_type=abstract

HST Proposal ID #7369

Astronomy and Astrophysics

Astronomy

Hst Proposal Id #7369 Hot Stars And Stellar Corpses

Scientific paper

We propose to use NICMOS on HST to image the dust formed in the bow shock region of the 12.6-year elliptical-orbit binary WR 137 = HD 192641 {WC7+OB}, within a year after periastron passage, predicted to occur in late 1996 or early 1997. Ground -based IR photometry has shown that copious amounts of carbon- rich dust are formed just after periastron passage, when wind- wind collision compression is at its peak. WR 137 is the currently most favorable system for the direct detection of the extended dust formation region among all known WR episodic dust emitters. Imaging of the dust emitting region will directly test for the first time the concept of wind-wind collision and allow one to study how and where dust can form in such a hostile environment.

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