New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind

Contreras, M. E. et al · Universidad Nacional Autónoma de México. Instituto de Astronomía · 2000

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Author / responsible party

Contreras, M. E. et al

Publisher

Universidad Nacional Autónoma de México. Instituto de Astronomía

Year

2000

ISSN

0185-1101

ISSN

0185-1101

Language

English

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The interaction between a stellar wind and its surrounding ISM can create H I cavities or bubbles. In particular, WR 6 shows a very large ovoidal H I bubble around it, whose shape cannot be explained in terms of the standard interstellar bubble theory, and may require an anisotropic stellar wind. In this paper, we have studied this possibility using new 3.6-cm VLA observations. We found no firm evidence supporting the possibility that WR 6 has a strongly anisotropic wind and conclude that our data are consistent with an isotropic wind. Under this assumption we have determined the source size, its brightness temperature and its mass loss rate. Comparing our four flux densities obtained over approximately 6 months, we found no evidence of large variability (<= 15%). It has also been proposed that WR 6 could be a WR+c binary, but the observed radio characteristics do not support this hypothesis. Fil: Contreras, M. E.. Universidad Nacional Autónoma de México; México Fil: Rodríguez, L. F.. Universidad Nacional Autónoma de México; México

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APA 7

Contreras, M. E. E. A. (2000). New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind. http://hdl.handle.net/11336/31636

MLA

Contreras, M. E. et al. "New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind." 2000. http://hdl.handle.net/11336/31636.

Chicago

Contreras, M. E. et al. 2000. "New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind.". http://hdl.handle.net/11336/31636.

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Contreras, M. E. E. A. 2000, New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind, Universidad Nacional Autónoma de México. Instituto de Astronomía, available at: http://hdl.handle.net/11336/31636 [Accessed 10 Aug. 2026].

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Title: New VLA observations of WR 6 (= HR 50896): a search for an anisotropic wind

Author / contributors: Contreras, M. E. et al

Publisher: Universidad Nacional Autónoma de México. Instituto de Astronomía

Publication year: 2000

ISSN: 0185-1101

ISSN: 0185-1101

Language: English

Subjects

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Interstellar bubbles; Interstellar medium; Wolf rayet stars; Neutral hydrogen; https://purl.org/becyt/ford/1.3; https://purl.org/becyt/ford/1