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An ALMA view of the post-AGB object HD101584
Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden..
Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden..
Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden..
European Southern Observ, Garching, Germany..
Show others and affiliations
2016 (English)In: 11th Pacific Rim Conference On Stellar Astrophysics: Physics And Chemistry Of The Late Stages Of Stellar Evolution, Pts 1-6 / [ed] Kwok, S Leung, KC, IOP PUBLISHING LTD , 2016, UNSP 042005Conference paper (Refereed)
Abstract [en]

ALMA cycles 1 and 3 observations of CO isotopologues and 1.3mm continuum are used in a study of the circumstellar environment of the binary HD 101584, a post-AGB star and a low-mass companion that is most likely a post-common-envelope-evolution system. These data are supplemented with new information from OH maser emission. It is inferred that the large- scale circumstellar medium has a bipolar hour-glass structure, seen almost pole-on, formed by an energetic, >= 150 km s(-1), jet. Significant amount of material still resides in the central region. It is proposed that the circumstellar morphology is related to an event which took place <= 500 yr ago, possibly a capture event where the companion spiralled in towards the AGB star. Several observed features remain to be explained, and may hint to a more complicated scenario.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2016. UNSP 042005
Series
Journal of Physics Conference Series, ISSN 1742-6588 ; 728
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-321274DOI: 10.1088/1742-6596/728/4/042005ISI: 000397958000030OAI: oai:DiVA.org:uu-321274DiVA: diva2:1092377
Conference
11th Pacific Rim Conference on Stellar Astrophysics - Physics and Chemistry of the Late Stages of Stellar Evolution, DEC 14-15, 2015, Univ Hong Kong, Hong Kong, PEOPLES R CHINA
Available from: 2017-05-02 Created: 2017-05-02 Last updated: 2017-05-02Bibliographically approved

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