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An ALMA view of the...
An ALMA view of the post-AGB object HD101584
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- Olofsson, H. (författare)
- Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden.
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- Vlemmings, W. (författare)
- Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden.
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- Maercker, M. (författare)
- Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden.
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- Humphreys, E. (författare)
- European Southern Observ, Garching, Germany.
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- Lindqvist, M. (författare)
- Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden.
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- Nyman, L. (författare)
- Joint ALMA Observ, Santiago, Chile.
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- Ramstedt, Sofia (författare)
- Uppsala universitet,Teoretisk astrofysik
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Chalmers, Dept Earth & Space Sci, Gothenburg, Sweden European Southern Observ, Garching, Germany. (creator_code:org_t)
- 2016-08-08
- 2016
- Engelska.
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Ingår i: 11th Pacific Rim Conference On Stellar Astrophysics. - : IOP PUBLISHING LTD.
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)