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ALMA Observations o...
ALMA Observations of Anisotropic Dust Mass Loss around VY CMa
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- O Gorman, Eamon, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Vlemmings, Wouter, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Richards, A. M. S. (author)
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Baudry, A. (author)
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- De Beck, Elvire, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Decin, L. (author)
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Harper, G. M. (author)
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Humphreys, E. M. (author)
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Kervella, P. (author)
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- Khouri, Theo, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Muller, Sebastien, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9781583818831
- 2015
- 2015
- English.
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In: 4th ALMA Science Conference on Revolution in Astronomy with ALMA: The Third Year, Tokyo, Japan, 8-11 December. - 9781583818831 ; 499, s. 335-336
- Related links:
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https://research.cha...
Abstract
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- We present high resolution ALMA Science Verification data of the continuum emission around the highly evolved oxygen-rich red supergiant VY CMa. These data enable us to study the dust in its inner circumstellar environment at a spatial resolution of 129 mas at 321 GHz and 59 mas at 658 GHz, thus allowing us to trace dust on spatial scales down to 11 R-star (71 AU). Two prominent dust components are detected and resolved. We find that at least 17% of the dust mass around VY CMa is located in clumps ejected within a more quiescent roughly spherical stellar wind, with a quiescent dust mass loss rate of 5 x 10(-6) M-circle dot yr(-1). The anisotropic morphology of the dust indicates a continuous, directed mass loss over a few decades, suggesting that this mass loss cannot be driven by large convection cells alone.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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O Gorman, Eamon, ...
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Vlemmings, Woute ...
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Richards, A. M. ...
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Baudry, A.
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De Beck, Elvire, ...
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Decin, L.
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show more...
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Harper, G. M.
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Humphreys, E. M.
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Kervella, P.
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Khouri, Theo, 19 ...
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Muller, Sebastie ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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4th ALMA Science ...
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Chalmers University of Technology