Search: onr:"swepub:oai:DiVA.org:su-51699" >
PACS and SPIRE spec...
PACS and SPIRE spectroscopy of the red supergiant VY CMa
-
Royer, P. (author)
-
Decin, L. (author)
-
Wesson, R. (author)
-
show more...
-
Barlow, M. J. (author)
-
Polehampton, E. T. (author)
-
Matsuura, M. (author)
-
Agundez, M. (author)
-
Blommaert, J. A. D. L. (author)
-
Cernicharo, J. (author)
-
Cohen, M. (author)
-
Daniel, F. (author)
-
Degroote, P. (author)
-
De Meester, W. (author)
-
Exter, K. (author)
-
Feuchtgruber, H. (author)
-
Gear, W. K. (author)
-
Gomez, H. L. (author)
-
Groenewegen, M. A. T. (author)
-
Hargrave, P. C. (author)
-
Huygen, R. (author)
-
Imhof, P. (author)
-
Ivison, R. J. (author)
-
Jean, C. (author)
-
Kerschbaum, F. (author)
-
Leeks, S. J. (author)
-
Lim, T. (author)
-
Lombaert, R. (author)
-
- Olofsson, Göran (author)
- Stockholms universitet,Institutionen för astronomi
-
Posch, T. (author)
-
Regibo, S. (author)
-
Savini, G. (author)
-
Sibthorpe, B. (author)
-
Swinyard, B. M. (author)
-
Vandenbussche, B. (author)
-
Waelkens, C. (author)
-
Witherick, D. K. (author)
-
Yates, J. A. (author)
-
show less...
-
(creator_code:org_t)
- 2010-07-16
- 2010
- English.
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 518, s. L145-
- Related links:
-
https://www.aanda.or...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- With a luminosity > 10(5) L-circle dot and a mass-loss rate of similar to 2 x 10(-4) M-circle dot yr(-1), the red supergiant VY CMa truly is a spectacular object. Because of its extreme evolutionary state, it could explode as supernova any time. Studying its circumstellar material, into which the supernova blast will run, provides interesting constraints on supernova explosions and on the rich chemistry taking place in such complex circumstellar envelopes. We have obtained spectroscopy of VY CMa over the full wavelength range offered by the PACS and SPIRE instruments of Herschel, i.e. 55-672 micron. The observations show the spectral fingerprints of more than 900 spectral lines, of which more than half belong to water. In total, we have identified 13 different molecules and some of their isotopologues. A first analysis shows that water is abundantly present, with an ortho-to-para ratio as low as similar to 1.3:1, and that chemical non-equilibrium processes determine the abundance fractions in the inner envelope.
Keyword
- line: identification
- stars: chemically peculiar
- circumstellar matter
- stars: mass-loss
- supergiants
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Royer, P.
-
Decin, L.
-
Wesson, R.
-
Barlow, M. J.
-
Polehampton, E. ...
-
Matsuura, M.
-
show more...
-
Agundez, M.
-
Blommaert, J. A. ...
-
Cernicharo, J.
-
Cohen, M.
-
Daniel, F.
-
Degroote, P.
-
De Meester, W.
-
Exter, K.
-
Feuchtgruber, H.
-
Gear, W. K.
-
Gomez, H. L.
-
Groenewegen, M. ...
-
Hargrave, P. C.
-
Huygen, R.
-
Imhof, P.
-
Ivison, R. J.
-
Jean, C.
-
Kerschbaum, F.
-
Leeks, S. J.
-
Lim, T.
-
Lombaert, R.
-
Olofsson, Göran
-
Posch, T.
-
Regibo, S.
-
Savini, G.
-
Sibthorpe, B.
-
Swinyard, B. M.
-
Vandenbussche, B ...
-
Waelkens, C.
-
Witherick, D. K.
-
Yates, J. A.
-
show less...
- Articles in the publication
-
Astronomy and As ...
- By the university
-
Stockholm University