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Silicon in the dust...
Silicon in the dust formation zone of IRC+10216
- Article/chapterEnglish2010
Publisher, publication year, extent ...
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2010-07-16
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EDP Sciences,2010
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:su-51700
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-51700URI
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https://doi.org/10.1051/0004-6361/201014562DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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authorCount :39
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The interstellar medium is enriched primarily by matter ejected from evolved low and intermediate mass stars. The outflows from these stars create a circumstellar envelope in which a rich gas-phase and dust-nucleation chemistry takes place. We observed the nearest carbon-rich evolved star, IRC + 10216, using the PACS (55-210 mu m) and SPIRE (194-672 mu m) spectrometers on board Herschel. We find several tens of lines from SiS and SiO, including lines from the v = 1 vibrational level. For SiS these transitions range up to J = 124-123, corresponding to energies around 6700 K, while the highest detectable transition is J = 90-89 for SiO, which corresponds to an energy around 8400 K. Both species trace the dust formation zone of IRC + 10216, and the broad energy ranges involved in their detected transitions permit us to derive the physical properties of the gas and the particular zone in which each species has been formed. This allows us to check the accuracy of chemical thermodynamical equilibrium models and the suggested depletion of SiS and SiO due to accretion onto dust grains.
Subject headings and genre
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techniques: spectroscopic
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stars: AGB and post-AGB
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stars: carbon
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circumstellar matter
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stars: mass-loss
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stars: individual: IRC+10216
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NATURAL SCIENCES
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NATURVETENSKAP
Added entries (persons, corporate bodies, meetings, titles ...)
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Cernicharo, J.
(author)
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Barlow, M. J.
(author)
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Royer, P.
(author)
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Vandenbussche, B.
(author)
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Wesson, R.
(author)
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Polehampton, E. T.
(author)
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De Beck, E.
(author)
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Agundez, M.
(author)
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Blommaert, J. A. D. L.
(author)
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Cohen, M.
(author)
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Daniel, F.
(author)
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De Meester, W.
(author)
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Exter, K.
(author)
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Feuchtgruber, H.
(author)
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Fonfria, J. P.
(author)
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Gear, W. K.
(author)
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Goicoechea, J. R.
(author)
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Gomez, H. L.
(author)
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Groenewegen, M. A. T.
(author)
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Hargrave, P. C.
(author)
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Huygen, R.
(author)
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Imhof, P.
(author)
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Ivison, R. J.
(author)
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Jean, C.
(author)
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Kerschbaum, F.
(author)
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Leeks, S. J.
(author)
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Lim, T.
(author)
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Matsuura, M.
(author)
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Olofsson, GöranStockholms universitet,Institutionen för astronomi(Swepub:su)olofsson
(author)
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Posch, T.
(author)
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Regibo, S.
(author)
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Savini, G.
(author)
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Sibthorpe, B.
(author)
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Swinyard, B. M.
(author)
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Tercero, B.
(author)
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Waelkens, C.
(author)
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Witherick, D. K.
(author)
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Yates, J. A.
(author)
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Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
Related titles
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In:Astronomy and Astrophysics: EDP Sciences518, s. L143-0004-63611432-0746
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Decin, L.
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Cernicharo, J.
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Barlow, M. J.
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Royer, P.
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Vandenbussche, B ...
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Wesson, R.
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show more...
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Polehampton, E. ...
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De Beck, E.
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Agundez, M.
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Blommaert, J. A. ...
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Cohen, M.
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Daniel, F.
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De Meester, W.
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Exter, K.
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Feuchtgruber, H.
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Fonfria, J. P.
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Gear, W. K.
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Goicoechea, J. R ...
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Gomez, H. L.
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Groenewegen, M. ...
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Hargrave, P. C.
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Huygen, R.
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Imhof, P.
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Ivison, R. J.
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Jean, C.
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Kerschbaum, F.
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Leeks, S. J.
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Lim, T.
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Matsuura, M.
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Olofsson, Göran
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Posch, T.
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Regibo, S.
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Savini, G.
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Sibthorpe, B.
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Swinyard, B. M.
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Tercero, B.
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Waelkens, C.
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Witherick, D. K.
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Yates, J. A.
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Stockholm University