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Discovery of the fi...
Discovery of the first Ca-bearing molecule in space: CaNC
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- Cernicharo, J. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Velilla Prieto, Luis, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Agundez, M. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Pardo, J. R. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Fonfria, J. P. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Quintana-Lacaci, G. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Cabezas, C. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Bermudez, C. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Guelin, M. (författare)
- Institut de Radioastronomie Millimétrique (IRAM)
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(creator_code:org_t)
- 2019-07-03
- 2019
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 627
- Relaterad länk:
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https://www.aanda.or...
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https://research.cha...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- We report on the detection of calcium isocyanide, CaNC, in the carbon-rich evolved star IRC + 10216. We derived a column density for this species of (2 +/- 0.5) x 10(11) cm(-2). Based on the observed line profiles and the modelling of its emission through the envelope, the molecule has to be produced in the intermediate and outer layers of the circumstellar envelope where other metal-isocyanides have previously been found in this source. The abundance ratio of CaNC relative to MgNC and FeCN is congruent to 1/60 and congruent to 1, respectively. We searched for the species CaF, CaCl, CaC, CaCCH, and CaCH3 for which accurate frequency predictions are available. Only upper limits have been obtained for these molecules.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- stars: individual: IRC+10216
- line: identification
- molecular data
- astrochemistry
- stars: carbon
- circumstellar matter
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- art (ämneskategori)
- ref (ämneskategori)
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