期刊
ASTRONOMY & ASTROPHYSICS
卷 518, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201014553
关键词
stars: individual: IRC+10216; stars: carbon; astrochemistry; line: identification; stars: AGB and post-AGB
资金
- BMVIT (Austria)
- ESA-PRODEX (Belgium)
- CEA (France)
- CNES (France)
- DLR (Germany)
- ASI (Italy)
- CICT (Spain)
- MCT (Spain)
- CSA (Canada)
- NAOC (China)
- CNRS (France)
- MCINN (Spain)
- SNSB (Sweden)
- STFC (UK)
- NASA (USA)
- Spanish MICINN [AYA2006-14876, AYA2009-07304, CSD2009-00038]
- Fund for Scientific Research -Flanders (FWO)
- Austrian Science Fund FWF [P18939-N16, I163-N16]
- Belgian Federal Science Policy Office of ESA
- STFC [ST/G002827/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E001181/1, ST/G002827/1] Funding Source: researchfish
- Austrian Science Fund (FWF) [P18939] Funding Source: Austrian Science Fund (FWF)
We report on the detection of anhydrous hydrochloric acid (hydrogen chlorine, HCl) in the carbon-rich star IRC+10216 using the spectroscopic facilities onboard the Herschel satellite. Lines from J = 1-0 up to J = 7-6 have been detected. From the observed intensities, we conclude that HCl is produced in the innermost layers of the circumstellar envelope with an abundance relative to H-2 of 5 x 10(-8) and extends until the molecules reach its photodissociation zone. Upper limits to the column densities of AlH, MgH, CaH, CuH, KH, NaH, FeH, and other diatomic hydrides have also been obtained.
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