Detection of anhydrous hydrochloric acid, HCl, in IRC+10216 with the Herschel SPIRE and PACS spectrometers
arXiv:1005.4220 · doi:10.1051/0004-6361/201014553
Abstract
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 H2 of 5x10^-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.
Accepted for publication in Astronomy and Astrophysics (Herschel special issue)
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- A Comprehensive Survey of Hydrogen Chloride in the Galaxy
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- ExoMol photodissociation cross sections I: HCl and HF
- ATOMIUM: Halide molecules around the S-type AGB star W Aquilae
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