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Detection of anhydrous hydrochloric acid, HCl, in IRC +10216 with the Herschel SPIRE and PACS spectrometers. Detection of HCl in IRC +10216
Cernicharo, J.; Decin, L.; Barlow, M.J.; Agúndez, M.; Royer, P.; Vandenbussche, B.; Wesson, R.; Polehampton, E.T.; De Beck, E.; Blommaert, J.A.D.L.; Daniel, F.; De Meester, W.; Exter, K.M.; Feuchtgruber, H.; Gear, W.K.; Goicoechea, J.R.; Gomez, H.L.; Groenewegen, M.A.T.; Hargrave, P.C.; Huygen, R.; Imhof, P.; Ivison, R.J.; Jean, C.; Kerschbaum, F.; Leeks, S.J.; Lim, T.L.; Matsuura, M.; Olofsson, G.; Posch, T.; Regibo, S.; Savini, G.; Sibthorpe, B.; Swinyard, B.M.; Waelkens, C. (2010). Detection of anhydrous hydrochloric acid, HCl, in IRC +10216 with the Herschel SPIRE and PACS spectrometers. Detection of HCl in IRC +10216. Astron. Astrophys. 518: L136. https://dx.doi.org/10.1051/0004-6361/201014553
In: Astronomy & Astrophysics (Les Ulis). EDP Sciences: Les Ulis. ISSN 0004-6361; e-ISSN 1432-0746, more
Peer reviewed article  
Available in  Authors 
Author keywords
    stars: individual: IRC?+10216 / stars: carbon / astrochemistry / line: identification / stars: AGB and post-AGB
Authors  Top 
  • Cernicharo, J.
  • Decin, L.
  • Barlow, M.J.
  • Agúndez, M.
  • Royer, P.
  • Vandenbussche, B.
  • Wesson, R.
  • Polehampton, E.T.
  • De Beck, E.
  • Blommaert, J.A.D.L.
  • Daniel, F.
  • De Meester, W.
  • Exter, K.M., more
  • Feuchtgruber, H.
  • Gear, W.K.
  • Goicoechea, J.R.
  • Gomez, H.L.
  • Groenewegen, M.A.T.
  • Hargrave, P.C.
  • Huygen, R.
  • Imhof, P.
  • Ivison, R.J.
  • Jean, C.
  • Kerschbaum, F.
  • Leeks, S.J.
  • Lim, T.L.
  • Matsuura, M.
  • Olofsson, G.
  • Posch, T.
  • Regibo, S.
  • Savini, G.
  • Sibthorpe, B.
  • Swinyard, B.M.
  • Waelkens, C.
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 5 × 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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