SIMBAD references

2000A&A...358L..25D - Astronomy and Astrophysics, volume 358, L25-28 (2000/6-2)

HCN in the inner envelope of χ Cygni.

DUARI D. and HATCHELL J.

Abstract (from CDS):

We have detected the (0,11c,0)J=3-2 and (0,0,0)J=8-7 transitions of HCN towards the S star χ Cygni. The excitation requirements of these transitions are too high to be satisfied in the outer envelope of the star, and the emission must originate within {solar}20 stellar radii, ie. the molecule must be forming close to the star. This conclusion is supported by a model for AGB stars in which molecules including HCN form in a shocked wind close to the stellar surface.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB and post-AGB - stars: circumstellar matter - stars: individual: χ Cyg - submillimeter

Simbad objects: 2

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