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| Query : 2000A&A...358L..25D |
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
| Number of rows : 2 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | V* IK Tau | OH* | 03 53 28.8924743304 | +11 24 21.895183368 | 16.99 | 14.463 | 16.171 | 14.101 | M7-11 | 638 | 0 | |
| 2 | * chi Cyg | S* | 19 50 33.9213430345 | +32 54 50.575531294 | 7.02 | 6.06 | 4.24 | 1.81 | -0.01 | S6-9/1-2e | 693 | 0 |
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