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| Query : 2001A&A...378L..29L |
2001A&A...378L..29L - Astronomy and Astrophysics, volume 378, L29-32 (2001/10-4)
Cold HI in IRC +10216.
LE BERTRE T. and GERARD E.
Abstract (from CDS):
With the recently refurbished Nancay Radiotelescope we have observed the HI 21cm line in the direction of IRC +10216, a typical high mass-loss carbon star. We found HI in absorption indicating that the expanding circumstellar gas may reach very low temperatures (≤4K). The atomic gas could be the product of the photo-dissociation of molecular hydrogen in the outer envelope or result from a previous phase (≥6x103 years ago) of mass loss when the star had a higher effective temperature than now.
Abstract Copyright: ∼
Journal keyword(s): stars: circumstellar matter - stars: mass-loss - stars: AGB and post-AGB - radio lines: stars
Simbad objects: 3
| Number of rows : 3 |
| 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 | * omi Cet | Mi* | 02 19 20.79210 | -02 58 39.4956 | 7.63 | 6.53 | 5.03 | M5-9IIIe+DA | 1527 | 0 | ||
| 2 | * alf Ori | s*r | 05 55 10.30536 | +07 24 25.4304 | 4.38 | 2.27 | 0.42 | -1.17 | -2.45 | M1-M2Ia-Iab | 1669 | 0 |
| 3 | IRC +10216 | C* | 09 47 57.40632 | +13 16 43.5648 | C9,5e | 2341 | 0 |
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