NEAR-INFRARED SPECTROSCOPY OF POST-AGB STARS

Authors
OUDMAIJER RD WATERS LBFM VANDERVEEN WECJ GEBALLE TR
Citation
Rd. Oudmaijer et al., NEAR-INFRARED SPECTROSCOPY OF POST-AGB STARS, Astronomy and astrophysics, 299(1), 1995, pp. 69-78
Citations number
54
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
299
Issue
1
Year of publication
1995
Pages
69 - 78
Database
ISI
SICI code
0004-6361(1995)299:1<69:NSOPS>2.0.ZU;2-D
Abstract
The results of a medium resolution near-infrared spectral survey of 18 post-AGB candidate stars are presented. Most of the stars have near-i nfrared hydrogen lines in absorption, which is normal for their spectr al types. Three stars, HD 101584, HD 179821 and HD 170756 have the CO first overtone bands in emission; in two of these the emission is vari able. It is suggested that the CO emission is the result of post-AGB m ass loss. HD 52961 shows the rarely occurring 3.5 mu m emission featur e and is only the fourth object in which this feature has been detecte d.