Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321..975k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 321, Oct. 15, 1987, p. 975-983. NSERC-NASA-supported research.
Astronomy and Astrophysics
Astronomy
19
Asymptotic Giant Branch Stars, Giant Stars, Infrared Stars, Late Stars, Space Observations (From Earth), Stellar Mass Ejection, Variable Stars, Hydroxyl Radicals, Infrared Astronomy Satellite
Scientific paper
Analysis of the color distribution of OH/IR stars and IRAS low-resolution spectra class 30 objects suggests the presence of a well-defined evolutionary sequence which is populated by late asymptotic giant branch (LAGB) stars. The paper reports ground-based identification and infrared photometry of 10 candidates of news LAGB stars. None of the selected sources are found to have optical counterparts, and eight of the 10 show a strong 10-micron silicate absorption feature. It is suggested that these stars represent an invisible extension of extreme Mira variables and are some of the most evolved stars observed to date.
Boreiko Rita T.
Hrivnak Bruce J.
Kwok Sun
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