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3.20. OH/IR stars as signposts for ancient starburst activity in the Galactic center

Published online by Cambridge University Press:  25 May 2016

L.O. Sjouwerman ,
H.J. Habing ,
H.J. van Langevelde ,
M. Lindqvist  and
A. Winnberg
L.O. Sjouwerman
Affiliation:
Onsala Space Observatory and Sterrewacht Leiden
H.J. Habing
Affiliation:
Sterrewacht Leiden
H.J. van Langevelde
Affiliation:
Joint Institute for VLBI in Europe
M. Lindqvist
Affiliation:
Onsala Space Observatory
A. Winnberg
Affiliation:
Onsala Space Observatory

Extract

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We have surveyed the Galactic center (GC) for OH/IR stars, evolved late-type stars of different masses - and thus ages - in a short-lived stage of heavy mass-loss. By observing the 1612 MHz OH masers generated in their circumstellar shells, it is found that a considerable fraction of these OH/IR stars has the same high-valued shell expansion velocity of 19 km s−1.

Type
Part I. Stellar Cluster, Star Formation
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 129 - 130
Copyright
Copyright © Kluwer 1998