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The Hamburg Database of Circumstellar OH Masers

Published online by Cambridge University Press:  24 July 2012

Dieter Engels
Dieter Engels*
Affiliation:
Hamburger Sternwarte, Gojenbergsweg 112, D–21029 Hamburg, Germany email: dengels@hs.uni-hamburg.de
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Abstract

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A new version of the Hamburg Database of Circumstellar OH Masers at 1612, 1665, and 1667 MHz was released in 2012 January. The database now lists 13170 OH maser observations of stars in the Milky Way. They belong to 6318 different objects and 2324 of them were detected in at least one of the transitions. The database contains flux densities and velocities of the two strongest maser peaks, the expansion velocity of the shell and the radial velocity of the star. Compared to the first version presented in 2007 at the IAU Symposium 242 in Alice Springs new observations published 2008–2011 are included. Interferometric observations and monitoring programs of the maser emission were also added. Access to the database is possible over the Web (www.hs.uni-hamburg.de/maserdb), allowing cone searches for individual objects and lists of objects. A general object search is possible in selected regions of the sky and by defining ranges of flux densities and/or velocities.

Keywords

maserscatalogsstars: AGB and post-AGBstars: late-type
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 256 - 257
Copyright
Copyright © International Astronomical Union 2012

References

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