H2O and SiO masers in the Galactic center Virtual Observatory Resource

Authors

1. Sjouwerman L.O.
2. Lindqvist M.
3. van Langevelde H.J.
4. Diamond P.J.

Published by

CDS

Abstract

We have performed targeted surveys for 22GHz H_2_O and 43GHz SiO maser emission in Galactic center OH/IR stars using the Very Large Array. Some of the detections have been used in a previous paper to investigate the possibility of measuring milli-arcsecond accurate positions (to obtain stellar proper motions) in the Galactic center. Here we report on the detection of at least 25 H_2_O masers and 18 SiO masers associated with stars within 2{deg} and 15' of Sgr A*, respectively. This survey has more than doubled the total number of proper motion candidates to at least about 50 stellar objects.

Keywords

1. interstellar-masers
2. infrared-sources
3. spectroscopy
4. radio-astronomy

Bibliographic source Bibcode

2002A&A...391..967S

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Document Object Identifer DOI

doi:10.26093/cds/vizier.33910967

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