A variability study of the H2CO 6cm maser in IRAS 18566+0408

Details A variability study of the H2CO 6cm maser in IRAS 18566+0408 A variability study of the H2CO 6cm maser in IRAS 18566+0408

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..242..140a&link_type=abstract

Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p.

Astronomy and Astrophysics

Astrophysics

Masers, Stars: Formation, Ism: Molecules, Radio Lines: Ism

Scientific paper

We report the first detection of a short-duration (<3 months) outburst of an H2CO 6cm maser based on multi-epoch observations of IRAS18566+0408 obtained with Arecibo, the Green Bank Telescope, and the Very Large Array. The H2CO maser was observed nine times between 2002 and 2005. In May 2006 we began a two-year program of monthly monitoring with the Arecibo Telescope. The H2CO maser in IRAS18566+0408 is coincident with a young massive stellar object and the line profile of the maser suggests that the H2CO emission originates from two different regions, perhaps associated with the kinematics of a circumstellar disk.

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