The disappearance of the 1667-MHz OH maser in IRAS 17436+5003 (HD 161796)

Details The disappearance of the 1667-MHz OH maser in IRAS 17436+5003 (HD 161796) The disappearance of the 1667-MHz OH maser in IRAS 17436+5003 (HD 161796)

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnras.346l..46b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 346, Issue 3, pp. L46-L50.

Astronomy and Astrophysics

Astronomy

2

Masers, Stars: Agb And Post-Agb, Circumstellar Matter, Stars: Individual: Iras 17436+5003, Radio Lines: Stars

Scientific paper

We report the diminution of the 1667-MHz OH maser in the post-asymptotic giant branch star IRAS 17436+5003, by a factor of >~17 over a period of <~12 yr, from observations with MERLIN. This circumstellar maser was detected by Likkel in 1987, at the 13σ level of her observations with the Green Bank Telescope. We discuss a number of possible reasons for this phenomenon and conclude that it is most likely due to turbulence arising from interacting stellar winds.

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