A search for water masers toward extrasolar planets

Details A search for water masers toward extrasolar planets A search for water masers toward extrasolar planets

2006-02-17

arxiv.org/abs/astro-ph/0602390v1

Astronomy and Astrophysics

Astrophysics

accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20052957

Water is the most common triatomic molecule in the universe and the basis of life on Earth. Astrophysical masers have been widely studied in recent years and have been shown to be invaluable probes of the details of the environment in which they are found. Water masers, for instance, are often detected toward low-mass star-forming regions. Doppler radial-velocity surveys have detected about 160 exoplanets. Observations of water masers from exoplanetary systems would give us a new detailed window through which to explore them. We present a search for water masers toward eighteen extrasolar planets using the newly upgraded Australia Telescope Compact Array at 12 mm. A sensitivity of about 25 mJy/beam and an angular resolution of about 10'' were achieved at 22.235 GHz. No maser lines are clearly observed.

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