SETI public: An Infrared Coronagraphic Survey for Substellar Companions

• Previous message: LARRY KLAES: "SETI public: A star system to investigate - from a 1990 SETI incident"

Paper: astro-ph/0506358
Date: Wed, 15 Jun 2005 22:32:01 GMT (335kb)

Title: An Infrared Coronagraphic Survey for Substellar Companions

Authors: P.Lowrance (SSC), E. E. Becklin (UCLA), G. Schneider (UofA), D.
Kirkpatrick (IPAC), A.Weinberger (Carnegie), B. Zuckerman (UCLA), C.Dumas
(ESO), J.L.Beuzit (Grenoble), P.Plait (Sonoma State), E.Malumuth (Goddard),
S.Heap (Goddard), R.Terrile (JPL), D. Hines (SSI)
Comments: 11 figures, accepted by AJ
\\
We have used the F160W filter (1.4-1.8 um) and the coronagraph on the
Near-InfraRed Camera and Multi-Object Spectrometer (NICMOS) on the Hubble
Space
Telescope (HST) to survey 45 single stars with a median age of 0.15 Gyr, an
average distance of 30 pc, and an average H-magnitude of 7 mag. For the
median
age we were capable of detecting a 30 M_Jup companion at separations between
15
and 200 AU. A 5 M_Jup object could have been detected at 30 AU around 36% of
our primaries. For several of our targets that were less than 30 Myr old,
the
lower mass limit was as low as a Jupiter mass, well into the high mass
planet
region. Results of the entire survey include the proper motion verification
of
five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B) and
one
possible brown dwarf binary (Gl 577B/C).

\\ ( http://arXiv.org/abs/astro-ph/0506358 , 335kb)

• Previous message: LARRY KLAES: "SETI public: A star system to investigate - from a 1990 SETI incident"

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