From: Amara Graps (amara@amara.com)
Date: Sat Jan 05 2002 - 12:15:47 MST
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Astrophysics, abstract
astro-ph/0107351
From: Hans Zinnecker <hzinnecker@aip.de>
Date: Wed, 18 Jul 2001 19:55:48 GMT (8kb)
A free-floating planet population in the Galaxy?
Authors: Hans Zinnecker (Astrophysikalisches Institut Potsdam)
Comments: 4 pages, 0 figures, to be published in Microlensing 2000: A New
Era of Microlensing Astrophysics, ASP conference Series, Vol. 000, 2001,
J.W. Menzies and P.D. Sackett, eds
Most young low-mass stars are born as binary systems, and
circumstellar disks have recently been observed around the
individual components of proto-binary systems (e.g. L1551-IRS5).
Thus planets and planetary systems are likely to form around the
individual stellar components in sufficiently wide binary systems.
However, a good fraction of planets born in binary systems will in
the long run be subject to ejection due to gravitational
perturbations. Therefore, we expect that there should exist a
free-floating population of Jupiter-like or even Earth-like
planets in interstellar space. There is hope to detect the
free-floating Jupiters through gravitational microlensing
observations towards the Galactic Bulge, especially with
large-format detectors in the near-infrared (e.g. with VISTA or
NGST), on timescales of a few days.
Paper: Source (8kb), PostScript, or Other formats
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Amara Graps | Max-Planck-Institut fuer Kernphysik
Interplanetary Dust Group | Saupfercheckweg 1
+49-6221-516-543 | 69117 Heidelberg, GERMANY
Amara.Graps@mpi-hd.mpg.de * http://galileo.mpi-hd.mpg.de/~graps
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"Never fight an inanimate object." - P. J. O'Rourke
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