[Chaos-l] First visible light image of planet orbiting another star
D Gary Grady
DGaryGrady at verizon.net
Fri Nov 14 00:41:56 EST 2008
A tiny dot in an astronomical photo is apparently a three-Jupiter-mass
planet orbiting the star Fomalhaut at nearly 14 times the Sun-Jupiter
distance. Fomalhaut is one of the closest stars to Earth, just 25
light-years away. The planet has been imaged multiple times with slight
visible proper motion between exposures, showing that it is in fact in
orbit:
http://apod.nasa.gov/apod/ap081114.html
In addition, there is reason to believe that unlike previous such
claimed images of exoplanets, this object probably is a big planet
rather than a brown dwarf "failed" star.
And there are three *more* extrasolar planets imaged by another team.
All this is covered here:
http://www.skyandtelescope.com/news/home/34395079.html
AAAS members can read a paper here:
http://www.sciencemag.org/cgi/rapidpdf/1167569v1.pdf
(In passing, on a completely different subject, I've discovered AAAS
members receive a large enough discount on Apple purchases that if you
plan to buy a Mac laptop you actually save money by joining AAAS. Since
I was already a member, I've been kicking myhself for not learning about
this before I bought my MacBook PRo...)
--
D Gary Grady
Durham NC USA
DGaryGrady at verizon.net
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