4
Dec 09

First image of cool extrasolar planet candidate around Sun-like star

Source: Max-Planck Institute

Extrasolar planet list keeps on growing. Another planet outside of our Solar System has been directly imaged using the Subaru telescope. Given that the first visible light image of an extrasolar planet was taken a little more than a year ago, the list is growing pretty fast since now we are over ten.

GJ758B-Subaru-2009

Discovery image of GJ 758 B, taken in August
2009 with Subaru HiCIAO in the near infrared.

Credit: MPIA/NAOJ

The newest one, planet GJ 758 B is also the coolest directly imaged planet, with a temperature of 600 Kelvin, and it orbits a star that is much like our own Sun. GJ 758 B has a mass of between 10-40 times that of Jupiter, making it either a really big planet or a small brown dwarf.

Other links:
Astrophysical Journal Letters (arXiv.org)
Universe Today

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