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November 14, 2008

Astronomers claim first snaps of planets beyond the Solar System

From Nature:

Exo2 Two teams of astronomers are independently claiming to have the first ever images of planets in orbit around a star other than the Sun — with pictures from one team showing three planet-like bodies orbiting a distant star. Using the Keck and Gemini telescopes in Hawaii, one team took infrared images of three objects, each 5-13 times the mass of Jupiter, in orbit around HR 8799, a star 130 light years from Earth in the constellation Pegasus.

The other team used the Hubble Space Telescope to take photographs of a potential planet that's no bigger than three Jupiters2. It circles Fomalhaut, a star 25 light years away from Earth in the constellation of Piscis Austrinus, completing one orbit every 872 years. The object is roughly 119 times further away from its star than Earth is from the Sun, and is located at the inner edge of a debris disk that it appears to have sculpted into a sharp smooth ring by pulling in stray dust as it orbits. Astronomers have been hunting for direct evidence of planets orbiting a star outside the Solar System for nearly a decade. More than 300 extrasolar planets, or exoplanets, have been discovered so far but these have been found using indirect methods — for example, by detecting the way a star wobbles as planets orbit them rather than using images.

More here.

Posted by Azra Raza at 06:06 AM | Permalink

Comments

The detection of extrasolar planets seems to me like one of those things that people should have seen coming twenty years ago but didn't. I think specialists in the field had a lot of hopes, but people kept claiming to see them and have their claims debunked. It doesn't show up in science fiction at all as far as I can tell, but it's tremendously exciting and great science.

Posted by: Hektor Bim | Nov 14, 2008 3:41:00 PM

Incredible! This is a STUNNING achievement, if true. Unthinkable even 10years ago. The accumulation of knowledge just keeps gaining pace. Our exploration of the universe has just begun!!!

Posted by: MattInOz | Nov 15, 2008 9:08:41 AM

For a picture of the Fomalhaut debris ring and its planet here's a link.

http://www.jpl.nasa.gov/news/news.cfm?release=2008-211

Posted by: PeteChapman | Nov 16, 2008 5:50:51 AM

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