News tagged with radial velocities

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Lightest exoplanet imaged so far?

(Phys.org) —A team of astronomers using ESO's Very Large Telescope has imaged a faint object moving near a bright star. With an estimated mass of four to five times that of Jupiter, it would be the least ...

Jun 03, 2013
4.8 / 5 (5) 0 | with audio podcast

New technique measures mass of exoplanets

To date, scientists have confirmed the existence of more than 900 exoplanets circulating outside our solar system. To determine if any of these far-off worlds are habitable requires knowing an exoplanet's ...

Dec 19, 2013
5 / 5 (21) 0 | with audio podcast

32 New Exoplanets Found (w/ Video)

(PhysOrg.com) -- Today, at an international ESO/CAUP exoplanet conference in Porto, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6-metre ...

Oct 19, 2009
4.9 / 5 (28) 6

The origin and maintenance of a retrograde exoplanet

Astronomers have used the Subaru Telescope to show that the HAT-P-7 planetary system, which is about 1040 light years from Earth in the constellation Cygnus, includes at least two giant planets and one companion ...

Jan 25, 2013
5 / 5 (4) 2 | with audio podcast

50 new exoplanets discovered by HARPS

Astronomers using ESO's world-leading exoplanet hunter HARPS have today announced a rich haul of more than 50 new exoplanets, including 16 super-Earths, one of which orbits at the edge of the habitable zone ...

Sep 12, 2011
4.8 / 5 (17) 14 | with audio podcast

Exoplanets Clue to Sun's Curious Chemistry

(PhysOrg.com) -- A ground-breaking census of 500 stars, 70 of which are known to host planets, has successfully linked the long-standing "lithium mystery" observed in the Sun to the presence of planetary systems. ...

Nov 11, 2009
4.6 / 5 (21) 15