Quantcast
Last updated on April 17, 2014 at 1:21 EDT

Latest Doppler spectroscopy Stories

New Exoplanet Pisces
2014-01-10 07:43:23

redOrbit Staff & Wire Reports - Your Universe Online A team of astronomers led by Stephen Kane of San Francisco State University (SFSU) has discovered a new giant planet that could have twice the mass of Jupiter. The new planet is located in a star system within the Pisces constellation, and could help scientists gain new insight into how extrasolar planets, or exoplanets, are formed. This new star system contains just one star, as do three other systems containing extrasolar...

New Technique Measures Exoplanet Composition
2014-01-09 09:59:15

redOrbit Staff & Wire Reports - Your Universe Online Scientists have successfully measured the masses of approximately 60 exoplanets discovered by the Kepler space telescope – research that will help them determine the composition of these planets and ultimately whether or not they are capable of supporting life. Their findings, which were presented Monday during the 223rd annual meeting of the American Astronomical Society (AAS) in Washington, DC, covered planets located outside...

003fdf3028f728ff903703430e8412e31
2011-04-18 06:30:00

Detecting exoplanets that orbit at large distances from their star remains a challenge for planet hunters.  Now, scientists at the University of Leicester have shown that emissions from the radio aurora of planets like Jupiter should be detectable by radio telescopes such as LOFAR, which will be completed later this year. Dr Jonathan Nichols will present results at the RAS National Astronomy Meeting in Llandudno, Wales, on Monday 18th April. "This is the first study to predict the radio...

a3c008aea36739b0716aa73168c54ebe1
2010-11-18 13:55:00

Galactic cannibalism brings an exoplanet of extragalactic origin within astronomers' reach An exoplanet orbiting a star that entered our Milky Way from another galaxy has been detected by a European team of astronomers using the MPG/ESO 2.2-meter telescope at ESO's La Silla Observatory in Chile. The Jupiter-like planet is particularly unusual, as it is orbiting a star nearing the end of its life and could be about to be engulfed by it, giving tantalizing clues about the fate of our own...

13ac4a62467fd04b4aa7988ab6d7fc8f
2010-07-09 07:20:00

A team of astronomers from Germany, Bulgaria and Poland have used a completely new technique to find an exotic extrasolar planet. The same approach is sensitive enough to find planets as small as the Earth in orbit around other stars. The group, led by Dr Gracjan Maciejewski of Jena University in Germany, used Transit Timing Variation to detect a planet with 15 times the mass of the Earth in the system WASP-3, 700 light years from the Sun in the constellation of Lyra. They publish their work...

c937628226c4233c57024284a0186c021
2010-01-14 09:30:00

Discovery highlights new potential for eventually finding Earth-mass planets Astronomers from the California Institute of Technology (Caltech) and other institutions, using the highly sensitive 10-meter Keck I telescope atop Hawaii's Mauna Kea, have detected an extrasolar planet with a mass just four times that of Earth. The planet, which orbits its parent star HD156668 about once every four days, is the second-smallest world among the more than 400 exoplanets (planets located outside our...

9693ebe878ea4baf61a7f0fa5f635542
2009-06-01 11:25:00

Astronomers have discovered a distant "sun" residing in the constellation Aquila, in what they are calling the smallest known star to host a planet, BBC News reported. Scientists used astrometry "” a method based on measuring small changes in a star's position "” to discover the Jupiter-like exoplanet orbiting the star VB 10. Experts say that VB 10 is one-twelfth the mass of the Sun, yet the star is more massive than its planet and has about the same girth. The upcoming edition...

2009-05-12 13:32:53

U.S. scientists say they have created an astro-comb technology that helps astronomers detect Earth-like planets orbiting distant stars. Researchers at the Harvard-Smithsonian Center for Astrophysics said many extrasolar planets can't be seen directly because the glare of their nearby star is too great. But although a planet might weigh millions of times less than its star, the star will be moved a tiny amount by the gravity interaction with the planet, the researchers said. That motion causes...

964b439075952db6f99cf1e5352c9cad1
2009-05-08 08:35:00

A new way of reading light will sharpen the view of planets around other stars Thanks to the ability of astronomers to detect the presence of extrasolar planets orbiting distant stars, scientists today are able to examine hundreds of solar systems. Now researchers at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass. have created an "astro-comb" to help astronomers detect lighter planets, more like Earth, around distant stars. The Harvard group will present their findings at...

edadef672d9070f98c9248f67e08fc7a1
2009-01-20 09:35:00

Astronomers at the Harvard-Smithsonian Center for Astrophysics have discovered a planet somewhat larger and more massive than Neptune orbiting a star 120 light-years from Earth. While Neptune has a diameter 3.8 times that of Earth and a mass 17 times Earth's, the new world (named HAT-P-11b) is 4.7 times the size of Earth and has 25 Earth masses. HAT-P-11b was discovered because it passes directly in front of (transits) its parent star, thereby blocking about 0.4 percent of the star's light....