facebook
twitter
rss
account
search
search
 

Scientists delve into secrets of planets orbiting twin suns

Jan. 31, 2014 at 5:41 PM   |   Comments

BRISTOL, England, Jan. 31 (UPI) -- British astronomers say they've uncovered secrets of a planet orbiting twin suns, like Luke Skywalker's fictional home planet Tatooine in "Star Wars."

The planet Kepler-34(AB)b, discovered by the Kepler space telescope, is a circumbinary planet, so-called because its orbit encompasses two stars.

A binary star system is possibly the most extreme environment in which a planet could form, researchers at the University of Bristol said, since powerful gravitational perturbations from the two stars on the rocky building blocks of planets should lead to destructive collisions that grind down the material.

So, how can the presence of such planets be explained?

Zoe Leinhardt and colleagues from Bristol's School of Physics, conducting computer simulations of the early stages of planet formation around binary stars, found the majority of these planets must have formed much further away from the central binary stars and then migrated to their current location.

"Our simulations show that the circumbinary disk is a hostile environment even for large, gravitationally strong objects," Leinhardt said. "Taking into account data on collisions as well as the physical growth rate of planets, we found that Kepler 34(AB)b would have struggled to grow where we find it now."

Their results suggest all of the currently known circumbinary planets likely also migrated significantly from their formation locations, the researchers said.

"Circumbinary planets have captured the imagination of many science-fiction writers and film-makers -- our research shows just how remarkable such planets are," lead study author Stefan Lines said. "Understanding more about where they form will assist future exoplanet discovery missions in the hunt for earth-like planets in binary star systems."

© 2014 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
Massive sunspot sending violent flares toward Earth Massive sunspot sending violent flares toward Earth
2
Google exec breaks skydive record with dive from near-space Google exec breaks skydive record with dive from near-space
3
Powerful new microscope sees cell division in real time Powerful new microscope sees cell division in real time
4
Coal-rich Poland wants concessions in EU climate deal Coal-rich Poland wants concessions in EU climate deal
5
Stone tools reveal Ice Age settlement in the Andes Stone tools reveal Ice Age settlement in the Andes
Trending News
Around the Web
x
Feedback