The star which is in question seems doubt as BP piscium (BP Sun) to a more our Sun developed, but a disk version of dust and gas surrounding it.A few years light aircraft also long beam system in opposite directions in optical data was. While the hard disk and jets are the characteristics of a very young star, several tracks - including Chandra - hit with new results, BP Sun first appeared not what is his.
Instead astronomers suggested that BP Sun is an age star in his call red giant phase.And, rather than features of his youth, disk and jets are indeed remains a current and catastrophic, interaction, consumes a star in the area or a giant planet of BP Sun,.
If nuclear fuel, stars like the Sun begins to extend and to shed their externas.Nuestro layers Sun, for example, is expected to almost reached swelling or may land includes how it becomes a red giant star.
"" It seems that the Sun BP representing a universe of Star star to eat, or maybe a star food planet, a "Joel Kästner from Rochester Institute of technology, said studying the Chandra led. "It shows either way, that it not always friendly it".
Several pieces of information have led that astronomers to reconsider how could it be old Sun is BP.Firstly, BP Sun away every cloud of formation of stars and no other stars young people in his immediate vicinity.Secondly together with the oldest stars known its atmosphere contains only a small amount of litio.En third party, its surface gravity seems for a young stars too weak and instead coincides with a red giant of an old.
Chandra adds to this historia.Young, low-mass stars brighter than most of the stars in X-rays and the X-ray used observations can be, as a sign of age can an estrella.Chandra to detect X-rays from the Sun BP, but at a pace that is too low to to a star joven.En place measure, BP Sun X-ray emission rate is consistent with the rapid rotation giants.
X-ray emission spectrum is like changes of X-rays with wavelength - is in line with torches that occur on the surface of the star or Exchange the interactions between the star and the hard drive, surrounded by SuSt IP. the magnetic activity of the star was a Dynamo, caused generated by its rapid rotation rights.the can quick turn caused by the process host.
"It seems that the Sun BP were aroused by their food, has," said Jr. of Montez Rudolf (Rudy) co-author, including the Institute of technology in Rochester.
Surface of the star is in the bands that hides visible and near infrared, so that the observation of Chandra first detection at a wavelength of Sun BP represents.
"BP PSC demonstrates the stars like our Sun for thousands of years, can live peacefully, said co-author David Rodriguez UCLA, but if you go, could take a star or planet or two with you."
Although each closure on planet were probably devastated when BP Sun became a star, a second round of the planets could happen education in the disk area, hundreds of millions of years after the first new ronda.Un document using the Spitzer Space Telescope observations potential evidence for a planet giant nearby BP.Esto Sun disk could be reported, a newly formed planets or one that part of the original planetary system was.
"" Like star stars could devour or planet is a hot topic in Astrophysics today,"said Kästner.""We have many important details we have yet to work so that objects really exciting as BP Sun can be found".
These results published in the Astrophysical Journal Letters.Otros co-authors in the study were from Nicolas Grosso of Strasbourg, Ben Zuckerman UCLA, Space Telescope Science Institute's Marshall Perrin, Thierry Forveille laboratory of Astrophysics in Grenoble in France, James Graham, University of California, Berkeley.
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