Astronomers Discover First Binary-Binary Solar System HD 87646, has Primary Star 12 Percent more massive than Sun

The primary star of the new binary system HD 87646 is twelve percent more massive than our Sun

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Representational Image, Wikimedia

October 20, 2016: Everything that we have known about the formation of our solar system might be wrong, says University of Florida astronomy professor Jian Ge and his postdoc, Bo Ma. Astronomers have discovered a binary-binary solar system.

This discovered solar system, i.e. two mighty companions revolving around one star in close binary. The  binary system is said to have been named HD 87646, mentioned Science Daily.

The Binary system has one ” giant planet” which is called the MARVELS-7a, and a dwarf planet called the MARVELS-7b. The MARVELS- 7a is 12 times the mass of Jupiter while MARVELS-7b is 57 times the mass of Jupiter.

The primary star of the new binary system HD 87646 is twelve percent more massive than our Sun. Click To Tweet

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According to the Science Daily report, astronomers believed that the planets in our solar system have evolved from a collapsed disk dust cloud, with the larger planet in the system move far away from our primary star.

In the new binary HD 87646, astronomers have noticed that these large companions are in close proximity to the primary star, which means that they have collected way more dust and gas than a particular disk dust cloud can provide. It is probable that they are formed  through some other mechanism.

The primary star of the new binary system HD 87646 is twelve percent more massive than our Sun. The secondary star is ten percent less massive than our Sun, yet the two planets have only 22 astronomical units of distance between them, which is equivalent to the distance between our Sun and Uranus. In spite of the close proximity between the two massive bodies, the stability of the system raises a question on how the protoplanetary disks are formed.

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The planet-hunting Doppler instrument W.M. Keck Exoplanet Tracker, or KeckET, which was developed by a team led by Ge at the Sloan Digital Sky Survey telescope at Apache Point Observatory in New Mexico, is atypical that it can simultaneously observe dozens of celestial bodies.

-Prepared by Enakshi Roy Chowdhury of Newsgram. Twitter: @enakshirc58

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