VLT finds hottest and many large touching double star
The double star complement VFTS 352 is located about 160 000 light-years divided in a Tarantula Nebula . This conspicuous segment is a many active hothouse of new stars in a circuitously Universe and new observations from ESO’s VLT  have suggested that this span of immature stars is among a many impassioned and strangest nonetheless found.
VFTS 352 is stoical of dual really hot, splendid and large stars that circuit any other in small some-more than a day. The centres of a stars are distant by usually 12 million kilometres . In fact, a stars are so tighten that their surfaces overlie and a overpass has shaped between them. VFTS 352 is not usually a many large famous in this little category of “overcontact binaries” — it has a total mass of about 57 times that of a Sun — though it also contains a hottest components — with aspect temperatures above 40 000 degrees Celsius.
Extreme stars like a dual components of VFTS 352, play a pivotal purpose in a expansion of galaxies and are suspicion to be a categorical producers of elements such as oxygen. Such double stars are also related to outlandish poise such as that shown by “vampire stars”, where a smaller messenger star sucks matter from a aspect of a incomparable neighbour (eso1230).
In a box of VFTS 352, however, both stars in a complement are of roughly matching size. Material is, therefore, not sucked from one to another, though instead competence be common . The member stars of VFTS 352 are estimated to be pity about 30 per cent of their material.
Such a complement is really singular since this proviso in a life of a stars is short, creation it formidable to locate them in a act. Because a stars are so tighten together, astronomers consider that clever tidal army lead to extended blending of a element in a stellar interiors.
“The VFTS 352 is a best box nonetheless found for a prohibited and large double star that competence uncover this kind of inner mixing,” explains lead author Leonardo A. Almeida of a University of São Paulo, Brazil. “As such it’s a fascinating and critical discovery.”
Astronomers envision that VFTS 352 will face a cataclysmic predestine in one of dual ways. The initial intensity outcome is a merging of a dual stars, that would expected furnish a fast rotating, and presumably magnetic, enormous singular star. “If it keeps spinning fast it competence finish a life in one of a many enterprising explosions in a Universe, famous as a long-duration gamma-ray burst,” says a lead scientist of a project, Hugues Sana, of a University of Leuven in Belgium .
The second probability is explained by a lead fanciful astrophysicist in a team, Selma de Mink of University of Amsterdam: “If a stars are churned good enough, they both sojourn compress and a VFTS 352 complement competence equivocate merging. This would lead a objects down a new evolutionary trail that is totally opposite from classical stellar expansion predictions. In a box of VFTS 352, a components would expected finish their lives in supernova explosions, combining a tighten binary complement of black holes. Such a conspicuous intent would be an heated source of gravitational waves.”
Proving a existence of this second evolutionary trail  would be an observational breakthrough in a margin of stellar astrophysics. But, regardless of how VFTS 352 meets a demise, this complement has already supposing astronomers with profitable new insights into a feeble accepted evolutionary processes of large overcontact binary star systems.