These 'ultracool' stars have such low temperatures that they only emit infrared light.
The system is called LP 413-53AB, and it was identified by researchers from Northwestern University and the University of California San Diego. The two dwarf stars are in a class known as ‘ultracool’—theirrendering them invisible to our eyes astrophysicist at Northwestern University, led the study and presented the findings at the American Astronomical Society meeting in Seattle this week.. “In principle, we knew these systems should exist, but no such systems had been identified yet.
locked together by each other’s gravity so tightly, the light emitted from the system appeared to the researchers as one star,low in mass and orbit around each other in justHsu and his colleagues decided to observe the system directly using the W.M. Keck Observatory in Hawaii.
All you need to do is sign up with your email and boom: credit for your preorder on a new Samsung device.“When we were making this measurement, we could see things changing over a couple of minutes of observation,” Adam Burgasser, an astrophysics professor at UC San Diego and a collaborator on this research, said in the release
. “Most binaries we follow have orbit periods of years. So, you get a measurement every few months. Then, after a while, you can piece together the puzzle. With this system, we could see the spectral lines moving apart in real time. It’s amazing to see something happen in the universe on a human time scale.”ound that the distance between the two stars is about 1% of the distance betweenstars could have migrated toward each other over their lifespans.
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