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UrduAt the 244th American Astronomical Society meeting, researchers presented groundbreaking findings on planet formation in circumstellar disks around young binary stars
Tag: binary stars
Desde Chile descubren causas de la diversidad estelar en estrellas binarias
Utilizando el telescopio de Gemini Sur, ubicado en la Región de Coquimbo en Chile, un equipo de astrónomos confirmó por primera vez que las diferencias observadas en las estrellas binarias se deben a las diferencias químicas en la nube de material estelar de la cual se formaron. Los resultados ayudan a explicar por qué las estrellas que nacieron de la misma nube molecular pueden tener una composición química distinta y sistemas planetarios tan diferentes, además de plantear nuevos retos a los modelos actuales de formación estelar y planetaria.
Gemini South Reveals Origin of Unexpected Differences in Giant Binary Stars
Using the Gemini South telescope a team of astronomers have confirmed for the first time that differences in binary stars’ composition can originate from chemical variations in the cloud of stellar material from which they formed.
NASA’s Hubble Finds that Aging Brown Dwarfs Grow Lonely
A Hubble telescope survey has found that brown dwarfs—objects smaller than stars but bigger than planets—live a lonely life as they age. Over time they lose the companion brown dwarf that was born alongside them and the objects drift their separate ways.
Direct evidence for modified gravity at low acceleration from Gaia observations of wide binary stars
A new study reports conclusive evidence for the breakdown of standard gravity in the low acceleration limit from a verifiable analysis of the orbital motions of long-period, widely separated, binary stars, usually referred to as wide binaries in astronomy and astrophysics.
The seven-year photobomb: Distant star’s dimming was likely a ‘dusty’ companion getting in the way, astronomers say
Astronomers discovered that the star Gaia17bpp gradually brightened over a 2 1/2-year period. But follow-up analyses revealed that the star itself wasn’t changing. Instead, it’s likely part of a rare type of binary system. Its apparent brightening was the end of a years-long eclipse by an unusual, “dusty” stellar companion.
Study: Without more data, a black hole’s origins can be “spun” in any direction
Clues to a black hole’s origins can be found in the way it spins. This is especially true for binaries, in which two black holes circle close together before merging.