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From NASA’s Chandra X-ray Observatorywhich is the third major observatory of the US space agency, a team of astronomers led by Dr. Alexander Brown from the University of Colorado in the United States discovered capacitor X-ray emission.
It seems that these rays come from three stars consisting of LTT 1445 . system, where rocky Earth-like exoplanets are found in their habitable zone. The researchers were able to determine that The least massive star, LTT 1445C, is the system’s dominant X-ray emitter.
according to Article published in Sci Newsfocused on American scientists LTT 1445 The hierarchical trio of M dwarfs, 22.5 light-years from Earth, will form a triple system of a binary of brighter stars, called LTT 1445BC, and a faint emission star, called LTT 1445A. LTT 1445A is known to host two rocky exoplanets With similar ground installations: LTT 1445Ab and LTT 1445Ac.
New astronomical challenges
“Understanding what happens to rocky planets and their atmospheres in the habitable zones of low-mass stars is currently One of the greatest astrological challengesthe doctor said Alexander Brown. The planets closest to the mass of the Earth in the orbit of the habitable zones red dwarf stars (M dwarfs), and these are major targets for spectroscopic characterization of the atmosphere in the next decade. “
“M dwarfs are the most common type of star in the Milky Way, and more than 25% of them have planets orbiting in their habitable zones. Theoretical work demonstrates this. Planets around M dwarfs can be habitable Despite their closed-phase orbits, dynamic modeling of transit systems reveals that most systems allow stable orbits of Earth-mass planets long enough for life to develop, that is, longer than 1.7 billion years.
“Although LTT 1445Ab and LTT 1445Ac are unlikely to be habitable, they are still excellent targets for detailed atmospheric studies using Webb. During the flash is observed, X-ray luminosity is only a factor of 10 below the level of saturated activity expected from young, highly energetic stars, although LTT 1445A is believed to be slowly rotating. “
Astronomers have concluded that emissions from LTT 1445A may have interesting effects on the atmospheres of exoplanets that orbit it.
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