Английская Википедия:EPIC 204376071
Шаблон:Short description Шаблон:Use dmy dates Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
EPIC 204376071 is an M-type star in the constellation of Scorpius. Parallax measurements by the Gaia space observatory put the star at a distance of about Шаблон:Convert from Earth.[1][2][3] It is likely a member of the Upper Sco association, and is young enough that it has not yet become a main-sequence star.[1]
Unusual light fluctuations of the star, including up to an 80% dimming in brightness (i.e., "single 80% deep occultation of 1-day duration"), were observed by astronomers.[2][3] The unusual dimming was not only extremely deep, but also substantially asymmetric, with an egress about twice as long as the ingress.[4] Nonetheless, such an unusual dimming for EPIC 204376071 is much greater than the 22% dimming observed for Tabby's star.[5][6] Several explanations have been presented to explain the unusual dimming of the EPIC 204376071 star: one, orbiting dust or small particles; or two, a "transient accretion event of dusty material near the corotation radius of the star".[2] The unusual lightcurve of the star is similar to the lightcurve of a candidate exoplanet, KIC 10403228 b, which may have been caused by a "tilted ring system" orbiting the planet. In the case of EPIC 204376071, an orbiting brown dwarf or large planet, with a ring system, could cause a similar lightcurve, according to the researchers.[3]
See also
References
External links
- EPIC Catalog at MAST
- Шаблон:YouTube, up to 80% dimming.
Шаблон:Stars of Scorpius Шаблон:2019 in space Шаблон:Portal bar Шаблон:Authority control Шаблон:Sky
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