Activity of the Star TOI-6255 and Atmospheric Mass Loss from its Planet.

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Bibliographic Details
Title:	Activity of the Star TOI-6255 and Atmospheric Mass Loss from its Planet.
Authors:	Savanov, I. S.¹ (AUTHOR) igs231@mail.ru
Source:	Astrophysics. Dec2024, Vol. 67 Issue 4, p479-486. 8p.
Subjects:	Mass loss (Astrophysics), Habitable planets, Planetary atmospheres, Meteors, Orbits (Astronomy)
Abstract:	We considered the planetary system of TOI-6255, in which an Earth-like planet with an extremely short period of 5.7 hours orbits an M dwarf. Based on archival measurements of TOI-6255 brightness we established rotation-induced light variability and periodic long-term variability of the object. Possible rotation period P of the star falls within the periods of 64–74 days and 78–92 days. The results were compared with those reported in the literature. For two values of logR'HK (-5.15 and -4.66), corresponding to the peaks of the bimodal distribution of this parameter for low-activity and active M dwarfs, the atmospheric mass loss rates of the planet TOI-6255 b were estimated: 4.9 · 109 g/s for logR'HK = - 4.66, and 1.1 · 109 g/s for logR'HK = - 5.15. We determined the promise of TOI-6255 b to become a high priority subject for future research. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	We considered the planetary system of TOI-6255, in which an Earth-like planet with an extremely short period of 5.7 hours orbits an M dwarf. Based on archival measurements of TOI-6255 brightness we established rotation-induced light variability and periodic long-term variability of the object. Possible rotation period P of the star falls within the periods of 64–74 days and 78–92 days. The results were compared with those reported in the literature. For two values of logR'HK (-5.15 and -4.66), corresponding to the peaks of the bimodal distribution of this parameter for low-activity and active M dwarfs, the atmospheric mass loss rates of the planet TOI-6255 b were estimated: 4.9 · 109 g/s for logR'HK = - 4.66, and 1.1 · 109 g/s for logR'HK = - 5.15. We determined the promise of TOI-6255 b to become a high priority subject for future research. [ABSTRACT FROM AUTHOR]
ISSN:	05717256
DOI:	10.1007/s10511-025-09846-5