Publication Details:
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Աստղաֆիզիկա = Астрофизика = Astrophysics
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Title:
Активность звезды TIC 88785435 и потеря массы атмосферы ее планеты
Other title:
Activity of TIC 88785435 and mass loss of its planet atmosphere
Creator:
Contributor(s):
Գլխավոր խմբ․՝ Վ․ Հ․ Համբարձումյան (1965-1987) ; Ա․ Գ․ Նիկողոսյան (2018-2024) ; Գ․ Տ․ Տեր-Ղազարյան (2025-) ; Լ․ Վ․ Միրզոյան (1988-1999) ; Դ․ Մ․ Սեդրակյան (2000-2017)
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Uncontrolled Keywords:
звезды ; активность ; пятна ; фотометрия ; переменность ; планетные системы
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Abstract:
We investigate the activity of a young K7V star TIC 88785435 and estimate the mass loss from the atmosphere of its exoplanet. TIC 88785435 is a member of the Lup subgroup with an age of 9.9-17.7 million years. The age of the star itself is 16.0±1.6 million years. According to the analysis of the observations of the TESS mission we estimate the spottedness of the star's surface, which is equal to 6.3 and 10.5% of the surface area of the star, or in absolute values 43000 and 71300 MSH for TESS observations in sectors 38 and 65 respectively. For the most reliable flare, the energy emitted in the flare was measured as 1.031033 erg. calculations performed using the energy-limited atmospheric loss model for TIC 88785435 b, it was found that depending on the star's activity level the amount of atmospheric mass loss from the exoplanet can be in the range of 2.7 108 g/s - 1.7 109 g/s.
Place of publishing:
Երևան