47 Result(s)
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Article
Mass Loss from the Atmosphere of the Planet TOI-1442 c
The properties of the planetary system TOI-1422, in which two planets of a neptune type orbit around a low-activity star of solar type with an age of about 5 billion years, are examined. We have previously ana...
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Article
Activity of K-Dwarf HIP 113103 and Atmospheric Losses of Its Exoplanets
We present the results of analyzing the activity manifestations of the K3 V spectral type dwarf HIP 113103 (HD 216530) and estimate the matter loss from the atmospheres of two of its planets. HIP 113103 can be...
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Article
Activity of the Star TOI-784 and Loss of Atmospheric Mass by Its Planet
The properties of the planetary system TOI-784, in which an earth-like planet orbits a low-activity star of solar type, are examined. Archived V-band measurements of the brightness of TOI-784 in the ASAS 4 dat...
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Article
Activity of M-dwarf L 98-59 and Atmospheric Escape of its Exoplanets
A study of the activity of a bright M-dwarf L 98-59, located at a distance of 10.6 pc from Earth is reported. The star has a multiplanetary system, where one of the planets, L 98-59 b, is a rocky planet with a...
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Article
Mass Loss from the Atmosphere of the Planet WASP-193 b
Results are presented from an analysis of the manifestations of activity of the star WASP-193 of spectral class F9 with a super-neptune-type planet. The gaseous giant WASP-193 b with a mass 0.13 times Jupiter’...
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Article
Activity of the Young Star EPIC 204376071 from the Upper SCO Association
Based on observations from the K2 mission of the Kepler Space Telescope a study is made of the activity of EPIC 204376071, a young object in the Upper SCO association with an age of 11±3 million years whose li...
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Article
Activity of the Star Gl 414A with Two Planets and its Effect on the Loss of Mass of the Atmosphere of the Planet Gl 414A b
Results are presented from a study of manifestations of the activity of the dwarf Gl 414A of spectral class K7 with two planets, one of which (the planet Gl 414A b) with an eccentricity e=0.45 was found to be ...
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Article
Analysis of the Activity of 11 K-type Dwarfs with Planets in the Habitable Zone
We report the results of a study of spot activity manifestations in 11 K-type dwarfs with established planets in the habitable zone according to the data from the Kepler space telescope archive acquired during...
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Article
HD 4915 at the Beginning of Maunder Minimum of Activity
Based on the available photometric data spanning almost 8000 days (21.9 years) of observations of a bright G5 V dwarf, solar-type star HD 4915, we carried out a study of the manifestations of its activity, pro...
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Article
Activity of ET Dra—a Star of FK Com Type
Abstract—We present new results of the study of ET Dra—a star of the FK Com type—based on observations carried out at the Zvenigorod Observatory of the Institute of Astronomy of RAS with the help of the FRAM-ORM ...
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Article
Activity of the Young Star TOI 837 with an Exoplanet
Abstract—Based on high-precision data from the archive of the TESS space mission, a study was made of the photometric brightness variability of TOI 837—a young star with an exoplanet, a member of the southern sky...
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Article
Spottedness Activity of the Young Star HIP 94235 from the Moving Group AB Doradus
Based on high-precision data from the archive of the TESS space mission, a study is made of the photometric variability of the brightness of HIP 94235, a bright star belonging to the 120 million years old movi...
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Article
Activity of Stars with Planets in the Habitable Zone
Based on data on stars with planets located in the habitable zone, a study is made of manifestations of their activity. Light curves obtained during observations in the Q3 set with the Kepler Space Telescope f...
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Article
KIC 5428626—New FK Com-Type Star Candidate
Abstract—According to the results of analysis of the Kepler space telescope photometric observations, we studied a star KIC 5428626, which was previously noted as a rapidly rotating giant with a flare activity. W...
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Article
Spottedness Activity of the Young Star TOI 1227 with a Planetary System from Lower Centaurus Crux OB Association (Musca)
Based on high-precision data from the archive of the TESS space mission, a study of the photometric variability of the brightness of TOI 1227, a young member of the Musca group with an age of 11 million years....
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Article
The Activity of Stars with Planetary Systems and Its Impact on the Loss of Atmosphere by Hot Exoplanets
The review presents the results of a wide range of studies on modeling the atmospheres and shells of exoplanets and studying the processes associated with the activity of the parent star, performed at the Inst...
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Article
KIC 7732964 – A Possible Candidate FK Com-Type Star
This article is a brief survey of our previous work devoted to searching for candidate type FK Com giant stars and an analysis of data for yet another new candidate, KIC 7732964. Establishing that KIC 7732964 ...
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Article
Activity of Two Young Stars of Solar Type with Planetary Systems from the Ursa Major Moving Group of Stars and the Stream Psc-Eri
High precision data from the archive of the TESS space mission are used as the basis of a study of the photometric variability of two young analogs of the Sun with planetary systems: the stars HD 63433 (TOI 17...
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Article
On the Activity of Stars (Including Those with Planetary Systems) from Observations of the Kepler and K2 Missions
Abstract—In the first part of our work, we present the results of a comparative analysis of photometric observations of stars using the Kepler mission and its continuation K2. The comparability of the data was es...
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Article
Conceptual Design of the Chinese-Russian On-Orbit-Assembling Space Telescope (OAST)
Astronomical space telescopes with large apertures of various spectral ranges have become one of the main tools of exploring the Universe. Conventional technologies do not allow increasing the space telescope ...
