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Characteristics of Long-Term Spot Activity on Several Late-Spectral-Type Stars
AbstractWe present our analysis of many-year photometry for several dozens of chromospherically active stars that exhibit solar-type activity (from...
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UV photometry of spotted stars in the horizontal branch of the globular cluster NGC 2808 using AstroSat
A recent study of hot (20,000 to 30,000 K) extreme horizontal branch (EHB) stars in globular clusters (GCs) has led to the discovery of their...
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Magnetic Fields of New CP Stars Discovered with Kepler Mission Data
AbstractThe paper presents the first results of the ongoing spectropolarimetric monitoring of magnetic fields of stars, whose chemically peculiar...
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Magnetic Field Structures of Chemically Peculiar Stars. II. HD98088, HD182180, HD221218, HD318107
Based on published data on the magnitudes of the magnetic field, models are constructed of several magnetic stars of different types of peculiarity...
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Mass Computations of the Brightness of Stars in an Arbitrary Spectral Band
AbstractThe problem of calculating the brightness of an array of stars in an arbitrary photometric band, which is not the standard band of...
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Magnetic Fields of Chemically Peculiar and Related Stars. VIII. Main Results of 2021 and Near-Future Prospects
Abstract —We present a review of the papers written in the research field of stellar magnetism in 2021. The instruments, observation, and data...
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Correction to: UV photometry of spotted stars in the horizontal branch of the globular cluster NGC 2808 using AstroSat
A Correction to this paper has been published: 10.1007/s12036-020-09679-y
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The Birth, Life, and Secrets of Stars: Unravelling the Mysteries of Cosmic Beacons
The motion of objects in the solar system takes place against the backdrop of the ‘fixed stars’—points of light that maintain their relative position...
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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...
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Preparing for the VLTI: A Search for Pre-Main Sequence Spectroscopic Binaries
The most fundamental parameter of a star is its mass. For low mass pre-main sequence (pms) stars this parameter is practically always derived by...
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Close Binary Stars. VI: New Research Methods
AbstractA review of new methods for studying close binary systems (CBSs) is presented. Methods for determining the masses of relativistic objects...
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Differential Rotation of Stars in Spectral Class A
Published data indicate a substantial increase in the differential rotation parameter ∆Ω of stars hotter than 6700 K. By analyzing the shape of the...
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The Activity of Stars with Planetary Systems and Its Impact on the Loss of Atmosphere by Hot Exoplanets
AbstractThe review presents the results of a wide range of studies on modeling the atmospheres and shells of exoplanets and studying the processes...
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On the Properties of Coronal Mass Ejections on Late-Type Stars
AbstractThe technique of coronal mass ejection (CME) mass estimates from the energy of stellar flares has been applied to the data on the flare...
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Weighing stars from birth to death: mass determination methods across the HRD
The mass of a star is the most fundamental parameter for its structure, evolution, and final fate. It is particularly important for any kind of...
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Activity Cycles of the Star FK Com
AbstractWe present the results of our photometric observations of the chromospherically active star FK Com (prototype of its group of stars) acquired...
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Magnetic Fields of Chemically Peculiar and Related Stars. VI. Main Results of 2019 and Near-Future Prospects
Abstract —The paper provides a review of important results of studies of chemically peculiar and related magnetic stars. More than 90 papers published...
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A plague of magnetic spots among the hot stars of globular clusters
For more than six decades, the quest to understand the formation of hot (about 20,000−30,000 K) extreme horizontal branch (EHB) stars in Galactic...
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Dedication to Mariy Anatolyevich Svechnikov
AbstractThe paper is dedicated to the memory and scientific heritage of Mariy Anatolyevich Svechnikov, an outstanding researcher and teacher, founder...
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Stellar Magnetic Fields
Stellar magnetic fields are directly detected or inferred across the whole Hertzsprung--Russell Diagram. Attention in this chapter is concentrated on...