Results 21 to 30 of about 465,086 (299)
GCVS problems with flare stars [PDF]
International Astronomical Union Colloquium, 1995 The astrometric aspect of cataloguing variable stars becomes more and more important. During the past thirty years there has been approximately an three-fold increase of the number of known variables; now the rate of new discoveries becomes extremely high, and we may expect a new twofold increase in a couple of years due to discoveries made with space ...
Elena V. Kazarovets, Nikolai N. Samus
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Flare stars across the H-R diagram [PDF]
, 2016 Flare stars appear to be as common among the hottest stars as among the coolest. Starspots, which are closely associated with flares, are likewise common among stars of all spectral types.
Balona, Luis A.
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International Astronomical Union Colloquium, 1990 This review concerns rapid variability, on time-scales of a few hours or less, occurring on T Tauri stars (TTS). There are several recent reviews on observed properties of TTS (e.g. Appenzeller & Mundt 1989, Bertout 1989, Gahm 1990a, Kuhi & Cram 1989), some with more emphasis on “flare-like” activity (Feigelson et al.
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Flare Activity and Cluster Membership Probability of Flare Stars [PDF]
International Astronomical Union Colloquium, 1995 Mirzoyan (1976) showed that the concentration of flare stars around the center of the Pleiades cluster (Alcyone) was the same, irrespective of their proper motions. At that time, however, proper motions of only a few flare stars were known. The result was confirmed on the basis of more extensive observational material (Chavushian 1979, Mirzoyan 1983 ...
L. V. Mirzoyan +2 more
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Flare Activity and Magnetic Feature Analysis of the Flare Stars II: Sub-Giant Branch [PDF]
, 2021 We present an investigation of the magnetic activity and flare characteristics of the sub-giant stars mostly from F and G spectral types and compare the results with the main-sequence (MS) stars. The light curve of 352 stars on the sub-giant branch (SGB)
He, Han +7 more
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Photometric Research of Pre-flare and Extra-flare Activity of Flare Stars [PDF]
International Astronomical Union Colloquium, 1995 Preliminary results of a photometric search for non-flare activity of the flare star EV Lac during June-August 1994 are presented. These observations are part of the long-term project entitled “Investigation of pre-flare processes on flare stars” being carried out at the Observatory of the Jordan Valley Regional College since July 1994. The project was
G. Roizman, L. Pustil'nik, D. Pundak
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Tidal Disruption Events from Eccentric Orbits and Lessons Learned from the Noteworthy ASASSN-14ko
The Astrophysical Journal, 2023 Stars grazing supermassive black holes (SMBHs) on bound orbits may survive tidal disruption, causing periodic flares. Inspired by the recent discovery of the periodic nuclear transient ASASSN-14ko, a promising candidate for a repeating tidal disruption ...
Chang Liu +7 more
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Flare Stars in Star Clusters and Associations [PDF]
Symposium - International Astronomical Union, 1975 The study of stellar evolution can be undertaken either from a purely theoretical point of view or from a more observational approach. The present standpoint is the second one. It starts from the concepts of stellar evolution in associations and open clusters and from stellar flare activity.
V. A. Ambartsumian, L. V. Mirzoyan
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The Astrophysical Journal, 2023 We present a multiwavelength study of stellar flares on primarily G-type stars using overlapping time domain surveys in the near-ultraviolet (NUV) and optical regimes. The NUV (the Galaxy Evolution Explorer; GALEX) and optical (Kepler) wavelength domains
C. E. Brasseur +3 more
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Flare stars at radio wavelengths [PDF]
Symposium - International Astronomical Union, 1990 The radio emission from dMe flare stars is discussed using Very Large Array and Arecibo observations as examples. Active flare stars emit weak, unpolarized, quiescent radio radiation that may be always present. Although thermal bremsstrahlung and/or thermal gyroresonance radiation account for the slowly-varying, quiescent radio radiation of solar ...
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