Results 1 to 10 of about 921 (218)
An “A star” on an M star during a flare within a flare [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractM dwarfs produce explosive flare emission in the near-UV and optical continuum, and the mechanism responsible for this phenomenon is not well-understood. We present a near-UV/optical flare spectrum from the rise phase of a secondary flare, which occurred during the decay of a much larger flare.
Kowalski, Adam F. +4 more
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Spectral Observations of Flare Stars [PDF]
Symposium - International Astronomical Union, 1990 Spectral observations of 6 flare stars in the Pleiades cluster are carried out which occupy different positions on the Hertzsprung-Russell diagram relative to the main sequence: above and below it. The spectral indices which are sensible to luminosity or temperature of the star photosphere are determined.
L.V. Mirzoyan +2 more
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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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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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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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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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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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Symposium - International Astronomical Union, 1994 The important role of flare stars (UV Ceti type variables) in astrophysics is due to the fact that the flare activity is not only typical for red stars with small masses but is a necessary stage during their evolution.
M. Tsvetkov, M. Chukova, K. Tsvetkova
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Arthritis Care &Research, EarlyView.Objective The objective of this article is to identify perceptions of patients with systemic lupus erythematosus (SLE) regarding artificial intelligence (AI)–based online symptom assessment tools, and the potential of these tools to address diagnostic barriers.
Olivia A. Stein +7 more
wiley +1 more source