Results 11 to 20 of about 2,816 (255)
Conference “Modern Stellar Astronomy 2017”
Open Astronomy, 2017 Here we give a brief overview on the eighth annual conference on Modern Stellar Astronomy held in the Ural FederalUniversity (Ekaterinbourg, Russia) in June 2017, to commemorate the 100th birthday of Prof. K. Barkhatova (1917-1990).
Malkov Oleg Yu., Rastorguev Alexey S.
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Exploring central star variability of planetary nebulae using gaia photometry [PDF]
Scientific ReportsThis study presents an analysis of the variability of 81 central stars of planetary nebulae (CSPNe) are identified as variable in Gaia Data Release 3 (DR3).
M. A. NegmEldin +3 more
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X-ray astronomy of stellar coronae [PDF]
Astronomy and Astrophysics Review, 2004 X-ray emission from stars in the cool half of the Hertzsprung-Russell diagram is generally attributed to the presence of a magnetic corona that contains plasma at temperatures exceeding 1 million K. Coronae are ubiquitous among these stars, yet many fundamental mechanisms operating in their magnetic fields still elude an interpretation through a ...
M Gudel, Gudel Manuel
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Stellar Radio Astronomy: Probing Stellar Atmospheres from Protostars to Giants
Annual Review of Astronomy and Astrophysics, 2002 ▪ Abstract Radio astronomy has provided evidence for the presence of ionized atmospheres around almost all classes of nondegenerate stars. Magnetically confined coronae dominate in the cool half of the Hertzsprung-Russell diagram. Their radio emission is predominantly of nonthermal origin and has been identified as gyrosynchrotron radiation from ...
M Gudel
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Solving Stellar Astronomy Problems in the Orbital Stellar Stereoscopic Observatory Project
Open Astronomy, 2015 We propose to establish an Orbital Stellar Stereoscopic Observatory (OStSO) consisting of two identically equipped spacecrafts (SCs) in the vicinity of two Lagrangian libration points, L4 and L5, of the “Sun – Earth+Moon barycenter” system.
Chubey M. S. +5 more
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Stellar astronomy of the Bronze Age sanctuaries in North Khakassia [PDF]
Archaeoastronomy and Ancient Technologies, 2015 This publication presents the results of two studies of astroarchaeological monuments in North Khakassia confirming the existence of Siberia stellar astronomy in the Bronze age (andronovo culture, Khakassia, mid-II millennium BC).
Larichev, V.E. +2 more
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Invertible Neural Networks in Astrophysics [PDF]
EPJ Web of Conferences, 2022 Modern machine learning techniques have become indispensable in many fields of astronomy and astrophysics. Here we introduce a specific class of methods, invertible neural networks, and discuss two specific applications, the prediction of stellar ...
Klessen Ralf S.
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Open Astronomy, 2022 The results of observations of selected stars orbiting the central body of our Galaxy, which, according to the latest data, has a mass of about 4 million of solar mass, are considered.
Shakht Natalia A. +2 more
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Extragalactic Stellar Astronomy [PDF]
, 2008 Despite their paucity, massive hot stars are real cosmic engines of fundamental importance in shaping our Universe, from its very early stages up to its current appearance. Understanding the physics of massive stars is then a key issue for many relevant astrophysical phenomena.
Urbaneja, Miguel A. +2 more
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The Astronomical Journal, 2023 In this paper, we report on the follow-up of six potential exoplanets detected with Gaia astrometry and provide an overview of what is currently known about the nature of the entire Gaia astrometric exoplanet candidate sample, 72 systems in total.
Marcus L. Marcussen, Simon H. Albrecht
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