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Characteristics of flares on giant stars
Astronomy & Astrophysics, 2022 Context. Although late-type dwarfs and giant stars are substantially different, their flares are thought to originate in similar physical processes and differ only by a scale factor in the energy levels. We study the validity of this approach. Aims. We search for characteristics of flares on active giants, which might be statistically different from ...
K. Oláh +4 more
openaire +4 more sources
Gaia17bpp: A Giant Star with the Deepest and Longest Known Dimming Event
The Astrophysical Journal, 2023 We report the serendipitous discovery of Gaia17bpp/2MASS J19372316+1759029, a binary star with a deep single large-amplitude dimming event of ∼4.5 mag that lasted over 6.5 yr.
Anastasios Tzanidakis +3 more
doaj +1 more source
Planets around Giant Stars [PDF]
AIP Conference Proceedings, 2011 8 pages, 6 figures, Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011 ...
Christoph Bergmann +2 more
openaire +4 more sources
BMC Veterinary Research, 2018 Background Coccidiosis is a prevalent problem in chicken production. Dietary addition of coccidiostats and vaccination are two approaches used to suppress coccidia in the practical production.
Anqiang Lai +4 more
doaj +1 more source
Eclipsing spotted giant star with K2 and historical photometry [PDF]
Astronomy & Astrophysics, 2018 Context. Stars can maintain their observable magnetic activity from the pre-main sequence (PMS) to the tip of the red giant branch. However, the number of known active giants is much lower than active stars on the main sequence (MS) since the stars spend
K. Oláh +19 more
semanticscholar +1 more source
Common-envelope evolution with an asymptotic giant branch star [PDF]
Astronomy & Astrophysics, 2020 Common-envelope phases are decisive for the evolution of many binary systems. Cases with asymptotic giant branch (AGB) primary stars are of particular interest because they are thought to be progenitors of various astrophysical transients.
C. Sand +4 more
semanticscholar +1 more source
Wobbling Jets in Common Envelope Evolution
The Astrophysical Journal, 2023 We find that the convective motion in the envelopes of red supergiant (RSG) stars supplies a non-negligible stochastic angular momentum to the mass that a secondary star accretes in a common envelope evolution (CEE), such that jets that the secondary ...
Noam Dori, Ealeal Bear, Noam Soker
doaj +1 more source
The Astrophysical Journal, 2023 In previous work, we identified a population of 38 cool and luminous variable stars in the Magellanic Clouds and examined 11 in detail in order to classify them as either Thorne–Żytkow objects (TŻOs; red supergiants with a neutron star cores) or super ...
Anna J. G. O‘Grady +11 more
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AMBER/VLTI observations of 5 giant stars [PDF]
, 2011 While the search for exoplanets around main sequence stars more massive than the Sun have found relatively few such objects, surveys performed around giant stars have led to the discovery of more than 30 new exoplanets.
A. P. Hatzes +43 more
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Journal of Lithic Studies, 2017 Native American myths, legends and oral traditions are rich with stories of giant beings existing in ancient times. They all talk of giant Thunderers or Thunder-beings, giant snakes and great Thunderbirds.
Herman E. Bender
doaj +1 more source