Results 11 to 20 of about 8,510,179 (297)
Titanium abundances in late-type stars [PDF]
Astronomy & Astrophysics, 2023 Context. The titanium abundances of late-type stars are important tracers of Galactic formation history. However, abundances inferred from Ti
J. W. E. Mallinson +6 more
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The circularization time-scales of late–type binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We examine the consequences of, and apply, the formalism developed in Terquem (2021) for calculating the rate DR at which energy is exchanged between fast tides and convection. In this previous work, DR (which is proportional to the gradient of the convective velocity) was assumed to be positive in order to dissipate the tidal ...
Terquem, Caroline, Martin, Scott
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Magnetic Fields of F-Type Stars [PDF]
, 2022 Magnetic fields are an observable feature of many stars, with warm, F-type stars of interest in searching for the transition from the fossil fields in hot stars to dynamos in cool stars driven by convection zones.
Seach, John M.
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Asteroseismology of beta Cephei and Be type stars [PDF]
, 2012 The thesis focuses on the asteroseismology of main sequence B-type stars, particularly \(\beta\) Cephei and Be stars. Photometric observations of these stars were analysed in order to detect stellar oscillations.
Goss, Kym Jeanette Frances
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The magnetic fields, activity and hidden companions of solar-type stars [PDF]
, 2023 The magnetic fields of the Sun and other solar-type stars manifest in a range of observable surface phenomena that provide insight into the magnetic dynamos operating within, but also hamper the detection of exoplanets.
Brown, Emma
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Infrared imaging of late-type stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 Infrared imaging properties of dusty winds around late-type stars are investigated in detail, employing a self-consistent model that couples the equations of motion and radiative transfer. Because of general scaling properties, the angular profiles of surface brightness are self-similar. In any given star, the profile shape is determined essentially by
Ivezic, Zeljko, Elitzur, Moshe
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Polyatomic Molecules in Late-Type Stars. [PDF]
The Astrophysical Journal, 1948 Some general problems connected with the presence of polyatomic molecules in stellar atmospheres are noted, and, in particular, reasons are advanced in favor of attributing at least part of the intensity drop and fluctuations in the spectra of the N-type stars violetward of λ 4100 to the triatomic molecule CH2.
Swings, Polydore, McKellar, A.
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The masses of late-type WN stars [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe present recent results for galactic WNL stars, obtained with the new Potsdam Wolf-Rayet (PoWR) hydrodynamic model atmospheres. Based on a combination of stellar wind modeling and spectral analysis we identify the galactic WNL subtypes as a group of extremely luminous stars close to the Eddington limit.
Gräfener, G., Hamann, W. -R.
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Superflares on Late-Type Stars [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractWe present the results of an extensive survey of superflares on late-type stars (G, K, and M-type main sequence stars) using the Kepler satellite data. Wefound about 6,800 superflares on late-type stars from the data of about 120,000 stars observed over 500 days.
Hiroyuki Maehara +7 more
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The magnetic fields and stellar winds of the mature late F-stars: β Virginis and θ Draconis [PDF]
, 2022 International audienceMapping the large-scale magnetic field in late F-type stars is important for understanding the nature of the stellar dynamo and the dynamics of thin outer convection zones.
Folsom, C. P. +6 more
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