Zobrazeno 1 - 10
of 12 252
pro vyhledávání: '"late-type [Stars]"'
Rapidly growing datasets from stellar spectroscopic surveys are providing unprecedented opportunities to analyse the chemical evolution history of our Galaxy. However, spectral analysis requires accurate modelling of synthetic stellar spectra for lat
Externí odkaz:
http://arxiv.org/abs/2403.19304
Autor:
Lind, Karin, Amarsi, Anish Mayur
The chemical compositions of stars encode the history of the universe and are thus fundamental for advancing our knowledge of astrophysics and cosmology. However, measurements of elemental abundances ratios, and our interpretations of them, strongly
Externí odkaz:
http://arxiv.org/abs/2401.00697
Autor:
Pinçon, C., Petitdemange, L., Raynaud, R., Garcia, L. J., Guseva, A., Rieutord, M., Alecian, E.
Modeling the surface brightness distribution of stars is of prime importance to interpret observations. Nevertheless, this remains quite challenging for cool stars as it requires one to model the MHD turbulence that develops in their convective envel
Externí odkaz:
http://arxiv.org/abs/2403.08405
Autor:
Wang, Ella Xi, Nordlander, Thomas, Buder, Sven, Ciucă, Ioana, Soen, Alexander, Martell, Sarah, Ness, Melissa, Lind, Karin, McKenzie, Madeleine, Stello, Dennis
Lithium's susceptibility to burning in stellar interiors makes it an invaluable tracer for delineating the evolutionary pathways of stars, offering insights into the processes governing their development. Observationally, the complex Li production an
Externí odkaz:
http://arxiv.org/abs/2402.02669
Autor:
Karmakar, Subhajeet, Bandyopadhyay, Avrajit, Weaver, Wm. Bruce, Shedge, Riddhi, Pandey, Jeewan C., Cotton, Daniel V., Perkins, Jean
Late-type stars are the most abundant in the galactic stellar population. These stars, with a similar internal structure to the Sun, are expected to have solar-like atmospheres. Investigating the stellar parameters and chemical abundances on late-typ
Externí odkaz:
http://arxiv.org/abs/2401.00113
It is shown that the description of the solar cycle that takes into account the odd zonal harmonic of the solar magnetic field allows us to deepen our knowledge of two important aspects of the solar activity. First, to clarify and expand predictions
Externí odkaz:
http://arxiv.org/abs/2311.00472
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We analyse the relation between the activity cycle length and the Rossby number and collected a sample of 44 main sequence stars with well-known activity cycle periods and rotation periods. We find a linear behaviour in the double-logarithmic relatio
Externí odkaz:
http://arxiv.org/abs/2306.05866
Autor:
Messineo, Maria
Publikováno v:
A&A 671, A148 (2023)
Aims. Gaia DR3 GSP-Phot and GSP-Spec parameters of known K- and M-type stars with luminosity class I are examined and compared with parameters collected from the literature, to assess their accuracy and their potential for stellar classification of u
Externí odkaz:
http://arxiv.org/abs/2301.07415
Akademický článek
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