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Absolute magnitudes of late-type stars
Astrophysics and Space Science, 1986The improved calibration of absolute magnitude versus spectral type and luminosity class is presented for carbon stars and for K- to M-type giants. It is based on the recent results estimated by applying the maximum-likelihood method and other statistical methods to the homogeneous kinematical data including the proper motions in the AGK3 system.
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Theoretical Visibility Curves of Late Type Stars
Astrophysics and Space Science, 1995Theoretical visibility curves are presented for one carbon and one oxygen star. We aim to show the importance of measurements at wavelengths across the band.
S. Lorenz Martins +2 more
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1990
Cool stars on the asymptotic giant branch (AGB) form a late stage of stellar evolution shortly before loosing their outer layers and moving into the state where a planetary nebula is excited. These stars show severe mass-loss rates between 10−8 M ⊙yr−1 at the lower AGB, increasing to some l0−4 M ⊙yr−1 as the star evolves to the top of the AGB while ...
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Cool stars on the asymptotic giant branch (AGB) form a late stage of stellar evolution shortly before loosing their outer layers and moving into the state where a planetary nebula is excited. These stars show severe mass-loss rates between 10−8 M ⊙yr−1 at the lower AGB, increasing to some l0−4 M ⊙yr−1 as the star evolves to the top of the AGB while ...
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Late-Type Stars and Close Binaries
2007Late-type stars are generally characterized by the chromospheric structure showing active phenomena observable by the formation of emission lines and emission of X-ray and UV radiations. In the optical region, most ubiquitous emission lines are CaII H, K lines, while Hα line appears in fully developed chromospheres.
Tomokazu Kogure, Kam-Ching Leung
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Late-type stars found in the DFBS
Astrophysics, 2010A list of comparatively faint late M and Carbon type stars detected on the Digitized First Byurakan Survey (DFBS) spectral plates in the zone with +45° ≤ δ ≤ +49° covering 684 deg2 is presented. Accurate DSS2 positions, USNO-B1.0 B and R magnitudes, 2MASS near-infrared J, H, and Ks photometry, IRAS PSC/FSC fluxes (when available), approximate spectral ...
K. S. Gigoyan +3 more
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Prominences on Late Type Active Stars
1996There is increasing evidence of prominence-like neutral hydrogen clouds suspended in the otherwise hot coronae of active late-type stars. We review this evidence here and discuss the nature of these clouds. In particular we discuss their possible role in rotational braking.
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Ages of Spotted Late-Type Stars
1991It is shown that 87% of spotted single late-type field stars belong to the young disc and Local Association population with ages from 107 to 109 year. A comparison of photometric periods of T Tau-type, cluster, and single field stars confirms that the period difference is largest in the stars with ages of 107 – 108 year.
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Non-LTE abundance corrections for late-type stars from 2000 Å to 3 µm
Astronomy and Astrophysics, 2022Thomas Nordlander +2 more
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3D NLTE spectral line formation of lithium in late-type stars
Monthly Notices of the Royal Astronomical Society, 2020Thomas Nordlander +2 more
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Linking chromospheric activity and magnetic field properties for late-type dwarf stars
Monthly Notices of the Royal Astronomical Society, 2022Aline Vidotto +2 more
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