Results 11 to 20 of about 47,421 (218)
Convective Penetration in Early-type Stars
The Astrophysical Journal, 2022 Abstract Observations indicate that the convective cores of stars must ingest a substantial amount of material from the overlying radiative zone, but the extent of this mixing and the mechanism that causes it remain uncertain. Recently, Anders et al.
Adam S. Jermyn +3 more
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Nature, 1967 The Early Type Stars By Anne B. Underhill. (Astrophysics and Space Science Library, Vol. 6.) Pp. xiii + 282. (Dordrecht: D. Reidel Publishing Company, 1966.) 52 D. florins.
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Astrophysics and Space Science, 1995 Away from the young disk, several classes of early type stars are found. They include (i) the old, metal-poor blue horizontal branch stars of the halo and the metal-poor tail of the thick disk; (ii) metal-rich young A stars in a rapidly rotating subsystem but with a much higher velocity dispersion than the A stars of the young disk, and (iii) a newly ...
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STAR FORMATION BIMODALITY IN EARLY-TYPE GALAXIES [PDF]
The Astrophysical Journal, 2014 We compute the properties of a sample of 221 local early-type galaxies with a spectral energy distribution (SED) modeling software, CIGALEMC. Concentrating on the star forming activity and dust contents, we derive parameters such as the specific star formation rate, the dust luminosity, dust mass and temperature.
Amblard, A. +5 more
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Polarimetry of Southern Peculiar Early-Type Stars [PDF]
Astronomy and Astrophysics Supplement Series, 1998 An important factor is the relation of HAEBE stars with other groups of peculiar early type stars, such as Be and B[e] stars, luminous blue variables (LBVs) etc. In many cases Polarimetric properties of HAEBE stars and B[e] (Be) stars are similar. We have carried out a Polarimetric study of peculiar early-type stars with the following aims: 1 ...
R. V. Yudin, A. Evans
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Radiative Wind Acceleration in Early Type Stars [PDF]
International Astronomical Union Colloquium, 1981 AbstractThe processes of radiative acceleration of stellar winds in OB stars by single and multiple photon scattering are considered. Single scattering can be the dominant accelerating process for stars later than B2 (Teff < 2 x 104 K) and can account for terminal velocities up to 500 – 1000 km s-1 . Multiple scattering of photons in the approximate
N. Panagia, F. Macchetto
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Radial velocities of early-type stars [PDF]
Symposium - International Astronomical Union, 1970 With the Fehrenbach objective prism radial velocities of about 700 stars of type B0 to A0 were determined in two fields of the Southern Milky Way (lII = 295° bII = −0.6°; lII = 320° bII = −2.5°), with a mean error of ±20 km s−1. An additional photographic UBV-photometry with plates of the ADH-telescope at Boyden Observatory was accomplished.
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A revisit to agglomerates of early‐type Hipparcos stars [PDF]
Astronomische Nachrichten, 2008 AbstractWe study the spatial structure and sub‐structure of regions rich in Hipparcos stars with blue BT – VT colours. These regions, which comprise large stellar complexes, OB associations, and young open clusters, are tracers of on‐going star formation in the Galaxy.
Caballero, J. A., Dinis, L.
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The Theory of Winds in Early Type Stars [PDF]
International Astronomical Union Colloquium, 1981 I assume that the purpose of this review of the theory of winds from early type stars is to summarize the way in which the mass loss rate of a star may be included in a calculation of stellar evolution. Let me summarize my conclusions. It is not possible. One can only use estimates of mass loss rates obtained from the observations.
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Binary stars and the UVX in early-type galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 9 pages, 2 figures.
Hernández-Pérez, Fabiola +1 more
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