Results 21 to 30 of about 11,496,581 (289)
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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Galactic Motions of The Early Type Stars
Galactic Motions of The Early Type StarsThe statistical analysis of the radial velocities of early type stars within 3 kpc from the sun is carried out on the assumption that the velocity field of the stars in the Galaxy is non-circuler and axially symmetric.
YOKOO, Takeo +5 more
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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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X-ray properties of early-type stars [PDF]
Symposium - International Astronomical Union, 1994 Extensive stellar surveys with the Einstein Observatory (Chlebowski et al., 1989) and with ROSAT have clearly confirmed the presence of stellar X-ray emission over nearly the whole range of the HR diagram. In the ROSAT all-sky survey data approximately 20000 stellar X-ray sources were detected (Schmitt et al., 1992).
Thomas W. Berghöfer +1 more
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The Astrophysical Journal, 1968 Surface magnetic field variations in early stars, suggesting mechanism for magnetic energy transfer from convective core to ...
A. Finzi, R. A. Wolf
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