Results 11 to 20 of about 85,442 (265)

What can magnetic early B-type stars tell us about early B-type stars in general? [PDF]

, 2016
Some magnetic early B-type stars display Hα emission originating in their Centrifugal Magnetospheres (CMs). To determine the rotational and magnetic properties necessary for the onset of emission, we analyzed a large spectropolarimetric dataset for a ...
Grunhut, Jason, Wade, Gregg,, Alecian, Evelyne,, Jason Grunhut, Evelyne Alecian, Neiner, Coralie,, Petit, Veronique,, Gregg Wade, Rivinius, Thomas,, Wade, Gregg, null null, Neiner, Coralie, Grunhut, Jason,, Coralie Neiner, Alecian, Evelyne, Matthew Shultz, Thomas Rivinius, Rivinius, Thomas, Véronique Petit, Shultz, Matthew,, Binamics Collaboration, ., Shultz, Matthew E., Petit, Veronique   +22 more
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A magnetic snapshot survey of F-type stars [PDF]

, 2020
International audienceWe present a spectropolarimetric magnetic snapshot survey of 55 stars which includes 53 F-type stars ranging from spectral types F0 to F9 plus 2 chemically peculiar stars β CrB, and δ Cap.
Buysschaert, B., Folsom, C. P., Mengel, M. W., Neiner, C., Seach, J. M., Oksala, M. E., Marsden, S. C., Carter, B. D.   +7 more
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Bayesian Ages for Early-type Stars from Isochrones Including Rotation, and a Possible Old Age for the Hyades [PDF]

, 2015
We combine recently computed models of stellar evolution using a new treatment of rotation with a Bayesian statistical framework to constrain the ages and other properties of early-type stars. We find good agreement for early-type stars and clusters with
Huang, Chelsea X., Brandt, Timothy D.
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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.
openaire   +2 more sources

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., Riguccini, L., Temi, P., Im, S., Fanelli, M., Serra, P.   +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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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, Bruzual, Gustavo   +1 more
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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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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, Jürgen H. M. M. Schmitt   +1 more
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