Results 11 to 20 of about 11,496,581 (289)
Detection of moving groups among early type stars [PDF]
Our procedure to detect moving groups in the solar neighbourhood (Chen et al., 1997) in the four-dimensional space of the stellar velocity components and age has been improved.
Asiain García, Ricard +3 more
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Magnetism in massive early-type stars
In the last five years our knowledge of magnetism in early-type stars has significantly improved because of the new gen- eration of high-resolution spectropolarimeters (ESPaDOnS@CFHT, Narval@TBL, HARPSpol@ESO).
G.A. Wade, J.H. Grunhut
core +2 more sources
High resolution studies of early type emission line stars [PDF]
This thesis presents a study of early type, emission line objects on small angular scales. Spectroastrometry is used to separate the spectra of unresolved Herbig Ae/Be binary systems.
Wheelwright, Hugh Eric
core +6 more sources
Magnetic Fields of F-Type Stars [PDF]
Magnetic fields are an observable feature of many stars, with warm, F-type stars of interest in searching for the transition from the fossil fields in hot stars to dynamos in cool stars driven by convection zones.
Seach, John M.
core +1 more source
Convective Penetration in Early-type Stars
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
openaire +2 more sources
Asteroseismology of beta Cephei and Be type stars [PDF]
The thesis focuses on the asteroseismology of main sequence B-type stars, particularly \(\beta\) Cephei and Be stars. Photometric observations of these stars were analysed in order to detect stellar oscillations.
Goss, Kym Jeanette Frances
core +7 more sources
Modelling and observations of molecules in discs around young stars [PDF]
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core +6 more sources
XMM-Newton X-ray study of early type stars in the Carina OB1 association [PDF]
<p><b>Aims:</b> X-ray properties of the stellar population in the Carina OB1 association are examined with special emphasis on early-type stars.
I. I. Antokhin +14 more
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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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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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