Results 1 to 10 of about 3,873,413 (130)
BLUE STRAGGLERS AFTER THE MAIN SEQUENCE [PDF]
The Astrophysical Journal, 2009 We study the post-main sequence evolution of products of collisions between main sequence stars (blue stragglers), with particular interest paid to the horizontal branch and asymptotic giant branch phases. We found that the blue straggler progeny populate the colour-magnitude diagram slightly blueward of the red giant branch and between 0.2 and 1 ...
Sills, A. +2 more
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Pre-Main-Sequence Lithium Depletion [PDF]
, 2006 8 pages, invited review at "Chemical abundances and mixing in stars in the Milky Way and its satellites", eds. L. Pasquini, S. Randich. ESO Astrophysics Symposium (Springer-Verlag)
A. Ford +35 more
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Abundances on the Main Sequence of ω Centauri [PDF]
The Astrophysical Journal, 2007 Abundance ratios of carbon, nitrogen and strontium relative to iron, calculated using spectrum synthesis techniques, are given for a sample of main sequence and turnoff stars that belong to the globular cluster omega Centauri. The variations of carbon, nitrogen and/or strontium show several different abundance patterns as a function of [Fe/H].
Stanford, Laura +3 more
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The ages of pre-main-sequence stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 The position of pre-main-sequence or protostars in the Hertzsprung--Russell diagram is often used to determine their mass and age by comparison with pre-main-sequence evolution tracks. On the assumption that the stellar models are accurate, we demonstrate that, if the metallicity is known, the mass obtained is a good estimate.
Ian A. Bonnell +2 more
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Pre-Main-Sequence A-type stars [PDF]
Proceedings of the International Astronomical Union, 2004 Young A-type stars in the pre--main-sequence (PMS) evolutionary phase are particularly interesting objects since they cover the mass range (1.5-4 solar ma sses) which is most sensitive to the internal conditions inherited during the protostellar phase. In particular, they undergo a process of thermal relaxation from which they emerge as fully radiative
Marcella Marconi, Francesco Palla
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Asteroseismology of Stars on the Upper Main Sequence [PDF]
Proceedings of Frank N. Bash Symposium 2011: New Horizons in Astronomy — PoS(Bash11), 2012 I review the properties of pulsators located on the upper main sequence in the HR diagram and discuss asteroseismic inferences on the internal structure of stars of spectral type A and B. Special attention is given to the problem of uncertainties in stellar opacities in modelling.
Lenz, P.
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A Main Sequence for Quasars [PDF]
Frontiers in Astronomy and Space Sciences, 2018 Invited talk presented at the Padova Conference on "Quasars at all cosmic epochs"; to appear in Frontiers of Astrophysics and Space ...
Marziani, Paola +9 more
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The Blazar Main Sequence [PDF]
The Astrophysical Journal, 2002 26 pages, 2 eps figures, revised version #2, accepted for pubblication in ...
V. D’Elia, A. Cavaliere
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The main sequence of star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 16 pages, 21 figures, accepted for publication in ...
Kupper, Andreas H. W. +2 more
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Duplicity on the main sequence [PDF]
Astrophysics and Space Science, 1984 AbstractA review paper or a lecture like the following one, will best serve ‘its’ conference by giving an overview of the basic facts, and an impartial review of current debates, also by trying to point out some apparently crucial questions whose solutions, we hope, will determine the line of future research.Because these stars are essentially ...
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