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Chemical abundances and evolutionary status of some lambda Bootis type stars and FBSwl
Odessa Astronomical Publications, 2017 Comparative analysis of chemical abundances in the atmospheres of lambda Bootis type stars and FBSwl (field blue stragglers week lined) is presented. Evolutionary status of these metal deficient stars is discussed.
I. V. Chernyshova
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Blue Straggler Formation in Clusters [PDF]
AIP Conference Proceedings, 2010 Blue stragglers are thought to be formed from the merger or coalescence of two stars, but the details of their formation in clusters has been difficult to disentangle. We discuss the two main formation mechanisms for blue stragglers (stellar collisions or mass transfer in a binary system).
Alison Sills +2 more
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The critical mass ratio for W UMa-type contact binary systems [PDF]
Serbian Astronomical JournalContact binaries are close binary systems in which both components fill their inner Roche lobes so that the stars are in direct contact, and in potential mass and energy exchange.
Arbutina Bojan, Wadhwa Surjit
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ON THE TRIPLE ORIGIN OF BLUE STRAGGLERS [PDF]
The Astrophysical Journal, 2009 10 pages, 6 figures.
Perets, Hagai B., Fabrycky, Daniel C.
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BLUE STRAGGLERS AS A MERGING PRODUCT OF LOW-MASSIVE MAIN SEQUENCE BINARIES WITH DETACHED COMPONENTS
Odessa Astronomical Publications, 2017 In the framework of magnetic braking formalism the evolutionary chain describing the sequential evolutionary transitions of the low-massive detached close binaries into "short- periodic" RS CVn-type systems and then into W UMa-class contact stars with ...
G. N. Dryomova +2 more
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Blue Straggler Bimodality: A Brownian Motion Model [PDF]
The Astrophysical Journal, 2018 Abstract The shape of the radial distribution of blue straggler stars (BSS), when normalized to a reference population of horizontal branch (HB) stars, has been found to be a powerful indicator of the dynamical evolution reached by a globular cluster (GC).
Pasquato +5 more
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SPINNING LIKE A BLUE STRAGGLER: THE POPULATION OF FAST ROTATING BLUE STRAGGLER STARS IN ω CENTAURI [PDF]
The Astrophysical Journal, 2014 By using high-resolution spectra acquired with FLAMES-GIRAFFE at the ESO/VLT, we measured radial and rotational velocities for 110 Blue Straggler stars (BSSs) in Omega Centauri, the globular cluster-like stellar system harboring the largest known BSS population. According to their radial velocities, 109 BSSs are members of the system.
MUCCIARELLI, ALESSIO +5 more
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Field population II blue stragglers
The Astrophysical Journal, 1981 Photometry and high-resolution spectra are presented and discussed of metal-poor stars hotter than the turn-off of globular clusters. Very few nonvariable candidates for blue stragglers can be identified One, HD 100363, is probably an old-disk short-period variable.
B. W. Carney, R. C. Peterson
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Blue Stragglers as Long-Lived Stars [PDF]
Symposium - International Astronomical Union, 1981 The existence of blue stragglers in old open clusters with apparent mass more than twice the mass of the turnoff argues against simple binary mass transfer as the mechanism of their origin. The excess of blue stragglers to the red of the termination of the core hydrogen burning main sequence suggests that blue stragglers are not evolving normally ...
J. Craig Wheeler +2 more
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