Results 71 to 80 of about 628,144 (303)
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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The Astrophysical Journal Supplement Series, 2023 Using data from Gaia Data Release 3 and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4–4000 Myr that provides detailed information on membership, binary systems, and rotation. We assess the memberships in 5D phase space, and
Liu Long +11 more
doaj +1 more source
On the Evidence of Disks around Blue Straggler Stars [PDF]
The Astrophysical Journal, 2005 Recent observations of blue stragglers by De Marco et al. (2004) have revealed continuum deficits on the blue side of the Balmer discontinuity, leading these authors to infer the presence of discs around the stars. This intriguing possibility may throw light on aspects of the mechanisms responsible for at least some of these objects; current theories ...
John M. Porter, Richard H. D. Townsend
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On the Variability of Blue Straggler Stars in the Globular Cluster M53 [PDF]
Journal of Astronomy and Space Sciences, 1998 We present the results of a search for photometric variable blue straggler stars (BSSs) in the globular cluster M53. Six of the 151 probable BSSs are identified as variable candidates based on the robust variable star detection technique of Welch ...
Soo-Chang Rey +2 more
doaj
The blue stragglers of Omega Centauri
The Astrophysical Journal, 1986 On a obtenu les spectres 3500-5000 A (resolution 3,6 A) de six candidats. Ils ne presentent aucune caracteristique inhabituelle. les vitesses radiales montrent que ces six vagabondes bleues appartiennent a l'amas.
J. V. Villumsen +2 more
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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XV. The Dynamical Clock: Reading Cluster Dynamical Evolution from the Segregation Level of Blue Straggler Stars [PDF]
Astrophysical Journal, 2018 The parameter A+, defined as the area enclosed between the cumulative radial distribution of blue straggler stars (BSSs) and that of a reference population, is a powerful indicator of the level of BSS central segregation.
F. Ferraro +25 more
semanticscholar +1 more source
Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires
Advanced Functional Materials, EarlyView.In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton +11 more
wiley +1 more source
Magnetic Field Amplification during Stellar Collisions between Low-mass Stars
The Astrophysical Journal LettersBlue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu +4 more
doaj +1 more source
Constraining Mass-transfer Histories of Blue Straggler Stars with COS Spectroscopy of White Dwarf Companions [PDF]
Astrophysical Journal, 2019 Recent studies show that the majority of blue straggler stars (BSSs) in old open clusters are formed through mass transfer from an evolved star onto a main-sequence companion, resulting in a BSS and white dwarf (WD) in a binary system.
N. Gosnell +6 more
semanticscholar +1 more source
The Blue Straggler Stars of Galactic Clusters [PDF]
International Astronomical Union Colloquium, 1993 AbstractThe origin and evolution of blue straggler stars (BS) in clusters is still an unsolved problem for our understanding of stellar evolution. Several rivalling theories exist, of which that of Saio & Wheeler (1980) is the most interesting one since it assumes additional mixing of fuel in the interior of BS.
D. Schonberner, Ralf Napiwotzki
openaire +2 more sources