Results 41 to 50 of about 12,886 (274)
Search and analysis of blue straggler stars in open clusters [PDF]
Astronomy & Astrophysics, 2006 Aims: This paper presents a new homogeneous catalogue of blue straggler stars (BSS) in Galactic open clusters. Methods: Photometric data for 216 clusters were collected from the literature and 2782 BSS candidates were extracted from 76 of them. Results: We found that the anticorrelation of BSS frequency vs. total magnitude identified in similar studies
Fabrizio De Marchi +4 more
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The fractions of post-binary-interaction stars and evolved blue straggler stars on the red giant branch of globular clusters [PDF]
Research in Astronomy and Astrophysics, 2021 The red giant branch (RGB) of globular clusters (GCs) is home to some exotic stars, which may provide clues on the formation of multiple stellar populations in GCs. It is well known that binary interactions are responsible for many exotic stars. Thus, it
Dandan Wei +6 more
semanticscholar +1 more source
The secret of the elixir of youth of blue straggler stars
, 2021 Happy April Fool day!
H. M. J. Boffin
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On blue straggler formation by direct collisions of main sequence stars [PDF]
The Astrophysical Journal, 1995 We report the results of new SPH calculations of parabolic collisions between main-sequence (MS) stars. The stars are assumed to be close to the MS turn-off point in a globular cluster and are therefore modeled as $n=3$, $ =5/3$ polytropes. We find that the high degree of central mass concentration in these stars has a profound effect on the ...
James C. Lombardi +2 more
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WEIGHING STARS: THE IDENTIFICATION OF AN EVOLVED BLUE STRAGGLER STAR IN THE GLOBULAR CLUSTER 47 TUCANAE* [PDF]
The Astrophysical Journal, 2016 ABSTRACT Globular clusters are known to host peculiar objects named blue straggler stars (BSSs), significantly heavier than the normal stellar population. While these stars can be easily identified during their core hydrogen-burning phase, they are photometrically indistinguishable from their low-mass sisters in advanced stages of the ...
F. R. Ferraro +6 more
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The blue straggler star population in NGC 6229★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We have used a combination of high-resolution Hubble Space Telescope Wide Field Planetary Camera 2 and wide-field ground-based observations in ultraviolet and optical bands to study the blue straggler star (BSS) population of the outer halo globular cluster NGC 6229 over its entire radial extent.
Barbara Lanzoni +6 more
openaire +3 more sources
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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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
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On the Origin of the Split Main Sequences of the Young Massive Cluster NGC 1856
The Astrophysical Journal, 2023 The detection of split main sequences (MSs) associated with young clusters (≲600 Myr) has attracted a lot of attention. A prevailing scenario is that a bimodality of stellar rotation distribution drives the bifurcation of the MS. Nevertheless, the origin
Li Wang +4 more
doaj +1 more source
Blue Straggler Stars: The Spectacular Population in M80 [PDF]
The Astrophysical Journal, 1999 15 pages, 5 figures, Astrophysical Journal Letters, in ...
Robert T. Rood +3 more
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