Results 41 to 50 of about 4,407 (194)

Stellar Populations and Variable Stars in the Core of the Globular Cluster M5 [PDF]

, 1997
We report the discovery of a variable blue straggler in the core of the globular cluster M5, based on a 12-hour long series of images obtained with the Planetary Camera aboard the Hubble Space Telescope.
Buonanno R., Kadla Z. I., Kravtsov V. V., Laurent Drissen, Michael M. Shara, Reid N., Yan L.   +6 more
core   +2 more sources

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, Hideyuki Saio, Michel Breger   +2 more
openaire   +2 more sources

Blue Stragglers in Globular Clusters: Observations, Statistics and Physics

, 2014
This chapter explores how we might use the observed {\em statistics} of blue stragglers in globular clusters to shed light on their formation.
Knigge, Christian
core   +1 more source

Composition Mixing during Blue Straggler Formation and Evolution [PDF]

, 1996
We use smoothed-particle hydrodynamics to examine differences between direct collisions of single stars and binary star mergers in their roles as possible blue straggler star formation mechanisms.
Eggleton P. P., Eric L. Sandquist, Gratton R. G., Jorgensen H. E., Jorgensen H. E., Kaluzny J., Lars Hernquist, Lauzeral C., Lauzeral C., Mateo M., Mathys G., Michael Bolte, Monaghan J. J., Monaghan J. J., Niss B., Seaton M. J., Yan L.   +16 more
core   +3 more sources

Detection of white dwarf companions to blue stragglers in the open cluster NGC 188: direct evidence for recent mass transfer

, 2014
Several possible formation pathways for blue straggler stars have been developed recently, but no one pathway has yet been observationally confirmed for a specific blue straggler.
Geller, Aaron M., Gosnell, Natalie M., Knigge, Christian, Leigh, Nathan, Mathieu, Robert D., Sills, Alison   +5 more
core   +1 more source

Ecology of Blue Straggler Stars

, 2014
Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G.
Boffin, H. M. J., Carraro, G., Beccari, G.   +2 more
openaire   +4 more sources

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, Young-Wook Lee, Yong-Ik Byun   +2 more
doaj  

Magnetic Field Amplification during Stellar Collisions between Low-mass Stars

The Astrophysical Journal Letters
Blue 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, Alison Sills, Ruediger Pakmor, Selma de Mink, Robert Mathieu   +4 more
doaj   +1 more source

Mass-luminosity anomalies: Plausible evidence of recent stellar interaction in the extraordinary blue straggler S1082

Astronomy & Astrophysics
Context. We present an observational and theoretical study of the complex stellar system S1082 in the open cluster M67. This system consists of at least four stars: a blue straggler in a 1.07-day eclipsing binary with a main sequence star (binary A) and ...
Quitral-Pierart Amanda A., Leigh Nathan W. C., Mathieu Robert D., Latham David W., Sandquist Eric L., Horch Elliott P.   +5 more
doaj   +1 more source

The blue stragglers formed via mass transfer in old open clusters

, 2006
In this paper, we present the simulations for the primordial blue stragglers in the old open cluster M67 based on detailed modelling of the evolutionary processes.
Alexander, B. Tian, Chen, Collier, Davies, Deng, Eggleton, Eggleton, Eggleton, Fan, Ferraro, Fregeau, Goldman, Han, Han, Hills, Hobbs, Hurly, Hurly, Iglesias, Kippenhahn, Kroupa, L. Deng, Lejeune, Lejeune, Leonard, Lombardi, Mapelli, Mathieu, Mathys, McCrea, Nemec, Ouellette, Piotto, Pols, Pols, Pols, Sandage, Sandquist, Sandquist, Sandquist, Schiavon, Shara, Stepien, Strom, Tassoul, van den Berg, X. B. Zhang, Z. Han, Zahn   +49 more
core   +2 more sources