Results 1 to 10 of about 172 (156)

Fast rotating blue stragglers prefer loose clusters [PDF]

open access: yesNature Communications, 2023
Blue stragglers are anomalously luminous core hydrogen-burning stars formed through mass-transfer in binary/triple systems and stellar collisions. Their physical and evolutionary properties are largely unknown and unconstrained.
Francesco R. Ferraro   +11 more
doaj   +5 more sources

A binary-related origin mediated by environmental conditions for blue straggler stars [PDF]

open access: yesNature Communications
Blue stragglers are anomalously massive core hydrogen-burning stars that, according to the theory of single star evolution, should not exist. They are suspected to form in mass-enhancement processes, involving binary evolution or stellar collisions.
Francesco R. Ferraro   +9 more
doaj   +2 more sources

Are Blue Straggler Stars a Hidden Clue? Intriguing Discovery in Pityriasis Rubra Pilaris Under UV-Induced Fluorescence Dermoscopy [PDF]

open access: yesDermatology Practical & Conceptual
Divya Madonna Dsouza   +5 more
doaj   +2 more sources

Fast-rotating Blue Straggler Stars in the Globular Cluster NGC 3201

open access: yesThe Astrophysical Journal, 2023
We used high-resolution spectra acquired with the Magellan Telescope to measure radial and rotational velocities of approximately 200 stars in the Galactic globular cluster NGC 3201.
Alex Billi   +9 more
doaj   +1 more source

BLUE STRAGGLERS AFTER THE MAIN SEQUENCE [PDF]

open access: yesThe 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
openaire   +3 more sources

BD+43° 3654 – a blue straggler? [PDF]

open access: yesAstronomy & Astrophysics, 2008
4 pages, 1 figure, accepted for publication in A&A ...
Gvaramadze, V. V., Bomans, D. J.
openaire   +2 more sources

Primordial binary evolution and blue stragglers [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractBlue stragglers have been found in all populations. They are important in both stellar evolution and stellar population synthesis. Much evidence shows that blue stragglers are relevant to primordial binaries. Here, we summarize the links between binary evolution and blue stragglers, describe the characteristics of blue stragglers originating ...
Chen, X., Han, Z.
openaire   +4 more sources

Blue straggler production in globular clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
7 pages, 6 figures; MNRAS in ...
DAVIES M.   +2 more
openaire   +4 more sources

Building Blue Stragglers with Stellar Collisions [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractThe evolution of stellar collision products in cluster simulations has usually been modelled using simplified prescriptions. Such prescriptions either replace the collision product with an (evolved) main sequence star, or assume that the collision product was completely mixed during the collision.It is known from hydrodynamical simulations of ...
Glebbeek, E., Pols, O.R.
openaire   +3 more sources

Empirical Measurement of the Dynamical Ages of Three Globular Clusters and Some Considerations on the Use of the Dynamical Clock

open access: yesThe Astrophysical Journal, 2023
We have used the “dynamical clock” to measure the level of dynamical evolution reached by three Galactic globular clusters (namely, NGC 3201, NGC 6316, and NGC 6440).
Francesco R. Ferraro   +5 more
doaj   +1 more source

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