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
doaj +1 more source
The radial distribution of blue stragglers in Galactic globular cluster NGC 6656 − clues to the dynamical status [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present dynamical status of the Galactic globular cluster NGC 6656 using spatial distribution of Blue Straggler Stars (BSSs). A combination of multi-wavelength high-resolution space and ground-based data are used to cover a large cluster region.
Gaurav Singh, R. Yadav
semanticscholar +1 more source
mocca code for star cluster simulations – VI. Bimodal spatial distribution of blue stragglers [PDF]
, 2016 The paper presents an analysis of formation mechanism and properties of spatial distributions of blue stragglers in evolving globular clusters, based on numerical simulations done with the MOCCA code.
A. Hypki +2 more
semanticscholar +1 more source
The lithium abundance of M67 blue stragglers - A constraint on the blue straggler phenomenon
The Astrophysical Journal, 1991 Upper limits have been placed on the line strength of the 6707 A Li I resonance doublet in seven blue stragglers in M67. The corresponding upper limits on abundances range from log N(Li) less than about 1.3 to less than about 2.3. This result is significantly below the level of log N(Li) about 3.1 + or {minus} 0.1 found in field main-sequence stars of ...
C. J. Pritchet, J. W. Glaspey
openaire +1 more source
The origins of blue stragglers and binarity in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 (abridged) We use newly available empirical binary fractions for globular clusters to carry out a direct test of the binary evolution hypothesis, and of collisional channels that involve binary stars. More specifically, using the previously reported correlation between blue straggler numbers and core mass as a benchmark, we test for correlations with ...
Leigh, N. +5 more
openaire +3 more sources
Chemical composition of a palomar 12 blue straggler
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT With the equivalent area of a 16-m telescope, ESPRESSO in 4UT mode allows to inaugurate high resolution spectroscopy for solar-type stars belonging to extragalactic globular clusters. We determine the chemical composition of an extragalactic blue straggler (BS).
L Pasquini +7 more
openaire +4 more sources
MOCCA code for star cluster simulations - V. Initial globular cluster conditions influence on blue stragglers [PDF]
, 2016 The paper presents an analysis of properties of populations of blue stragglers (BSs) in evolving globular clusters, based on numerical simulations done with the MOCCA code for various initial globular clusters conditions.
A. Hypki +2 more
semanticscholar +1 more source
The Blue Straggler Population of the Globular Cluster M5 [PDF]
The Astrophysical Journal, 2007 By combining high-resolution HST and wide-field ground based observations, in ultraviolet and optical bands, we study the Blue Stragglers Star (BSS) population of the galactic globular cluster M5 (NGC 5904) from its very central regions up to its periphery. The BSS distribution is highly peaked in the cluster center, decreases at intermediate radii and
LANZONI, BARBARA +7 more
openaire +4 more sources
Cannibals in the thick disk: the young α-rich stars as evolved blue stragglers [PDF]
, 2016 This work was partly supported by the European Union FP7 programme through ERC grant number 320360. P.J. acknowledges King’s College Cambridge for partially supporting this work. K.H.
P. Jofré +12 more
semanticscholar +1 more source
Evolutionary history of four binary blue stragglers from the globular clusters ω Cen, M 55, 47 Tuc, and NGC 6752 [PDF]
, 2016 Context. Origin and evolution of blue stragglers in globular clusters is still a matter of debate. Aims. The aim of the present investigation is to reproduce the evolutionary history of four binary blue stragglers in four different clusters, for which ...
K. Stȩpień, A. Pamyatnykh, M. Rozyczka
semanticscholar +1 more source