Blue straggler stars in the globular cluster NGC 5053 [PDF]
The Astrophysical Journal, 1989 A study of the low central concentration globular cluster NGC 5053 based on photometry to 23 mag is reported. Deep C-M diagrams are presented, a mean metal abundance for the cluster is derived from the color of the RGB at the level of the horizontal branch, and theoretical isochrones are used to derive a distance modulus of (m - M0) = 16.05 + or - 0.14
Nemec, James M., Cohen, Judith G.
openaire +6 more sources
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. +16 more
core +3 more sources
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 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
WOCS 4540: Detailed Analysis of a very Long Orbital Period Blue Straggler
The Astrophysical Journal, 2023 WOCS 4540 is the longest orbital period ( P _orb = 3030 days) blue straggler star (BSS)—white dwarf (WD) pair in the old open cluster NGC 188. It also contains one of the most luminous BSS in the cluster.
Meng Sun, Robert D. Mathieu
doaj +1 more source
Blue Straggler Stars Beyond the Milky Way. III. Detection of Evolved Blue Straggler Candidates in Large Magellanic Cloud Clusters [PDF]
Astronomical Journal, 2018 We analyze Hubble Space Telescope observations of nine Large Magellanic Cloud star clusters with ages of 1–2 Gyr to search for evolved counterparts of blue straggler stars.
Chengyuan Li +5 more
semanticscholar +1 more source
STELLAR COLLISIONS AND BLUE STRAGGLER STARS IN DENSE GLOBULAR CLUSTERS [PDF]
The Astrophysical Journal, 2013 Blue straggler stars (BSS) are abundantly observed in all Galactic globular clusters (GGC) where data exist. However, observations alone cannot reveal the relative importance of various formation channels or the typical formation times for this well studied population of anomalous stars.
Chatterjee, S. +3 more
openaire +5 more sources
Blue Straggler Stars in the Unusual Globular Cluster NGC 63881 [PDF]
The Astrophysical Journal, 2008 Accepted by Apj; 30 pages, 12 ...
DALESSANDRO, EMANUELE +6 more
openaire +4 more sources
Nonstandard Modeling of a Possible Blue Straggler Star, KIC 11145123 [PDF]
The Astrophysical Journal, 2021 Abstract Nonstandard modeling of KIC 11145123, a possible blue straggler star, has been asteroseismically carried out based on a scheme to compute stellar models with the chemical compositions in their envelopes arbitrarily modified, mimicking the effects of some interactions with other stars through which blue straggler stars are ...
Yoshiki Hatta +3 more
openaire +2 more sources
Blue Straggler Stars beyond the Milky Way. IV. Radial Distributions and Dynamical Implications [PDF]
Astrophysical Journal, 2018 Blue straggler stars (BSSs) have been proposed as powerful indicators to measure the dynamical state of Galactic globular clusters (GCs). Here we examine for the first time whether this framework of BSSs as dynamical clocks, which was specifically ...
Chengyuan Li +5 more
semanticscholar +1 more source