Blue straggler stars in Galactic open clusters and the effect of field star contamination [PDF]
Astronomy and Astrophysics, 2008 We investigate the distribution of Blue Straggler stars in the field of three open star clusters. The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region ...
Giovanni Carraro, Andre Moitinho
exaly +11 more sources
Blue straggler stars in dwarf spheroidal galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Blue straggler star (BSS) candidates have been observed in all old dwarf spheroidal galaxies (dSphs), however whether or not they are authentic BSSs or young stars has been a point of debate.
Michela Mapelli, Steinn Sigurdsson
exaly +10 more sources
THE FIRST DETECTION OF BLUE STRAGGLER STARS IN THE MILKY WAY BULGE [PDF]
Astrophysical Journal, 2011 We report the first detections of Blue Straggler Stars (BSS) in the bulge of the Milky Way galaxy. Proper motions from extensive space-based observations along a single sight-line allow us to separate a sufficiently clean and well-characterized bulge ...
Jay Anderson +2 more
exaly +13 more sources
Fast rotating blue stragglers prefer loose clusters [PDF]
Nature 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 +2 more sources
A binary-related origin mediated by environmental conditions for blue straggler stars [PDF]
Nature CommunicationsBlue 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
Fast-rotating Blue Straggler Stars in the Globular Cluster NGC 3201
The 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 +3 more sources
Are Blue Straggler Stars a Hidden Clue? Intriguing Discovery in Pityriasis Rubra Pilaris Under UV-Induced Fluorescence Dermoscopy [PDF]
Dermatology Practical & ConceptualDivya Madonna Dsouza +5 more
doaj +2 more sources
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
Variable Blue Straggler Stars in the Open Cluster NGC 6819 Observed in the Kepler “Superstamp” Field
The Astronomical Journal, 2023 NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft’s field of view from 2009 to 2013. The central part of the cluster was observed in a 200 × 200 pixel “superstamp” during these four years in 30 minute cadence photometry ...
Joyce A. Guzik +6 more
doaj +1 more source
The 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