Results 101 to 110 of about 4,407 (194)
The Astrophysical JournalWe present the analysis of the extended main-sequence turnoff (eMSTO) in the open cluster NGC 6067. We derive the projected rotational velocity, v sin i , of the stars belonging to the eMSTO region of the main sequence (MS) utilizing Gaia-ESO spectra ...
Jayanand Maurya +9 more
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A Galactic Center Origin for HE 0437-5439, the Hypervelocity Star near the Large Magellanic Cloud
, 2010 We use Hubble Space Telescope imaging to measure the absolute proper motion of the hypervelocity star (HVS) HE 0437-5439, a short-lived B star located in the direction of the Large Magellanic Cloud (LMC).
Anderson, Jay +6 more
core +1 more source
The Blue Straggler Star population in NGC6229
The Monthly Notices of the Royal Astronomical Society , 2012 We have used a combination of high-resolution Hubble Space Telescope Wide Field Planetary Camera 2 and wide-field ground-based observations in ultraviolet and optical bands to study the blue straggler star (BSS) population of the outer halo globular cluster NGC 6229 over its entire radial extent.
SANNA, NICOLETTA +5 more
openaire +1 more source
UOCS. XIII. Study of the Far-ultraviolet Bright Stars in the Open Cluster NGC 2420 Using AstroSat
The Astrophysical JournalWe present the study of four far-ultraviolet (FUV) bright stars in the field of the open cluster NGC 2420 using the Ultra Violet Imaging Telescope mounted on AstroSat.
R. K. S. Yadav +5 more
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Binary Fraction in Galactic Star Clusters: FSR 866, NGC 1960, and STOCK 2
The Astronomical JournalThe study of binary stars in different astronomical environments offers insights into the dynamical state of the hosting stellar systems. The binary fraction in fact plays a crucial role in the dynamical evolution of stellar systems, regulating processes
L. Yalyalieva +3 more
doaj +1 more source
Morphological and molecular markers of mouse area CA2 along the proximodistal and dorsoventral hippocampal axes. [PDF]
Hippocampus, 2023 Radzicki D, Chong S, Dudek SM.
europepmc +1 more source
The Astronomical JournalWe present a statistical, photometric, and spectral energy distribution (SED) analysis of the poorly studied old open cluster: NGC 2243, to characterize its blue straggler star (BSS) population.
A. H. Sheikh, Biman J. Medhi
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The Astrophysical JournalWe investigate barium (Ba) abundances in blue straggler stars (BSSs) in two open clusters, NGC 7789 (1.6 Gyr) and M67 (4 Gyr), as signatures of asymptotic-giant-branch (AGB) mass transfer.
Andrew C. Nine +3 more
doaj +1 more source
Blue straggler formation at core collapse
, 2016 Among the most striking feature of blue straggler stars (BSS) is the presence of multiple sequences of BSSs in the colour-magnitude diagrams (CMDs) of several globular clusters. It is often envisaged that such a multiple BSS sequence would arise due a recent core collapse of the host cluster, triggering a number of stellar collisions and binary mass ...
openaire +2 more sources
The Astrophysical JournalWe have analyzed Chandra and Suzaku observations of the globular cluster Terzan 6, made when the recurrent transient GRS 1747–312 was in quiescence. Our analysis reveals the presence of a second eclipsing, bursting neutron star low-mass X-ray binary in ...
Maureen van den Berg +6 more
doaj +1 more source