UOCS-XII. A study of open cluster NGC 6940 using UVIT/AstroSat: cluster properties and exotic populations [PDF]
Monthly notices of the Royal Astronomical Society, 2023 We study an open cluster NGC 6940 using AstroSat/UVIT data and other archival data. This is an intermediate age cluster (∼ 1 Gyr), located at about 770 pc distance, harboring several exotic populations apart from normal single and binary stars.
Anju Panthi, K. Vaidya
semanticscholar +1 more source
The Blue Straggler Population of the Open Clusters Trumpler 5, Trumpler 20, and NGC 2477 [PDF]
Astronomical Journal, 2020 We present a study based on Gaia DR2 of the population of blue straggler stars in the open clusters Trumpler 5, Trumpler 20, and NGC 2477. All candidates were selected according to their position in the color–magnitude diagram, their proper motion ...
M. Rain +5 more
semanticscholar +1 more source
Characterization of hot populations of Melotte 66 open cluster using Swift/UVOT [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Ultraviolet (UV) wavelength observations have made a significant contribution to our understanding of hot stellar populations of star clusters. Multi-wavelength spectral energy distributions (SEDs) of stars, including ultraviolet observations, have ...
Khushboo K. Rao +5 more
semanticscholar +1 more source
UOCS-VIII. UV Study of the open cluster NGC 2506 using ASTROSAT [PDF]
, 2022 We study an intermediate-age open cluster NGC 2506 using the ASTROSAT /UVIT data and other archival data. We identified 2175 cluster members using a machine learning-based algorithm, ML–MOC, on Gaia EDR3 data.
Anju Panthi +6 more
semanticscholar +1 more source
THE K2 M67 STUDY: AN EVOLVED BLUE STRAGGLER IN M67 FROM K2 MISSION ASTEROSEISMOLOGY [PDF]
, 2016 Yellow straggler stars (YSSs) fall above the subgiant branch in optical color–magnitude diagrams (CMDs), between the blue stragglers and the red giants. YSSs may represent a population of evolved blue stragglers, but none have the direct and precise mass
E. Leiner +4 more
semanticscholar +1 more source
The new detection of blue straggler stars in 50 open clusters using Gaia DR3 [PDF]
Astronomy & Astrophysics, 2023 The particularly abundant presence of blue straggler stars (BSS) in Galactic open clusters offers favorable conditions for detailed studies on the statistical properties and the origin of the blue straggler population.
Chunyan Li +3 more
semanticscholar +1 more source
Binary origin of blue straggler stars in Galactic star clusters [PDF]
Astronomy & AstrophysicsBuilding on the recent release of a new Gaia -based blue straggler star catalog in Galactic open star clusters (OCs), we explored the properties of these stars in a cluster sample spanning a wide range in fundamental parameters.
M. Rain +7 more
semanticscholar +1 more source
Could the number of blue straggler stars help to determine the age of their parent globular cluster? [PDF]
SCIREA Journal of Astronomy, 2023 A recent study shows, from an empirical deduction, that the number and the presence of the blue straggler stars (BSS) in an open cluster follow a function whose components are the ratio between age and the relaxation time, $\it f$, and a factor, $\varpi$
F. L. D. Andr'es
semanticscholar +1 more source
Fast-rotating Blue Straggler Stars in the Globular Cluster NGC 3201 [PDF]
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.
Alexandria Billi +9 more
semanticscholar +1 more source
Ultraviolet stellar population of the old open cluster M67 (NGC 2682) [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present the results of ultraviolet (UV) photometry of the old open cluster M67 obtained using Galaxy Evolution Explorer (GALEX) in far-ultraviolet (FUV) and near-ultraviolet (NUV) bands. UV detections of 18 blue straggler stars (BSSs), 3 white dwarfs (
N. Sindhu +3 more
semanticscholar +1 more source