Results 11 to 20 of about 885 (107)
Characterization of Blue and Yellow Straggler Stars of Berkeley 39 [PDF]
Astronomical JournalWe characterize blue straggler stars (BSSs) and yellow straggler stars (YSSs) of the open cluster (OC) Berkeley 39 using multiwavelength observations including the Swift/Ultraviolet and Optical Telescope (UVOT). Our analysis also makes use of ultraviolet
Khushboo K Rao +2 more
exaly +4 more sources
The incidence of magnetism in blue and yellow straggler stars
Astronomy and AstrophysicsContext. Our understanding of the generation of magnetic fields in intermediate-mass and massive OBA stars remains limited. Some theories have proposed that their magnetic fields could be a result of strong binary interactions, including stellar mergers.
S Hubrig, I Ilyin, M Scholler
exaly +4 more sources
UOCS-IX. AstroSat/UVIT Study of the Open Cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their Membership [PDF]
The Astrophysical Journal, 2023 We present the first far-UV (FUV) imaging results of the intermediate-age Galactic open cluster NGC 2818 that has a planetary nebula (PN) within the field using images taken from the Ultra Violet Imaging Telescope (UVIT) aboard AstroSat.
Sharmila Rani +3 more
doaj +2 more sources
The Astronomical Journal, 2014 Binary stars in open clusters are very useful targets in constraining the nucleosynthesis process. The luminosities of the stars are known because the distances of the clusters are also known, so chemical peculiarities can be linked directly to the evolutionary status of a star.
J. V. Sales Silva +5 more
openaire +2 more sources
UOCS XIV: Study of the Open Cluster NGC 2627 Using UVIT/AstroSat
The Astronomical JournalWe study the intermediate-age open cluster NGC 2627, located at a distance of ∼2 kpc, using UVIT/AstroSat and other archival data. Using a machine learning-based algorithm, ML-MOC, on the Gaia DR3 data, we identify 422 cluster members, including four ...
Pinapati Saketh +2 more
doaj +2 more sources
The Astrophysical JournalWe present a focused multiwavelength study of blue straggler stars (BSSs) in the intermediate-age open cluster Tombaugh 2, located in the outer Galactic disk, to constrain the dominant formation pathways of BSSs in a low-density environment.
D. Bisht +9 more
doaj +2 more sources
The Astrophysical JournalThis study provides an in-depth analysis of the ancient open galactic cluster NGC 6253, characterized by the presence of both blue and yellow straggler stars.
Huanbin Chi, Feng Wang
doaj +2 more sources
A new, Gaia-based, catalogue of blue straggler stars in open clusters [PDF]
Astronomy & Astrophysics, 2021 Context. Blue straggler stars are exotic objects present in all stellar environments whose nature and formation channels are still partially unclear. They seem to be particularly abundant in open clusters (OCs), thus offering a unique chance to tackle ...
M. Rain, J. Ahumada, G. Carraro
semanticscholar +1 more source
UOCS. V. UV study of the old open cluster NGC 188 using AstroSat [PDF]
Journal of astrophysics and astronomy, 2021 We present the UV photometry of the old open cluster NGC188 obtained using images acquired with Ultraviolet Imaging Telescope (UVIT) on board the AstroSat satellite, in two far-UV (FUV) and one near-UV (NUV) filters.
S. Rani +5 more
semanticscholar +2 more sources
J01020100-7122208: an accreted evolved blue straggler that wasn't ejected from a supermassive black hole [PDF]
, 2021 J01020100-7122208 is a star whose origin and nature still challenges us. It was first believed to be a yellow super giant ejected from the Small Magellanic Cloud, but it was more recently claimed to be a red giant accelerated by the Milky Way's central ...
D. Brito-Silva +5 more
semanticscholar +1 more source