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Characterization of Blue and Yellow Straggler Stars of Berkeley 39

The Astronomical Journal
We 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
Komal Chand, Khushboo K. Rao, Kaushar Vaidya, Anju Panthi   +3 more
doaj   +4 more sources

The incidence of magnetism in blue and yellow straggler stars

Astronomy and Astrophysics
Context. 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.
Ilya Ilyin, Markus Schoeller, Swetlana Hubrig   +2 more
exaly   +4 more sources

Characterization of blue and yellow straggler stars of Berkeley 39 using Swift/UVOT [PDF]

We characterize blue straggler stars (BSS) and yellow straggler stars (YSS) of an open cluster (OC) Berkeley 39 using multi-wavelength observations including Swift/UVOT. Our analysis also makes use of ultraviolet (UV) data from GALEX, optical data from Gaia DR3 and Pan-STARRS, and infrared data from 2MASS, Spitzer/IRAC, and WISE.
Chand, Komal, Rao, Khushboo, Vaidya, Kaushar, Panthi, Anju   +3 more
core   +4 more sources

UOCS-IX. AstroSat/UVIT Study of the Open Cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their Membership

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, Gajendra Pandey, Annapurni Subramaniam, N. Kameswara Rao   +3 more
doaj   +1 more source

HIGH-RESOLUTION SPECTROSCOPIC OBSERVATIONS OF BINARY STARS AND YELLOW STRAGGLERS IN THREE OPEN CLUSTERS : NGC 2360, NGC 3680, AND NGC 5822

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, V. J. Peña Suárez, O. J. Katime Santrich, C. B. Pereira, N. A. Drake, F. Roig   +5 more
openaire   +1 more source

UOCS XIV: Study of the Open Cluster NGC 2627 Using UVIT/AstroSat

The Astronomical Journal
We 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, Anju Panthi, Kaushar Vaidya   +2 more
doaj   +1 more source

A Search for Magnetically Active Binary Counterparts to Chandra X-Ray Sources in 47 Tucanae with HST Imaging

The Astrophysical Journal
Using Hubble Space Telescope (HST) imaging, we searched for candidate magnetically active binary (AB) counterparts to low-luminosity Chandra X-ray sources in the globular cluster 47 Tucanae (NGC 104). We consider the catalog of 300 Chandra sources within
Haldan N. Cohn, Phyllis M. Lugger, Craig O. Heinke, Maureen van den Berg, Liliana Rivera Sandoval, Jay Anderson   +5 more
doaj   +1 more source

WIYN Open Cluster Study. XC. Radial-velocity Measurements and Spectroscopic Binary Orbits in the Open Cluster NGC 2506

The Astronomical Journal
NGC 2506 is a rich, intermediate-age (2.0 Gyr), metal-poor ([Fe/H] ∼ −0.2) open cluster. This work presents the results of 12,157 spectroscopic radial-velocity measurements of 2442 stars in the NGC 2506 field obtained over 41 yr, made as part of the WIYN
Evan Linck, Robert D. Mathieu, David W. Latham   +2 more
doaj   +1 more source

A Thorough Exploration of the Metal-rich Massive Open Cluster NGC 6253: Focusing on Membership, Binaries, Stragglers, and Mass Function

The Astrophysical Journal
This 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   +1 more source

Multiwavelength Study of Blue Straggler Stars in Tombaugh 2: Evidence for Binary Mass Transfer and Constraints on Cluster Dynamical State

The Astrophysical Journal
We 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, Ing-Guey Jiang, K. Belwal, D. C. Çinar, Arvind K. Dattatrey, Geeta Rangwal, A. Raj, Shraddha Biswas, Mohit Singh Bisht, Alok Durgapal   +9 more
doaj   +1 more source