Browsing Department of Physics by Subject "Binaries: general"

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Field blue straggler stars: discovery of white dwarf companions to blue metal-poor stars using UVIT/AstroSat

Vaidya, Kaushar (OUP, 2023-08)

Blue metal-poor (BMP) stars are the main-sequence stars that appear bluer and more luminous than normal turn-off stars of metal-poor globular clusters. They are believed to be either field blue straggler stars (FBSS) formed ...
UOCS – XI. Study of blue straggler stars in open cluster NGC 7142 using UVIT/AstroSat

Vaidya, Kaushar (OUP, 2023-12)

We present a study of blue straggler stars (BSSs) of open cluster NGC 7142 using AstroSat/UVIT data and other archival data. Using a machine-learning-based algorithm, ML-MOC, on Gaia DR3 data, we find 546 sources as cluster ...
UOCS –VIII. UV study of the open cluster NGC 2506 using ASTROSAT

Vaidya, Kaushar (OUP, 2022-08)

We study an intermediate-age open cluster (OC) 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. Among ...
UOCS-XII. A study of open cluster NGC 6940 using UVIT/AstroSat cluster properties and exotic populations

Vaidya, Kaushar (OUP, 2023-12)

We study an open cluster NGC 6940 using AstroSat/UVIT (Ultraviolet Imaging Telescope) data and other archival data. This is an intermediate age cluster (∼1 Gyr), located at about 770 pc distance, harbouring several exotic ...

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