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Browsing by Subject "ultraviolet: stars"

Browsing by Subject "ultraviolet: stars"

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  • GlobULeS – V. UVIT/AstroSat studies of stellar populations in NGC 362: detection of blue lurkers in a globular cluster 
    Dattatrey, Arvind K.; Yadav, R. K. S.; Kumawat, Gourav; Rani, Sharmila; Singh, Gaurav; Subramaniam, Annapurni; Singh, Ravi S. (Monthly Notices of the Royal Astronomical Society Letters, 2023-07)
    We report the discovery of four blue lurkers with low- and extremely low mass white dwarf (ELM WD) companions in the Galactic globular cluster NGC 362 using AstroSat’s Ultra Violet Imaging Telescope (UVIT). We analysed ...
  • UOCS – VI. UVIT/AstroSat detection of low-mass white dwarf companions to four more blue stragglers in M67 
    Pandey, Sindhu; Subramaniam, Annapurni; Jadhav, Vikrant V. (Monthly Notices of the Royal Astronomical Society, 2021-10)
    Blue straggler stars (BSSs) in M67 have attracted attention from observations and theory to unravel their formation mechanisms. In the series of Ultra Violet Imaging Telescope (UVIT on AstroSat) study of Open clusters ...
  • UOCS –VIII. UV study of the open cluster NGC 2506 using ASTROSAT 
    Panthi, Anju,et.al.; Pandey, Sindhu (Monthly Notices of the Royal Astronomical Society, 2022-11)
    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 ...
  • X-Ray and Ultraviolet Flares on AT Microscopii Observed by AstroSat 
    Kuznetsov, A. A.; Karakotov, R. R.; Chandrashekhar, K.; Banerjee, D. (Research in Astronomy and Astrophysics, 2023-01)
    We present observations of the active M-dwarf binary AT Mic (dM4.5e+dM4.5e) obtained with the orbital observatory AstroSat. During 20 ks of observations, in the far-ultraviolet (130–180 nm) and soft X-ray (0.3–7 keV) spectral ...

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