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Browsing IIAP Publications by Subject "ultraviolet: stars"

Browsing IIAP Publications by Subject "ultraviolet: stars"

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  • Breaking the habit: the peculiar 2016 eruption of the unique recurrent nova M31N 2008-12a 
    Henze, M; Darnley, M. J; Williams, S. C; Kato, M M; Hachisu, I; Anupama, G. C; Arai, A; Boyd, D; Burke, D; Ciardullo, R; Chinetti, K; Cook, L. M; Cook, M. J; Erdman, P; Gao, X; Harris, B; Hartmann, D. H; Hornoch, K; Chuck Horst, J; Hounsel, R; Husar, D; Itagaki, K; Kabashima, F; Kafka, S; Kaur, A; Kiyota, S; Kojiguchi, N; Kucakova, H; Kuramoto, K; Maehara, H; Mantero, A; Masci, F. J; Matsumoto, K; Naito, H; Ness, J.-U; Nishiyama, K; Oksanen, A; Osborne, J. P; Page, K. L; Paunzen, E; Pavana, M; Pickard, R; Prieto-Arranz, J; Rodri­guez-Gil, P; Sala, G; Sano, Y; Shafter, A. W; Sugiura, Y; Tan, H; Tordai, T; Vrastil, J; 22 others (IOP Publishing, 2018-04-10)
    Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an extreme object, with a massive white dwarf and a high accretion ...
  • Detection of White Dwarf companions to Blue Straggler Stars from UVIT observations of M67 
    Sindhu, N; Subramaniam, A; Geller, A. M; Jadhav, Vikrant; Knigge, Christian; Simunovic, Mirko; Leigh, Nathan; Shara, Michael; Puzia, T. H (Cambridge University Press, 2019-05)
    We investigate the old open cluster M67 using ultraviolet photometric data of Ultra-Violet Imaging Telescope in multi-filter far-UV bands. M67, well known for the presence of several blue straggler stars (BSS), has been ...
  • A multiwavelength view of the open cluster NGC 2527: discovery of active stars 
    Shah, N; Singh, K. P; Subramaniam, A (Oxford University Press on behalf of the Royal Astronomical Society, 2020-04)
    Star clusters are ideal platforms for categorizing X-ray emitting stars and to study X-ray emission as a function of stellar age and activity. We present a comprehensive study of an open star cluster, NGC 2527, by combining ...
  • Radial distribution of Blue Stragglers in NGC 5466 using AstroSat 
    Snehalata Sahu; Subramaniam, A (Cambridge University Press, 2019-05)
    We present the results obtained from Near-UV observations of the cluster NGC 5466 taken with UVIT onboard AstroSat to study the radial distribution of Blue Straggler Stars (BSSs), covering the cluster region up to a radius ...
  • UOCS – XI. Study of blue straggler stars in open cluster NGC 7142 using UVIT/AstroSat 
    Panthi, Anju; Vaidya, Kaushar; Vernekar, Nagaraj; Subramaniam, A; Jadhav, Vikrant; Agarwal, Manan (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    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.VI. UVIT/AstroSat detection of low-mass white dwarf companions to 4 more blue stragglers in M67 
    Pandey, Sindhu; Subramaniam, A; Jadhav, Vikrant V (Oxford University Press on behalf of the Royal Astronomical Society, 2021-10)
    Blue stragglers 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 ...
  • UVIT open cluster study. I. detection of a white dwarf companion to a blue straggler in M67: evidence of formation through mass transfer 
    Sindhu, N; Subramaniam, A; Jadhav, V. V; Chatterjee, Sourav; Geller, Aaron M; Knigge, Christian; Leigh, Nathan; Puzia, Thomas H; Shara, Michael; Simunovic, Mirko (IOP Publishing, 2019-09-01)
    The old open cluster M67, populated with blue straggler stars (BSSs), is a well-known test bed to study the BSS formation pathways. Here, we report the first direct detection of a white dwarf (WD) companion to a BSS in ...

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