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Browsing by Author "George, K"

Browsing by Author "George, K"

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  • Revealing the nature of star forming blue early-type galaxies at low redshift 
    George, K; Zingade, K (EDP Sciences, 2015-11)
    Context. Star forming early-type galaxies with blue optical colours at low redshift can be used to test our current understanding of galaxy formation and evolution. Aims. We want to reveal the fuel and triggering mechanism ...
  • Significance of bar quenching in the global quenching of star formation 
    George, K; Subramanian, S; Paul, K. T (EDP Sciences, 2019-08)
    The suppression of star formation in the inner kiloparsec regions of barred disk galaxies due to the action of bars is known as bar quenching. We investigate here the significance of bar quenching in the global quenching ...
  • Smallest Scale Clumpy Star Formation in Stephan's Quintet Revealed from UV and IR Imaging 
    Joseph, P; George, K; Subramanian, S; Mondal, C; Subramaniam, A (IOP Publishing, 2022-09)
    The spatial distribution and physical sizes of star-forming clumps at the smallest scales provide valuable information on hierarchical star formation (SF). In this context, we report the sites of ongoing SF at ∼120 pc along ...
  • Star-forming, rotating spheroidal galaxies in the GAMA and SAMI surveys 
    Moffett, A. J; Phillipps, S; Robotham, A.S.G; Driver, S.P; Bremer, M.N; Cortese, L; Ivy Wong, O; Brough, S; Brown, Michael J. I; Bryant, Julia J; Conselice, Christopher J; Croom, Scott M; George, K; Goldstein, Greg; Goodwin, Michael; Holwerda, B.W; Hopkins, A.M; Konstantopoulos, I. S; Lawrence, J.S; Lorente, N.P.F; Medling, A. M; Owers, M.S; Pimbblet, K. A; Richards, S.N; Sweet, S. M; Van de Sande, J (Oxford University Press on behalf of the Royal Astronomical Society, 2019-08-12)
    The Galaxy And Mass Assembly (GAMA) survey has morphologically identified a class of ‘Little Blue Spheroid’ (LBS) galaxies whose relationship to other classes of galaxies we now examine in detail. Considering a sample of ...
  • Structural analysis of star-forming blue early-type galaxies Merger-driven star formation in elliptical galaxies 
    George, K (EDP Sciences, 2017-02)
    Context. Star-forming blue early-type galaxies at low redshift can give insight to the stellar mass growth of L⋆ elliptical galaxies in the local Universe. Aims. We wish to understand the reason for star formation in ...
  • Tracing the outer disk of NGC 300: an ultraviolet view 
    Mondal, Chayan; Subramaniam, A; George, K (Indian Academy of Sciences, 2019-07-11)
    We present an ultra-violet (UV) study of the galaxy NGC 300 using GALEX far-UV (FUV) and near-UV (NUV) observations. We studied the nature of UV emission in the galaxy and correlated it with optical, H I and mid-infrared ...
  • Ultraviolet imaging observations of three jellyfish galaxies: star formation suppression in the centre and ongoing star formation in stripped tails 
    George, K; Poggianti, B. M; Tomicic, N; Postma, J; Cote, P; Fritz, J; Ghosh, S. K; Gullieuszik, M; Hutchings, J. B; Moretti, A; Omizzolo, A; Radovich, M; Sreekumar, P; Subramaniam, A; Tandon, S. N; Vulcani, B (Oxford University Press on behalf of Royal Astronomical Society, 2023-02)
    Spiral galaxies undergo strong ram-pressure effects when they fall into the galaxy cluster potential. As a consequence, their gas is stripped to form extended tails within which star formation can happen, giving them the ...
  • UVIT imaging of WLM: demographics of star-forming regions in the nearby dwarf irregular galaxy 
    Mondal, Chayan; Subramaniam, A; George, K (IOP Publishing, 2018-09)
    We present a study of star-forming regions and their demographics in the nearby dwarf irregular galaxy WLM using Ultraviolet Imaging Telescope (UVIT) multiband observations in three filters, F148W, N245M, and N263M. We ...
  • UVIT observations of the star-forming ring in NGC 7252: Evidence of possible AGN feedback suppressing central star formation 
    George, K; Joseph, P; Mondal, Chayan; Devaraj, A; Subramaniam, A; Stalin, C. S; Cote, P; Ghosh, S. K; Hutchings, J. B; Mohan, Rekhesh; Postma, J; Sankarasubramanian, K; Sreekumar, P; Tandon, S. N (EDP Sciences, 2018-05)
    Context. Some post-merger galaxies are known to undergo a starburst phase that quickly depletes the gas reservoir and turns it into a red-sequence galaxy, though the details are still unclear. Aims. Here we explore the ...
  • UVIT view of ram-pressure stripping in action: Star formation in the stripped gas of the GASP jellyfish galaxy JO201 in Abell 85 
    George, K; Poggianti, B. M; Gullieuszik, M; Fasano, G; Bellhouse, C; Postma, J; Moretti, A; Jaffe, Y; Vulcani, B; Bettoni, D; Fritz, J; Cote, P; Ghosh, S. K; Hutchings, J. B; Mohan, Rekhesh; Sreekumar, P; Stalin, C. S; Subramaniam, A; Tandon, S. N (Oxford University Press on behalf of the Royal Astronomical Society, 2018-09)
    Jellyfish are cluster galaxies that experience strong ram-pressure effects that strip their gas. Their Hα images reveal ionized gas tails up to 100 kpc, which could be hosting ongoing star formation. Here, we report the ...

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