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Browsing by Author "Chengalur, J. N"

Browsing by Author "Chengalur, J. N"

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  • The electron temperatures of HII regions S 201, S 206 and S 209 : Multi-frequency GMRT observations 
    Omar, A; Chengalur, J. N; Roshi, D. A (Astronomical Society of India, 2002-09)
    Three Galactic HII regions, viz., S 201, S 206, and S 209 have been imaged at three frequencies, viz., 232, 327, and 610 MHz using the GMRT. The resolutions of these images are typically 15" at 232, 10" at 327, and 6" ...
  • GMRT study of extremely faint dwarf irregular galaxies 
    Begum, A; Chengalur, J. N (Astronomical Society of India, 2004-09)
    We present results of deep, high velocity resolution (~1.6 km s-1) Giant Metrewave Radio Telescope (GMRT) HI 21 cm-line observations of a sample of extremely faint (MB > -12.5) dwarf irregular galaxies. unlike previous ...
  • Kinematics of two dwarf galaxies in the NGC 6946 group 
    Begum, A; Chengalur, J. N (EDP Sciences, 2004)
    We present high velocity resolution (~ 1.6 km s -1) Giant Meterwave Radio Telescope (GMRT) HI 21 cm synthesis images of the dwarf galaxies KK98 250 and KK98 251, as well as optical broad band images of KK98 250. We find ...

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