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Browsing by Author "Mondal, Soumen"

Browsing by Author "Mondal, Soumen"

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  • Magnetic fields and young stellar objects in cometary cloud L1616 
    Saha, Piyali; Archana Soam; Baug, Tapas; Maheswar, G; Mondal, Soumen; Ghosh, Tuhin (Oxford University Press on behalf of Royal Astronomical Society, 2022-06)
    The Lynds’ Dark Nebula (LDN) 1615/1616 and CB 28 (hereafter L1616) together form a cometary globule located at an angular distance of about 8◦ west of the Orion OB1 association, aligned roughly along the east–west direction, ...
  • Optical Spectroscopy of the Recurrent Nova RS Ophiuchi - from the Outburst of 2006 to Quiescence 
    Mondal, Anindita; Anupama, G. C; Kamath, U. S; Das, Ramkrishna; Selvakumar, G; Mondal, Soumen (Oxford University Press on behalf of the Royal Astronomical Society, 2018-03)
    Optical spectra of the 2006 outburst of RS Ophiuchi beginning one day after discovery to over a year after the outburst are presented here. The spectral evolution is found to be similar to that in previous outbursts. The ...
  • Photoionization modelling of quiescence-phase spectra of novae and a symbiotic star 
    Mondal, Anindita; Das, Ramkrishna; Anupama, G. C; Mondal, Soumen (Oxford University Press on behalf of the Royal Astronomical Society, 2020-02)
    Using observed and published spectra in the optical region, we have studied a handful of novae and symbiotic stars that show novae-like variability in the quiescence phase. We present results for the novae ...
  • Photometric variable stars in the young open cluster NGC 6823 
    Lata, Sneh; Chen, W. P; Pandey, J. C; Dileep, Athul; Ai, Zhong-Han; Hojaev, Alisher S; Panwar, Neelam; Joshi, Santosh; Mondal, Soumen; Biswas, Siddhartha; Bhatt, B. C (Oxford University Press on behalf of Royal Astronomical Society, 2023-03)
    We present stellar variability towards the young open cluster NGC 6823. Time series V- and I-band CCD photometry led to identification and characterization of 88 variable stars, of which only 14 have been previously ...

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