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Browsing by Author "Ghosh, S. K."

Browsing by Author "Ghosh, S. K."

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  • A multiwavelength study of galactic H II region Sh 2-294 
    Samal, M. R.; Pandey, A. K.; Ojha, D. K.; Ghosh, S. K.; Kulkarni, V. K.; Bhatt, B. C. (2007-12-10)
    We present the observational results of Galactic H II region Sh 2-294, using optical photometry, narrowband imaging, and radio continuum mapping at 1280 MHz, together with archival data from the 2MASS, MSX, and IRAS surveys. ...
  • A multiwavelength study of star formation in the vicinity of galactic H II region Sh2-100 
    Samal, M. R.; Pandey, A. K.; Ojha, D. K.; Ghosh, S. K.; Kulkarni, V. K.; Kusakabe, N.; Tamura, M.; Bhatt, B. C.; Thompson, M. A.; Sagar, R. (2010)
    We present multiwavelength investigation ofmorphology, physical-environment, stellar contents, and star formation activity in the vicinity of star-forming region Sh 2-100. It is found that the Sh 2-100 region contains ...
  • Near-infrared observations and optical identifications of a few unassociated IRAS sources with dust shells 
    Lyengar, K. V. K.; Ghosh, S. K.; Rengarajan, T. N.; Verma, R. P.; Joshi, S. C.; Srivastava, R. K. (1989)
    We have carried out near infrared observations of twenty six unassociated IRAS sources with dust shells. Twenty of these belong to the group that have IRAS low resolution spectral characteristic (LRSCHAR = 4n), classified ...
  • On infrared excess emission from HZ Herculis 
    Ghosh, S. K.; Iyengar, K. V. K.; Verma, R. P.; Srivastava, R. K. (1989)
    In an attempt to confirm the recently observed 1.6 µm excess emission from RZ Her (Gnedin et al. 1986), we report negative results from observations made at identical binary phase. Implications of these measurements have ...
  • Star formation activity in the galactic hii region Sh2-297 
    Mallick, K. K.; Ojha, D. K.; Samal, M. R.; Pandey, A. K.; Bhatt, B. C.; Ghosh, S. K.; Dewangan, L. K.; Tamura, M. (2012)
    We present a multiwavelength study of the Galactic Hii region Sh2-297, located in the Canis Major OB1 complex. Optical spectroscopic observations are used to constrain the spectral type of ionizing star HD 53623 as B0V. The ...
  • Star formation in young star cluster NGC 1893 
    Sharma, S.; Pandey, A. K.; Ojha, D. K.; Chen, W. P.; Ghosh, S. K.; Bhatt, B. C.; Maheswar, G.; Sagar, R. (2007)
    We present a comprehensive multiwavelength study of the star-forming region NGC 1893 to explore the effects of massive stars on low-mass star formation. Using near-infrared colours, slitless spectroscopy and narrow-band ...
  • Stellar contents and star formation in the young open cluster Stock 8 
    Jose, J.; Pandey, A. K.; Ojha, D. K.; Ogura, K.; Chen, W. P.; Bhatt, B. C.; Ghosh, S. K.; Minto, H.; Maheswar, G.; Sharma, S. (2008)
    We present UBVIc CCD photometry of the young open cluster Stock 8 with the aim of studying its basic properties such as the amount of interstellar extinction, distance, age, stellar contents and initial mass function ...
  • Stellar contents and star formation in the young star cluster Be 59 
    Pandey, A. K.; Sharma, S.; Ogura, K.; Ojha, D. K.; Chen, W. P.; Bhatt, B. C.; Ghosh, S. K. (2008)
    We present UBV Ic CCD photometry of the young open cluster Be 59 with the aim to study the star formation scenario in the cluster. The radial extent of the cluster is found to be ∼10 arcmin (2.9 pc). The interstellar ...
  • Triggered star formation and evolution of T-Tauri stars in and around bright-rimmed clouds 
    Chauhan, N.; Pandey, A. K.; Ogura, K.; Ojha, D. K.; Bhatt, B. C.; Ghosh, S. K.; Rawat, P. S. (2009)
    The aim of this paper is to quantitatively testify the ‘small-scale sequential star formation’ hypothesis in and around bright-rimmed clouds (BRCs). As a continuation of the recent attempt by Ogura et al., we have ...
  • Young brown dwarfs in the core of the W3 main star-forming region 
    Ojha, D. K.; Tamura, M.; Nakajim, Y.; Saito, H.; Pandey, A. K.; Ghosh, S. K.; Aoki, K. (2009-03-01)
    We present the results of deep and high-resolution (FWHM ∼ 0. 35) JHK near-infrared (NIR) observations with the Subaru telescope, to search for very low mass young stellar objects in the W3 Main star-forming region. The ...

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