ARIES Insitutional Digital Repositary (ARIES-IDR): Recent submissions

  • The molecular envelope around the red supergiant VY CMa 
    Muller, S.; Dinh-V-Trung; Lim, J.; Hirano, N.; Muthu, C.; Kwok, S. (2007-02-20)
    We present millimeter interferometric observations of the molecular envelope around the red supergiant VY Cma with the Submillimeter Array (SMA). The high angular resolution (<2”) allows us to derive the structure of the ...
  • Companion event and precursor of the X17 flare on 28 October 2003 
    Mandrini, C. H.; Demoulin, P.; Schmieder, B.; Deluca, E. E.; Pariat, E.; Uddin, W. (2006-11-09)
    A major two-ribbon X17 flare occurred on 28 October 2003, starting at 11:01 UT in active region NOAA 10486. This flare was accompanied by the eruption of a filament and by one of the fastest halo coronal mass ejections ...
  • Near-infrared JH photometry of young open cluster Be 59 
    Sharam, S.; Ogura, K.; Pandey, A. K.; Ojha, D. K.; Bhatt, B. C. (2007)
    We present near-infrared JH photometry and optical slitless spectroscopy of stars in the field of the young cluster Be 59. The J/(J − H) colour-magnitude diagram of the cluster yields a distance modulus of (m − M )0 = ...
  • Age sequence in small clusters associated with bright-rimmed clouds 
    Ogura, K.; Chauhan, N.; Pandey, A. K.; Bhatt, B. C.; Ojha, D.; Itoh, Y. (2007-02-25)
    Bright-rimmed clouds (BRCs) found in H II regions are probable sites of triggered star formation due to compression by ionization/shock fronts, and it is hypothesized that star formation proceeds from the exciting star(s) ...
  • Multiwavelength studies of five chromospherically active stars 
    Pandey, J. C.; Singh, K. P.; Sagar, R.; Drake, S. A. (2007)
    We present a multiwavelength study of five chromospherically active stars, including newly obtained optical photometry, low-resolution optical spectroscopy, as well as archival X-ray observations. The bulk of the ...
  • North–South asymmetry of solar activity during Cycle 23 
    Joshi, B.; Pant, P.; Manoharan, P. K.; Pandey, K. (2007)
    In this paper, we have made a statistical analysis of solar Hα flares that occurred during the period 1996 to 2005 to investigate their spatial distribution with respect to northern and southern hemispheres of the Sun. The ...
  • Results from a spectroscopic survey in the CoRoT fields 
    Medhi, B. J.; Messina, S.; Parihar, P. S.; Pagano, I.; Muneer, S.; Duorah, K. (2007)
    In this paper we report the results of the spectroscopic survey we carried out to detect chromospheric activity of late-type stars in the fields of view of the CoRoT space mission. We give an accurate MK classification of ...
  • Broad-band optical polarimetric study of IC 1805 
    Medhi, B. J; Maheswar, G.; Brijesh, K.; Pandey, J. C.; Kumar, T. S.; Sagar, R. (2007)
    We present the BVR broad-band polarimetric observations of 51 stars belonging to the young open cluster IC 1805. Along with the photometric data from the literature, we have modelled and subtracted the foreground dust ...
  • Champagne flow and triggered star formation in NGC 1893 
    Maheswar, G.; Sharma, S.; Biman, J. M.; Pandey, A. K.; Bhatt, H. C. (2007)
    Using Hα grism spectroscopy and optical and Two-Micron All-Sky Survey photometry of the fields containing NGC 1893 and two emission nebulae, Sim 129 and Sim 130, we show the presence of a number of Hα and near-infrared ...
  • Observation of the optical afterglow of GRB 050319: The wind-to-ISM transition in view 
    Kamble, A.; Resmi, L.; Misra, K. (2007-07-20)
    The collapse of a massive star is believed to be the most probable progenitor of a long gamma-ray burst (GRB). Such a star is expected to have its environment modified by the stellar wind. The effect of such a ...
  • Multi-wavelength signatures of magnetic reconnection of a flare-associated coronal mass ejection 
    Joshi, B.; Manoharan, P. K.; Veronig, A. M.; Pant, P.; Pandey, K. (2007)
    The evolution of an X2.7 solar flare, that occurred in a complex βγ δ magnetic configuration region on 3 November 2003 is discussed by utilizing a multi-wavelength data set. The very first signature of pre-flare coronal ...
  • Further evidence for intra-night optical variability of radio-quiet quasars 
    Goyal, A.; Krishna, G.; Sagar, R.; Anupama, G. C.; Sahu, D. K. (2007)
    Although well established for BL Lac objects and radio-loud quasars, the occurrence of intra-night optical variability (INOV) in radio-quiet quasars is still debated, primarily since only a handful of INOV events with ...
  • Interstellar dust studies with TAUVEX 
    Maheswar, G.; Muthu, C.; Sujatha, N. V.; Pandey, G.; Bhatt, H. C.; Rao, N. K.; Murthy, J. (2007)
    We propose to carry out studies on the properties of inter- stellar dust using TAUVEX. Through the multi-band TAUVEX observations, particularly with the use of filters optimized for extinction observations of the 2175 ...
  • Helical eruptive prominence associated with a pair of overlapping CMEs on 21 April 2001 
    Ali, S. S.; Uddin, W.; Chandra, R.; Mary, D. L.; Vršnak, B. (2007)
    The eruption of limb prominence on 21 April 2001 associated with two coronal mass ejections (CMEs) is investigated. Hα images reveal two large-scale eruptions (a promi- nence body and a southern foot-point arch), both ...
  • Discovery of 6-minute oscillations in HD 151878 
    Tiwari, S. K.; Chaubey, U. S.; Pandey, C. P. (2007-08-17)
  • Stellar contents of two intermediate age clusters: NGC 1912 and NGC 1907 
    Pandey, A. K.; Sharma, S.; Upadhyay, K.; Ogura, K.; Sandhu, T. S.; Mito, H.; Sagar, R. (2007-06-25)
    We present CCD photometry in a wide field around two open clusters, NGC 1912 and NGC 1907. The stellar surface density profiles indicate that the radii of the clusters NGC 1912 and NGC 1907 are ~14́ and ~6́respectively. ...
  • 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 ...
  • Type IIP supernova SN 2004et: A multiwavelength study in X-ray, optical and radio 
    Misra, K.; Pooley, D.; Chandra, P.; Bhattacharya, D.; Ray, A. K.; Sagar, R.; Lewin, W. H. G. (2007)
    We present X-ray, broad-band optical and low-frequency radio observations of the bright type IIP supernova SN 2004et. The Chandra X-ray Observatory observed the supernova at three epochs, and the optical coverage spans ...
  • A study of the long-term evolution of quasi-periodic oscillations in the accretion-powered X-ray pulsar 4U 1626-67 
    Kaur, R.; Paul, B.; Kumar, B.; Sagar, R. (2008-04-01)
    We report here a study of the long-term properties of quasiperiodic oscillations (QPOs) in an unusual accreting X-ray pulsar, 4U 1626À67. This is a unique accretion-powered X-ray pulsar in which we have found the QPOs to ...
  • Mass functions and photometric binaries in nins open clusters 
    Sharma, S.; Pandey, A. K.; Ogura, K.; Aoki, T.; Pandey, K.; Sandhu, T. S.; Sagar, R. (2008-05)
    Using homogeneous CCD photometric data from the 105 cm Kiso Schmidt telescope covering a 50' × 50' field, we study the mass functions (MFs) of nine open clusters. The ages and Galactocentric distances of the target ...

Search ARIES-IDR

Browse

My Account