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  • Spectrophotometry of RZ Cas 
    Chaubey, U. S. (1996)
    Spectrum scans of the eclipsing binary star RZ Cas at different phases in the wavelength range λλ 3300 - 7600 Å taken through Hilger and Watts monochromator equipped with 104-cm telescope of Uttar Pradesh State Observatory, ...
  • Spectrophotometry of some Be Stars 
    Singh, M. (1986)
    The continuum energy distributions of six Be stars, namely 25 Cyg, 31 Peg, HR 8758, 14 Lac, 12 Vul and β Psc in the wavelength region λ λ3200-7800 Å, are presented. Comparing the observed energy distributions with those ...
  • Spectrophotometry of the comet C/2002 V1 (NEAT) 
    Sanwal, B. B.; Kumar, B.; Singh, M. (2004-03)
    The 1.2-m Schmidt telescope at IIalcakala found a comet on November 6, 2002 during the Near Earth Asteroid Tracking (NEAT)and it was reported by S.II.Pravdo. At the time of discovery its magnitude was around 17.3. Several ...
  • Spectrophotometry of the comets C/2000 WM1 (LINEAR) and C/2002 C1 (Ikeya-Zhang) 
    Sanwal, B. B.; Kumar, B.; Singh, M. (2002)
    Spectrophotometric observations of the coma of the comets C/2000 WM 1 (LINEAR) and C/2002 C1 (Ikeya-Zhang) were taken during Now, Dec 2001 and Mar, Apr 2002 respectively with 104-cm telescope of the State Observatory, ...
  • Spectrophotometry of V711 Tauri 
    Joshi, S. C.; Srivastava, R. K.; Srivastava, J. B. (1989)
    SPectrophotometric observations of the RS CVn binary system V711 Tau (HR 1099), covering the wavelength interval λλ3300-7100 Å, have been presented. A comparision of the standard spectral scans of V711 Tau with the spectral ...
  • A spectroscopic analysis of the chemically peculiar star HD207561 
    Joshi, S. et. al.; Joshi, Y. C. (2012)
    In this paper we present a high-resolution spectroscopic analysis of the chemically peculiar star HD207561. During a survey programme to search for new rapidly oscillating Ap (roAp) stars in the Northern hemisphere, Joshi ...
  • Spectroscopic reverberation mapping of Quasar PKS 0736 + 017: broad-line region and black-hole mass 
    Pandey, Shivangi; Rakshit, Suvendu; Woo, Jong-Hak; Stalin, C. S. (Monthly Notices of the Royal Astronomical Society, 2022-10)
    To understand the mass distribution and co-evolution of supermassive black holes with their host galaxy, it is crucial to measure the black hole mass of AGN. Reverberation mapping is a unique tool to estimate the black ...
  • Spectroscopic state of the Be Star ζ Tauri in 1976-1986 
    Mon, M.; Kogure, T.; Suzuki, M.; Singh, M. (1992)
    The long-term variations of the radial velocities (RV) of the shell absorption lines and the violet-to-red ratio (V/R) of the emission double peaks of ζ Tau are examined, based on spectrograms taken at the Okayama, ...
  • Spectroscopic studies of a few molecular bands in comets 
    Singh, M. (2008)
    Spectroscopic studies of comets were started at ARIES way back (some 35 years ago) and in this programme spectrophotometric observations of several comets were taken. The prominent emission features of CN (∆v = O) at 3883 ...
  • Spectroscopic study of the Be star phi persei 
    Singh, M.; Mon, M.; Kogure, T.; Suzuki, M. (1994)
    Based on a series of Coude spectra taken with the 188-cm reflector of the Okayama Astrophysical Observatory over an interval of 18 yr, the spectroscopic behavior in the Balmer and HeⅠ λ3888 lines of the binary Be star Ø ...
  • A spectroscopic study of the hybrid pulsator γ Pegasi 
    Pandey, C. P.; Morel, T.; Briquet, M.; Jaykumar, K.; Bisht, S.; Sanwal, B. B. (2011)
    The recent detection of both pressure and high-order gravity modes in the classical B-type pulsator γ Pegasi offers promising prospects for probing its internal structure through seismic studies. To aid further modelling ...
  • Spectroscopic survey of ASAS eclipsing variables: search for chromospherically active eclipsing binary stars – I 
    Parihar, P.; Messina, S.; Bama, P.; Medhi, B. J.; Muneer, S.; Velu, C.; Ahmad, A. (2009)
    We have started a spectroscopic survey to identify new chromospherically active components and low-mass pre-main sequence (PMS) stars in recently discovered All Sky Automated Survey (ASAS) eclipsing binaries. In this paper, ...
  • Spectroscopy of nine eruptive young variables using TANSPEC 
    Ghosh, Arpan; Shrama, Saurabh, et.al; Verma, Aayushi (Journal Astrophysical Astronomy, 2023-06)
    In recent times, 3.6m Devasthal Optical Telescope (DOT) has been installed with an optical to near infra-red spectrograph, TANSPEC, which provides spectral coverage from 0.55 to 2.5 microns. Using TANSPEC, we have obtained ...
  • The spectrum of periodic comet Encke 
    Goraya, P. S.; Sanwal, B. B.; Rautela, B. S. (1986)
    Periodic comet Encke (P/Encke) was observed spectrophotometrically during its apparition in 1984 march, before perihelion. We observed emission features due to CN and C₂ molecules, but sodium emission was absent from the ...
  • SS 433: Results of a recent multiwavelength campaign 
    Chakrabarti, S. K.; Anandarao, B. G.; Pal, S.; Mondal, S.; Nandi, A.; Bhattacharyya, A.; Mandal, S.; Sagar, R.; Pandey, J. C.; Pati, A.; Saha, K. (2005)
    We conducted a multiwavelength campaign in 2002 September–October, to observe SS 433. We used the Giant Meter Radio Telescope for radio observations, the Physical Research Laboratory Infrared Telescope at Mt Abu for infrared ...
  • ST Persei: a possible multi-body system 
    Srivastava, R. K. (1988)
    Detailed period study of the eclipsing binary ST Per is presented. A new period (P=2.ͩ 648339) is given. Period changes in different portions of the O-C diagram with a new period have been estimated. The total changes in ...
  • Star formation activity in the galactic H II complex S255-S257 
    Ojha, D. K. (IOP, 2011)
    We present results on the star formation activity of an optically obscured region containing an embedded cluster (S255-IR) and molecular gas between two evolved H II regions, S255 and S257. We have studied the complex using ...
  • 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 and young population of the HII complex Sh2-294 
    Samal, M. R.; Pandey, A. K.; Ojha, D. K.; Chauhan, N.; Jose, J.; Pandey, B. (2012)
    The Sh2-294 Hii region ionized by a single B0V star features several infrared excess sources, a photodissociation region, and also a group of reddened stars at its border. The star formation scenario in this region seems ...
  • Star formation efficiency in clouds of various masses 
    Pandey, A. K.; Paliwal, D. C.; Mahra, H. S. (1990)
    The present study is aimed at finding out the effect of variation of the initial mass function (IMF) on star - formation efficiency (SFE) in clouds of various masses. Using the model of Elmegreen and Clemans, it is found ...

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