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

  • On the primary minimum of eclipsing binary AY Cam 
    Srivastava, J. B.; Kandpal, C. D. (1987)
    The eclipsing binary AY Cam (= BV 363 = BD + 77° 0328) was discovered by Strohmeier and Knigge (1961). They assigned it a period of 1ͩ. 367485. The photographic light curve is of Algol type with no indication of secondary ...
  • Intrinsic light variations in the eclipsing binary RW Ceti 
    Padalia, T. D. (1987)
    Intrinsic light variations in B and V filters have been found on the three observed light curves of RW Ceti.
  • CU Eridani - a suspected variable 
    Srivastava, J. B.; Srivastava, R. K. (1987)
    Photometric observations of CU Eridani, recently classified as non-variable, indicate it to be a variable star.
  • Possible ring system of neptune 
    Pandey, A. K.; Mahra, H. S. (1987)
    A re-analysis of the observations of occultation of MKE 31 by Neptune on September 12, 1983(Pandey et al., 1984) shows that the possible ring system of Neptune extends from 64400 km to 64190 km in Neptune's plane.
  • Study of periodic comet Encke during its application in1984 
    Goraya, P. S.; Rautela, B. S.; Sanwal, B. B. (1987)
    Scanner observations of the coma of periodic comet Encke (P/Encke) are presented for four nights in March 1984 during its post-perihelion period. The strong emission features of CN and C₂ modecules have been identified and ...
  • Period variations of the eclipsing system EE AquarII 
    Srivastava, R. K. (1987)
    The O-C diagrams of EE Aquarii have been presented for the first time, the period variations present in the system have been analysed, and tentative results have been presented. In all, four period decreases and three ...
  • Spectrophotometric observations and evolutionary status of ten Be stars 
    Singh, M.; Chaubey, U. S. (1987)
    The continuum energy distribution data of ten Be stars - namely, HR 1761, HR 1786, HR 1820, σOri, ω Ori, OT Gem, β Lyr, HR 7983, νCyg, and 59 Cyg- have been presented in the wavelength range λλ3200-8000 Å. The observed ...
  • Age distribution of open clusters as a function of their linear diameter and age-dependence of cluster masses 
    Pandey, A. K.; Bhatt, B. C.; Mahra, H. S. (1987)
    From the well-observed data of star clusters, the age distribution of galactic clusters is obtained as a function of their linear diameter and it is concluded that the observed age distribution of clusters for different ...
  • Period variation of BZ Eridani 
    Srivastava, R. K. (1987)
    The present letter contains some comments on the preceding communication by Kamper (1986) concerning the period variations of BZ Eridani.
  • A new period and period trend of IZ Persei 
    Srivastava, R. K. (1987)
    A new period (p = 3.ͩ687664) of the eclipsing binary system IZ Persei is given, based on 16 observed times of the minima. O-C diagrams of IZ Per have been presented for the first time, and the period variations have been ...
  • On the solar limb darkening in the wings of some atomic hydrogen lines 
    Bondal, K. R.; Gaur, V. P.; Pande, M. C. (1987)
    The centre-to-limb behaviour of the first four lines of the Balmer, Paschen, and Brackett series of atomic hydrogen at selected distances from the line centre, i.e. at Δλ = 5, 10, 20, and 30 Å has been theoretically ...
  • Spectral-luminosity classification, colour variations and suspected Beta Canis Majoris-type variability in IZ Persei 
    Srivastava, R. K. (1987)
    The colour indices and the spectrum-luminosity of the eclipsing binary system IZ Persei have been presented for the first time. The colour indices of the system appear reddened. Applying the interstellar reddening corrections, ...
  • A new period and period changes of GG Cassiopeiae 
    Srivastava, R. K. (1987)
    The O-C diagram of the eclipsing binary GG Cassiopeiae has been presented for the first time, and the period changes present in the system have been analysed. In all three period changes are noted. The strongest period ...
  • A new period and period changes in VZ Hydrae 
    Srivastava, R. K. (1987)
    A new period (P=2.ͩ9042997) of the eclipsing binary system VZ Hydrae has been given, which is based on all the available times of minima. The period based on the photoelectric epochs has also been presented. The O-C diagram ...
  • Eclipsing binary UW Bootis 
    Srivastava, J. B.; Kandpal, C. D. (1987)
    Photometric observations of primary minimum in U, B, and V filters have been discussed. The amplitude of variation in all three filter is 0.ͫ66. We do not find variations in the period and its revised value is 0.ͩ0047115.
  • Period study of GH Pegasi 
    Srivastava, R. K. (1987)
    The period study of the eclipsing binary system GH Pegasi has been presented for the first time. A new period (p=2.ͩ 556135) of GH Peg, based on all available times of minima, has been given, O-C diagrams of the system ...
  • Interstellar extinction and galactic structure 
    Pandey, A. K.; Mahra, H. S. (1987)
    Colour excesses and photometric distances of open clusters compiled by Janes & Adler and Lunga have been used to study the distribution of interstellar matter within a few kiloparsecs of the Sun. IN general the reddening ...
  • On the centre-to-limb variation of some visible and infrared atomic hydrogen lines in three facular models 
    Bondal, K. R.; Gaur, V. P. (1987)
    The centre-to-limb behaviour of the residual intensities in the line wings of Balmer, Paschen, and Brackett series lines (alpha to delta) in three facular models at four wing points has been investigated with a view to ...
  • Period study of XX Cassiopeiae 
    Srivastava, R. K. (1986)
    New period (P=3. ͩ 067182) of the eclipsing binary system XX Cassiopeiae has been given, which is based on theiry-nine minima. O-C diagram of XX Cas has been presented for the first time, and the period variations present ...
  • Scanner observations of comet P/Crommelin 18181 
    Goraya, P. S.; Sanwal, B. B.; Rautela, B. S. (1986)
    Spectral scans of the coma of comet P/Crommelin 18181 have been obtained in the wavelength range λ λ3200 -6500 Å. Strong emission features of CN (λ 3883Å) anc C₂ Swan bands (λ4695, λ5165 and λ5538 Å) have been identified. ...

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