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  • Three- colour photometry of GH pegasi 
    Srivastva, R. K.; Padalia, T. D. (1974)
    The geometrical element of the system GH pegasi and a slightly improved period of 2ᵈ.556136 have been given.
  • Ballik-ramsey band in solar spectrum 
    Pande, M. C.; Sinha, K. (1974)
    Equivalent width calculations for a line 1.83 μ of the 0-0 vibrational band of the Ballik-Ramesy band system has been carried out in two photospheric models- BCA and HSRA. Centre to limb variation of the above line is given ...
  • Vibration-rotation bands of HF, HBr and HI in the sunspot spectrum 
    Pande, M. C.; Gaur, V. P. (1974)
    The calculated equivalent widths of R(7), R(9) and R(13) lines of 1-2 vibration-rotation band of HF for Henoux’s (1969) sunspot model suggest the presence of this band in sunspot spectrum. The reasons for the absence of ...
  • Nitric oxide in sunspots 
    Gaur, V. P. (1974)
    The calculated equivalent width of R₁ (26.5) line of the 0-1 vibration-rotation band of NO near 5.3 μm for the sunspot model of Stellmacher and Wiehr (1970) suggests the likelihood of the presence of this band in sunspot ...
  • A luminosity index for bright K0-K5 stars 
    Chaturvedi, J. P. (1974)
    An index for luminosity classification of K0-K5 stars based upon broad band UBRI observations has been obtained and discussed. This index has been employed to obtain the MK-luminosity classifications for 21 bright stars ...
  • Formation of C₂ molecules in solar atmosphere 
    Sihna, K.; Pande, M. C. (1974)
    It is shown that while the triplet states of Swan bands are populated through an LTE path, the singlet states of Phillilps bands are not. The problems regarding the observations of t he various bands of C₂ molecules in the ...
  • Fine structure in CaII K line 
    Punetha, L. M. (1974)
    CaII K line spectrograms were traced at various wavelengths along the slit and also along the dispersion at regular intervals. Statistical properties, root mean square variation, full width at half maxima, autocorrelation ...
  • Intensity oscillations across the Ca II K line 
    Punetha, L. M. (1974)
    Intensities at various wavelengths in the Ca II K line over a 10 minute duration time series spectra have been examined for oscillations. Three components have been observed: 1) large period, ≥1000 second, due to the ...
  • Flares on AD leonis and YZ minoris 
    Kapoor, R. C.; Sinvhal, S. D. (1974-06-24)
  • Variability of 59 Aur and 39 Cnc 
    Gupta, S. K.; Bhatnagar, A. K. (1974-07-14)
  • Photoelectric monitoring of the flars star AD Leo 
    Sanwal, B. B. (1974-10-14)
  • Three- colour photometry of the eclipsing binary EI cephei 
    Padalia, T. D.; Srivastava, R. K. (1975)
    The photoelectric elements of the system EI cephei have been determined U,B,V colours. The absolute dimensions have been determined and some evolutionary aspects have been discussed.A modified period of 8ᵈ.439334 has been ...
  • Three- colour photometry of TW CAS 
    Kandpal, C. D. (1975)
    Photoelectric elements of the system TW Cas have been determined in U,B and V filters. A refined period of 1ᵈ.428 324 77 has been given though no change in period is noticed. Spectroscopic elements given by struve have ...
  • Photoelectric elements of the eclipsing binary XY Ceti 
    Srivastava, R. K.; Padalia, T. D. (1975)
    The absolute elements of the system XY Ceti have been obtained on the basis of the spectroscopic elements given by Popper (1971) and the photoelectric elements derived by us. The colours of the components have been obtained. ...
  • The photoelectric elements of AS Camelopardalis 
    Padalia, T. D.; Srivastava, R. K. (1975)
    Improved geometrical elements of the system AS Cam have been obtained and the colour of the system has been discussed. The absolute dimensions have also been obtained on the basis of the spectroscopic elements given by ...
  • Flare activity of YZ CMi 
    Sanwal, B. B. (1975-05-14)
  • Vibration rotation bands of NO in sunspots 
    Gaur, V. P. (1976)
    The equivalent widths of R1(26.5)lines,belonging to the 1-0,2-1 and 3-2 vibration bands of NO near 5.3 µm,have been computed for two different sunspot models at four positions on the disc.The computed equivalent widths in ...
  • SH on the sun 
    Sinha, K.; Joshi, G. C.; Pande, M. C. (1976)
    The theoretical estimates of the abundances and intensities of the fraunhofer lines for various atomic and molecular species facilitate identification and clarify the role of blending produced by the nearby lines in the ...
  • Mulliken bands in the solar spectrum 
    Sinha, K.; Joshi, G. C. (1976)
    The lower X¹Σg state of the Phillips and of the Mulliken band system of C₂ molecule lies very close to the X¹ ³πᵤ' the lower electronic state of the Swan system observed in the photospheric spectrum.
  • Photoelectric elements of the binary system AO Monocerotis 
    Kandpal, C. D. (1976)
    A slightly improved period of 1. ͩ 884 761 9, has been given for the system AO Mon. Photoelectric elements have been computed in B and V filters. The orbit is found to be eccentric. Absolute elements have been derived by ...

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