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Browsing by Author "Kameswara Rao, N"

Browsing by Author "Kameswara Rao, N"

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  • Are C60 Molecules Detectable in Circumstellar Shells of R Coronae Borealis Stars? 
    García-Hernández, D. A; Kameswara Rao, N; Lambert, D. L (IOP Publishing, 2011-03-10)
    The hydrogen-poor, helium-rich, and carbon-rich character of the gas around R Coronae Borealis (RCB) stars has been suggested to be a site for formation of C60 molecules. This suggestion is not supported by observations ...
  • Aspects of Observational Astronomy in India: The Vidyasankara temple at Sringeri 
    Kameswara Rao, N; Thakur, Priya (Centre for Astronomy, James Cook University, 2011-07)
    The navaranga in the medieval stone temple of Vidyasankara at Sringeri, built around A.D. 1350, has twelve zodiacal pillars arranged in a square with the zodiacal signs carved on them. It has been claimed that the morning ...
  • Aspects of prehistoric astronomy in India 
    Kameswara Rao, N (Astronomical Society of India, 2005-12)
    Some archeoastronomical aspects regarding the development of observational astronomy in India during prehistoric times are described. A plea is made for the preservation of megalithic monuments of possible astronomical ...
  • Astronomical orientations of the megalithic stone circles of Brahmagiri 
    Kameswara Rao, N (Astronomical Society of India, 1993-03)
    The megalithic stone circles at Brahmagiri which have been dated as 900 BC show clear astronomical orientations. The site lines from the center of a circle to an outer tangent of another circle points out to the directions ...
  • The astronomical significance of megalithic stone alignments at Vibhuthihalli in Northern Karnataka 
    Kameswara Rao, N; Thakur, Priya (Centre for Astronomy, James Cook University, 2010-03)
    A megalithic site at Vihuthihalli in Karnataka, India, contains alignments of stones that are arranged in a square pattern with rows and columns showing a diagonal arrangement. Such structures are non-sepulchral, and ...
  • The astronomical significance of ‘Nilurallu’, the megalithic stone alignment at Murardoddi In Aandhra Pradesh, India 
    Kameswara Rao, N; Thakur, Priya; Mallinathpur, Y (Centre for Astronomy, James Cook University, 2011-11)
    The stone alignment ‘Nilurallu' at Murardoddi is a megalithic monument containing standing stones of 12 to 16 feet high that are arranged somewhat in a squarish pattern. This is one of the stone alignments listed by Allchin ...
  • Astronomy with Buddhist stupas of Sanchi 
    Kameswara Rao, N (Astronomical Society of India, 1992)
  • Astronomy with Vainu Bappu Telescope 
    Kameswara Rao, N (Astronomical Society of India, 1995-09)
  • ASTROSAT mission 
    Singh, Kulinder Pal; Tandon, S. N; Agrawal, P. C; Antia, H. M; Manchanda, R. K; Yadav, J. S; Seetha, S; Ramadevi, M. C; Rao, A. R; Bhattacharya, D; Paul, B; Sreekumar, P; Bhattacharyya, S; Stewart, G. C; Hutchings, J; Subramaniam, A; Ghosh, S. K; Murthy, J; Pati, A. K; Kameswara Rao, N; Stalin, C. S; Girish, V; Sankarasubramanian, K; Vadawale, S; Bhalerao, V. B; Dewangan, G. C; Dedhia, D. K; Hingar, M. K; Katoch, T. B; Kothare, A. T; Mirza, I; Mukerjee, K; Shah, H; Shah, P; Mohan, Rekhesh; Sangal, A. K; Nagabhusana, S; Sriram, S; Malkar, J. P; Sreekumar, S; Abbey, A. F; Hansford, G. M; Beardmore, A. P; Sharma, M. R; Murthy, S; Kulkarni, R; Meena, G; Babu, V. C; Postma, J (SPIE--The International Society for Optical Engineering, 2014-07)
    ASTROSAT is India’s first astronomy satellite that will carry an array of instruments capable of simultaneous observations in a broad range of wavelengths: from the visible, near ultraviolet (NUV), far-UV (FUV), soft X-rays ...
  • AstroSat Study of the Globular Cluster NGC 2298: Probable Evolutionary Scenarios of Hot Horizontal Branch Stars 
    Rani, Sharmila; Pandey, G; Subramaniam, A; Chung, Chul; Sahu, S; Kameswara Rao, N (IOP Publishing, 2021-12-20)
    We present the far-UV (FUV) photometry of images acquired with UVIT on AstroSat to probe the horizontal branch (HB) population of the Galactic globular cluster NGC 2298. UV-optical color–magnitude diagrams (CMDs) are ...
  • Bhavnagar telescope: the most widely travelled telescope in the country 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-25)
    In the last decade of the 19th century Maharaja Takhtasingji Observatory was built at Poona (1888–1912) under the supervision of K. D. Naegamvala, with the grant from Maharaja of Bhavnagar (from where the name Bhavnagar ...
  • Breaking up of a comet by Jupiter 
    Kameswara Rao, N; Mayya, Y. D; Reddy, B. E; Prabhu, T. P (Astronomical Society of India, 1993-09)
  • C. Ragoonatha Charry and variable star astronomy 
    Kameswara Rao, N; Vagiswari, A; Thakur, P; Birdie, C (Centre for Astronomy, 2009-11)
    C. Ragoonatha Charry, the First Assistant at Madras Observatory from 1864 to 1880, was not only a noted Indian observational astronomer but also someone who emphasized the need for incorporating modern observationally-based ...
  • Ca II K Emission in Canopus 
    Bappu, M. K. V; Mekkaden, M. V; Kameswara Rao, N (Astronomical Society of India, 1984-06)
    The Changes in the Ca II K line profile of the F0 supergiant Canopus have been studied from the high dispersion coude spectrograms obtained since 1975. The emission in the core of the line is variable in a timescale of few ...
  • The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable 
    Garcia-Hernandez, D. A; Kameswara Rao, N; Lambert, David L; Eriksson, K; Reddy, A. B. S; Masseron, Thomas (American Astronomical Society, 2023-05-01)
    Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and Magellanic Clouds uncovered new DY Per ...
  • CCD photometry in VRI bands of the galactic cluster NGC 2818 
    Surendiranath, R; Kameswara Rao, N; Sagar, R; Nathan, J. S; Ghosh, K. K (Indian Academy of Sciences, 1990-06)
    The open cluster NGC 2818 containing a planetary nebula has been observed in VRI bands using the CCD system at prime focus of the 2.3 meter Vainu Bappu Telescope. The study extending to stars V of 21 magnitude established ...
  • Charles Michie Smith – founder of the Kodaikanal (Solar Physics) Observatory and beginnings of physical astronomy in India 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-10)
    It has been about 115 years since the establishment of Kodaikanal Observatory as an extension of the original Madras Observatory, which has evolved into the present Indian Institute of Astrophysics at Bangalore. It is ...
  • The chemical composition and circumstellar environment of the variable star QY sge 
    Goswami, A; Kameswara Rao, N; Lambert, D. L (Astronomical Society of the Pacific, 2004)
    Chemical composition studies of the variable star QY Sge show abundance anomalies suggestive of the pattern exhibited by the warmer RV Tau variables. Abundance analysis indicates a near-solar atmosphere with highly condensable ...
  • The chemical composition of the RV Tauri variable IW Carinae 
    Giridhar, S; Kameswara Rao, N; Lambert, D. L (The American Astronomical Society, 1994-12)
    Analysis of the RV Tauri star IW Carinae shows a photospheric composition unlike that reported previously for a few other RV Tau stars but resembling that of certain post-asymptotic giant branch stars (post-AGB) stars. IW ...
  • A comparison of synthetic and observed spectra for G-K dwarfs using artificial neural networks 
    Gulati, R. K; Gupta, R; Kameswara Rao, N (European Southern Observatory, 1997-06)
    A library of synthetic spectra, based on Kurucz model atmospheres, has been used to compare the spectroscopic observations in the wavelength range 4850-5384 Å by using statistical and supervised artificial neural network ...

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