IIAP Publications: Recent submissions

  • The RACE-OC project: Rotation and ACtivity Evolution in Open Clusters 
    Messina, S; Distefano, E; Parihar, P. S; Busa, I; Cutispoto, G; Lanza, A.F; Lanzafame, A; Pagano, I; Biazzo, K; Leto, G; Hatzidimitriou, D; Kim, S. -L; Koo, J. -R; Kang, Y. B (American Institute of Physics, 2009)
    The RACE‐OC project, standing for Rotation and Activity Evolution in Open Clusters, is a long‐term project aimed at studying the evolution of rotation and magnetic activity of late‐type members of stellar open clusters. ...
  • Complex Variations in the Line-Intensity Ratio of Coronal Emission Lines with Height above the Limb 
    Singh, J; Sakurai, T; Ichimoto, K; Watanabe, T (IOP Publishing, 2004-12-10)
    We obtained spectroscopic observations simultaneously in pairs of coronal emission lines, one line being [Fe X] λ6374 and the other line being [Fe XI] λ7892, [Fe XIII] λ10747, or [Fe XIV] λ5303, and we studied the variations ...
  • Photometric and spectroscopic evolution of supernova SN 2009an: another case of a transitional Type Ia event 
    Sahu, D. K; Anupama, G. C; Anto, P (Oxford University Press on behalf of the Royal Astronomical Society, 2013-04-01)
    We present optical UBVRI photometry and medium-resolution spectroscopy of a transitional Type Ia supernova, SN 2009an, over the period −6 to +150 d from the B maximum. With a Δm15(B) = 1.514 ± 0.132, SN 2009an declines ...
  • Effect of the solar eclipse on some atmospheric parameter 
    Rai, J; Rai, A; Kumar, A; Singh, A. K; Singh, M. P; Nigam, M. J (Indian Institute of Astrophysics, Bangalore, 1997)
    To study the solar terrestrial atmospheric parameters such as positive conductivity, negative conductivity, aerosols measurement for forward and backward scattering and atmospheric temperature were recorded at Roorkee ...
  • Record of extended corona using colour video 
    Saxena, A. K; Samson, J. P. A; Lancelot, J. P (Indian Institute of Astrophysics, Bangalore, 1997)
    The entire event of the total solar eclipse of October 24 1995 was vediographed at our Kalpi camp. We have used SONY handy cam Video 8 Model No. CCD FX 280E PAL attached with 12x variable zoom lens. Partial eclipse was ...
  • Response of the small-scale dynamics of lower F-region plasma over Kodaikanal to the total solar eclipse of October 24, 1995 
    Visweswara Rao, J. V. S; Sastri, J. H (Indian Institute of Astrophysics, Bangalore, 1997)
    Continuous and high-time resolution recording of the changes in phase path (Doppler frequency shift) of lower F-region reflections over Kodaikanal were made in the forenoon on October 24, 1995 and on several days prior to ...
  • F-region oscillations observed during October 24, 1995 solar eclipse at Waltair 
    Rao, B. M; Anhjaneyulu, P (Indian Institute of Astrophysics, Bangalore, 1997)
    Measurements of changes in phase path/Doppler of HF signals on 5.5 MHz from F-region of the ionosphere are carried-out using coherent pulsed Doppler radar. Preliminary analysis of the data show large deviations in phase ...
  • Observations of surface atmospheric electric potential gradient and boundary layer parameter during the total solar eclipse of October 24, 1995 
    Manohar, G. K; Kandalgaonkar, S. S; Vernekar, K. G; Trimbake, H. K (Indian Institute of Astrophysics, Bangalore, 1997)
    A study of the impact of a total solar eclipse (TSE) on surface atmospheric electricity was made using observations of surface electrical potential gradient and boundary layer parameters during the TSE of 24 October 1995 ...
  • NCSTC programme on total solar eclipse 1995 
    Kamble, V. B (Indian Institute of Astrophysics, Bangalore, 1997)
    NCSTC and Vigyan Prasar jointly undertook a country wide programme on S & T popularization built around the total solar eclipse (TSE) of October 24, 1995. The main objective of the program was to polarize astronomy in ...
  • Details of the expedition to Iradatganj during total solar eclipse of October 24, 1995 
    Bandyopadhyay, A; Pandey, P; Narayan, A; Biswas, C; Neogy, S (Indian Institute of Astrophysics, Bangalore, 1997)
    Equipment: Celestron C-14 Schmidt Cassegrain Telescope (14" diameter), off-axis 6" solar filter, ST6 CCD camera, Off-axis polaroid filter 6" rotatable in steps of 60 degree.
  • Colour photography of solar corona during the total solar eclipse of October 24, 1995 
    Gopalakrishna Reddy, M; Rama Rao, P. V. S; Krishna Rao, D. V (Indian Institute of Astrophysics, Bangalore, 1997)
    Very good color pictures of the solar corona of 24th October 1995 were taken by a team from Andra University, from Budge Budge, Calcutta. A total of 36 pictures recorded the various phases of the eclipse from the first to ...
  • Variation of light intensity during the total solar eclipse 
    Dutta, A (Indian Institute of Astrophysics, Bangalore, 1997)
    The variation of light intensity was recorded at Birla Industrial & technology Museum, Calcutta using a moving coli galvanometer and LDR on the eclipse day and one day prior to the eclipse. It was found that there was a ...
  • COSMOGRAIL: Measuring Time Delays of Gravitationally Lensed Quasars to Constrain Cosmology 
    Tewes, M; Courbin, F; Meylan, G; Kochanek, C. S; Eulaers, E; Cantale, N; Mosquera, A. M; Asfandiyarov, I; Magain, P; Van Winckel, H; Sluse, D; Keerthi, R. K. S; Stalin, C. S; Prabhu, T. P; Saha, P; Dye, S (ESO, 2012-12)
    COSMOGRAIL is a long-term programme for the photometric monitoring of gravitationally lensed quasars. It makes use of several medium-size telescopes to derive long and well-sampled light curves of lensed quasars, in order ...
  • ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared 
    Omont, A; Gilmore, G. F; Alard, C; Aracil, B; August, T; Baliyan, K; Beaulieu, S; Begon, S; Bertou, X; Blommaert, J. A. D. L; Borsenberger, J; Burgdorf, M; Caillaud, B; Cesarsky, C; Chitre, A; Copet, E; de Batz, B; Egan, M. P; Egret, D; Epchtein, N; Felli, M; Fouque, P; Ganesh, S; Genzel, R; Glass, I. S; Gredel, R; Groenewegen, M. A. T; Guglielmo, F; Habing, H. J; Hennebelle, P; Jiang, B; Joshi, U. C; Kimeswenger, S; Messineo, M; Miville-Deschenes, M. A; Moneti, A; Morris, M; Ojha, D. K; Ortiz, R; Ott, S; Parthasarathy, M; Perault, M; Price, S. D; Robin, A. C; Schultheis, M; Schuller, F; Simon, G; Soive, A; Testi, L; Teyssier, D; Tiphene, D; Unavane, M; van Loon, J. T; Wyse, R (EDP Sciences, 2003-06)
    The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history ...
  • Structure of the Large Magellanic Cloud from near infrared magnitudes of red clump stars 
    Subramanian, S; Subramaniam, A (EDP Sciences, 2013-04)
    Context. The structural parameters of the disk of the Large Magellanic Cloud (LMC) are estimated. Aims. We used the JH photometric data of red clump (RC) stars from the Magellanic Cloud Point Source Catalog (MCPSC) ...
  • Comprehensive abundance analysis of red giants in the open clusters NGC 2527, 2682, 2482, 2539, 2335, 2251 and 2266 
    Reddy, A. B. S; Giridhar, S; Lambert, D. L (Oxford University Press on behalf of the Royal Astronomical Society, 2013-06-01)
    We have analysed high-resolution echelle spectra of red giant members for seven open clusters in the Galactic anticentre direction to explore their chemical compositions. Cluster membership has been confirmed by radial ...
  • Observations and Modeling of the Emerging Extreme-Ultraviolet Loops in the Quiet Sun as Seen With the Solar Dynamics Observatory 
    Pradeep Chitta, L; Kariyappa, R; Van Ballegooijen, A. A; DeLuca, E. E; Hasan, S. S; Hanslmeier, A (IOP Publishing, 2013-05-01)
    We used data from the Helioseismic and Magnetic Imager (HMI) and the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) to study coronal loops at small scales, emerging in the quiet Sun. With HMI ...
  • India's National Large Solar Telescope 
    Hasan, S. S (Astronomical Society of the Pacific, 2012)
    India's 2-m National Large Solar Telescope (NLST) is aimed primarily at carrying out observations of the solar atmosphere with high spatial and spectral resolution. A comprehensive site characterization program, that ...
  • Planets in the early Universe 
    Shchekinov, Y. A; Safonova, M; Murthy, J (Springer, 2013-07)
    Several planets have recently been discovered around stars that are old and metal-poor, implying that these planets are also old, formed in the early Universe together with their hosts. The canonical theory suggests that ...
  • Is there lower limit to velocity or velocity change? 
    Sreenath, B.N; Arun, K; Sivaram, C (Springer, 2013-05)
    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays ...

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