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  • Hypertelescope Approach: A Novel Method for Imaging of Stellar Objects 
    Saha, S. K (Optical Society of India, 2011)
    The diffraction limited phase retrieval of a degraded image is an important subject that is being implemented in other branches of physics too, for example, electron microscopy, wavefront sensing, and crystallography. A ...
  • Hypertelescope imaging 
    Saha, S. K (Anita Publications, 2011-03)
    Single aperture interferometry by means of speckle imaging has made inroads in several important fields in astrophysics. In recent years, the adaptive optics system at the telescope has produced spectacular results. ...
  • Hα full line spectropolarimetry as diagnostics of chromospheric magnetic field 
    Nagaraju, K; Sankarasubramanian, K; Rangarajan, K. E (Indian Academy of Sciences, 2020-12)
    Analysis of spectropolarimetric observations of two circular sunspots located close to disk centre in Hα (6562.8 Å) and Fe i (6569.22 Å) is presented in this paper. The corresponding active region numbers areNOAA 10940 and ...
  • H I kinematics of the Large Magellanic Cloud revisited: Evidence of possible infall and outflow 
    Indu, G; Subramaniam, A (EDP Sciences, 2015-01)
    Aims. The neutral atomic Hydrogen (H I) kinematics of the Large Magellanic Cloud (LMC) is revisited in light of two new proper motion estimates. Methods. We analysed the intensity weighted H I velocity maps of the Australia ...
  • i-Process nucleosynthesis: Observational evidences from CEMP stars 
    Goswami, P. P; Goswami, A (Indian Academy of Sciences, 2020-12)
    The surface chemical compositions of a large fraction of carbon-enhanced metal-poor (CEMP) stars, the so-called CEMP-r/s stars, are known to exhibit enhancement of both s-process and r-process elements. For these stars, ...
  • I. A. U Symposium No. 59 on Stellar Stability and Evolution 
    Sinvhal, S. D (Astronomical Society of India, 1973-09)
  • IAU Symposium on Fast Transients in X- and Gamma rays 
    Damle, S. V (Astronomical Society of India, 1975-09)
  • Identification of AlF Molecular Lines in Sunspot Umbral Spectra 
    Bagare, S. P; Balachandra Kumar, K; Rajamanickam, N (Springer, 2006-03)
    High resolution FTS sunspot umbral spectra from NSO/Kitt Peak were used to detect rotational lines due to 11 electronic transitions of the molecule AlF, in the wavelength region 4400 9000 Å. The presence of lines due to ...
  • Identification of beryllium hydride isotopomer lines in sunspot umbral spectra 
    Shanmugavel, R; Bagare, S. P; Rajamanickam, N; Balachandra Kumar, K (Astronomical Observatory, Serbia, 2008-06)
    A high resolution spectrum of FTS sunspot umbra of NSO/Kitt Peak was used to conduct a search for the molecular absorption lines due to BeH, BeD and BeT isotopomers. Analysis led to estimates of identification of the ...
  • Identification of CrH and CrD molecular lines in the sunspot umbral spectrum 
    Viswanathan, B; Shanmugavel, R; Bagare, S. P; Rajamanickam, N; Sriramachandran, P (Springer, 2009-07)
    High-resolution Fourier transform spectrometer sunspot umbral spectra obtained at the National Solar Observatory/Kitt Peak were used to identify molecular rotational lines arising from the infrared band systems of CrH and ...
  • Identification of emission bands in P/Halley 
    Bhattacharyya, J. C; Babu, G. S. D; Ghosh, K. K; Jayakumar, K; Appakutty, M (Indian Academy of Sciences, 1986)
    Spectrophotometric studies of P /Halley (r = 1.98 AU, Δ= 1.19AU, r = 1.97, Δ = 1.16 AU and r = 1.95 AU, Δ. = 1.13 AU) in the spectral range 3900 A - 6450 A were made on three nights and identifications of emission features ...
  • Identification of infrared sources in the IRAS circulars 
    Seal, P (Kluwer Academic Publishers, 1985-07)
    From IRAS (Infrared Astronomical Satellite) Circulars Nos. 4 to 15, 110 infrared sources have been identified. Out of these 110 identified sources 99 are galaxies, nine are nebulae, one is a dark object, and one is a ...
  • Identification of metal-poor stars using the artificial neural network 
    Giridhar, S; Goswami, A; Kunder, A; Muneer, S; Selvakumar, G (EDP Sciences, 2013-08)
    Context. Identification of metal-poor stars among field stars is extremely useful for studying the structure and evolution of the Galaxy and of external galaxies. Aims. We search for metal-poor stars using the artificial ...
  • Identification of new CeO features in the S star Pi Gruis 
    Murty, P. S (Gordon and Beach, Science Publishers, 1983)
    Spectrograms in the 6040-7300 A wavelength region of the S star Pi Gruis reveal the presence of new molecular features attributable to CeO. Measures of band heads compared reasonably well with the laboratory spectrum. The ...
  • Identification of SrF molecular lines in the spectrum of sunspot umbra 
    Sriramachandran, P; Shanmugavel, R; Bagare, S. P; Rajamanickam, N (Springer, 2009-09)
    A high resolution spectrum of a sunspot umbra is used for identification of rotational lines due to (0, 0) band of the A 2Π–X 2Σ+ system and (0, 0), (1, 1), and (2, 2) bands of the B 2Σ+–X 2Σ+ system of the molecule ...
  • Identification of the Source Region of a ``Halo'' Coronal Mass Ejection Using Meter-Wavelength Radio Data 
    Kathiravan, C; Ramesh, R (The American Astronomical Society, 2005-07)
    We present meter-wavelength observations of the solar corona close to the onset of the ``halo'' coronal mass ejection (CME) of 1998 January 21 and estimate the change in electron density with time through a reproduction ...
  • Identifying and selecting content for the Million Book Project 
    Birdie, C; Linke, Erika (IATUL (International Association of Scientific and Technological Universities Libraries, 2003)
    This paper focuses on collection development and implementation issues and challenges of the Million Book Project (MBP), an international digital library project. The project's objective is to create a free-to-read, ...
  • Identifying Li-rich giants from low-resolution spectroscopic survey 
    Bharat Kumar, Y; Reddy, B. E; Zhao, G (Indian Academy of Sciences, 2018-04)
    In this paper we discuss our choice of a large unbiased sample used for the survey of red giant branch stars for finding Li-rich K giants, and the method used for identifying Li-rich candidates using low-resolution spectra. ...
  • Identifying the population of T-Tauri stars in Taurus: UV–optical synergy 
    Nayak, Prasanta K; Narang, Mayank; Puravankara, Manoj; Tyagi, Himanshu; Banerjee, Bihan; Sharma, Saurabh; Pandey, Rakesh; Surya, Arun; Mathew, Blesson; Arun, R; Ujjwal, K; Kartha, Sreeja S (Indian Academy of Sciences, 2023-12)
    With the third data release of the Gaia mission, GaiaDR3with its precise photometry and astrometry, it is now possible to study the behavior of stars at a scale never seen before. In this paper, we developed new criteria ...
  • IIA astronomers for Shanghai 
    Ranganna, T. S (The Hindu, 2009-07-03)

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