Browsing by Title

Sort by: Order: Results:

  • Photometric calibration of the CCD camera of 1-m telescope at VBO 
    Mayya, Y. D (Indian Academy of Sciences, 1991-12)
    Calibration of the CCD camera of the 1-m telescope at the Vainu Bappu Observatory, Kavalur, to the BVR system is reported here based on the observations of stars in the 'dipper asterism' in the open cluster M 67 (NGC 2682). ...
  • Photometric Catalogs of Four EMSS Poor Clusters of Galaxies 
    Sharma, M; Prabhu, T. P (Astronomical Society of India, 2002-12)
    We have used the 2.3-meter Vainu Bappu Telescope to perform CCD imaging of X-ray-selected poor clusters of galaxies. Our sample consists of four X-ray luminous clusters in the Einstein Observatory Extended Medium ...
  • Photometric distances to dark clouds: cometary globule CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Royal Astronomical Society, 2004-12)
    A method for determining distances to dark clouds and Bok globules based on broad-band optical and near-infrared photometry is presented. In this method, intrinsic colour indices of stars projected towards the direction ...
  • Photometric distances to nine dark globules 
    Maheswar, G; Bhatt, H. C (Blackwell Publishing, 2006-07)
    Distances to nine dark globules are determined by a method using optical (VRI) and near-infrared (near-IR) (JHK) photometry of stars projected towards the field containing the globules. In this method, we compute intrinsic ...
  • Photometric elements, absolute dimensions and evolutionary status of the eclipsing binary HU Tauri 
    Parthasarathy, M; Sarma, M. B. K; Vivekananda Rao, P (Astronomical Society of India, 1993)
    The photometric elements of HU Tauri are derived from an analysis of its B and V light curve using the Wilson and Devinney (1971) light curve synthesis method. The photometric elements suggest that HU Tauri is a semi-detached ...
  • Photometric elements, absolute dimensions and evolutionary status of the eclipsing binary HU Tauri (HR 1471) 
    Parthasarathy, M; Sarma, M. B. K; Vivekananda, Rao P (The European Southern Observatory, 1995-05)
    The photometric elements of HU Tauri are derived from an analysis of its blue and visual light curves using the Wilson & Devinney (1971) light curve synthesis method. The photometric elements suggest that HU Tauri is a ...
  • Photometric Flash-Light Observations of SL9 Impact on Jupiter 
    Srivastava, R. K; Padalia, T. D; Mahra, H. S (Astronomical Society of India, 1997)
    The effect of SL9 impact on Jupiter has been assessed by observing flash-light effect on the nearest satellite of Jupiter, the Io, on 21 July, 1994. The observations in V filter of flash-light effect on Io suggest a ...
  • Photometric identification of compact galaxies, stars, and quasars using multiple neural networks 
    Chaini, Siddharth; Bagul, Atharva; Deshpande, Anish; Gondkar, Rishi; Sharma, Kaushal; Vivek, M; Kembhavi, Ajit (Oxford University Press on behalf of Royal Astronomical Society, 2023-01)
    We present MargNet, a deep learning-based classifier for identifying stars, quasars, and compact galaxies using photometric parameters and images from the Sloan Digital Sky Survey Data Release 16 catalogue. MargNet consists ...
  • Photometric identification of objects from Galaxy Evolution Explorer Survey and Sloan Digital Sky Survey 
    Preethi, K; Gudennavar, S. B; Bubbly, S. G; Murthy, J; Brosch, N (Oxford University Press on behalf of the Royal Astronomical Society, 2014-01-01)
    We have used Galaxy Evolution Explorer (GALEX) and Sloan Digital Sky Survey (SDSS) observations to extract seven band photometric magnitudes for over 80 000 objects in the vicinity of the North Galactic Pole. Although these ...
  • Photometric metallicity map of the large magellanic cloud 
    Choudhury, Samyaday; Subramaniam, A; Cole, A. A (Oxford University Press on behalf of the Royal Astronomical Society, 2016-01)
    We have estimated a metallicity map of the Large Magellanic Cloud (LMC) using the Mag- ellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data. This is a first of ...
  • Photometric metallicity map of the Small Magellanic Cloud 
    Choudhury, S; Subramaniam, A; Cole, A. A; Sohn, Y. J (Oxford University Press on behalf of the Royal Astronomical Society, 2018-04)
    We have created an estimated metallicity map of the Small Magellanic Cloud (SMC) using the Magellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data. This is a first ...
  • Photometric Observations of BW Vulpeculae 
    Singh, Mahendra; Joshi, S. C (Astronomical Society of India, 1983-06)
    Photometric observations of beta Cephei star BW Vul, secured on five nights, in B and V filters are given. A new ephemeris for the maxima of the five star and its rate of change of period has been derived.
  • Photometric observations of cataclysmic variables from UPSO, Naini Tal 
    Ashoka, B. N; Seetha, S; Marar, T. M. K; Raj, E; Kasturirangan, K; Mahra, H. S (Astronomical Society of India, 1998)
  • Photometric observations of solar corona during total solar eclipse of October 24, 1995 
    Kumar, S. S; Sharma, P; Devgun, C. B (Indian Institute of Astrophysics, Bangalore, 1997)
    Twenty pictures of solar corona were taken on October 24, 1995 from Bhind on the central line of totality, covering a wide range of exposure times a 500mm telephoto lens captured Images on 35mm film duly calibrated. This ...
  • Photometric observations of the AM CVn star EC 15330-1403 
    Seetha, S; Ashoka, B. N; Raj, E; Kasturirangan, K (Astronomical Society of India, 2000)
  • Photometric Observations of the X-Ray Dwarf Nova HL Canis Majoris 
    Seetha, S; Marar, T. M. K; Sharma, D. P; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (INSDOC, 1983-08)
    High speed optical photometric observations of the X-ray dwarf nova HL Canis Majoris (1E 0643-1648), discovered with the Einstein Observatory, are presented. Results of long term monitoring and attempts to detect photometric ...
  • Photometric Performance of the CCD Detector at the Kavalur 102-CM Reflector 
    Sagar, R; Pati, A. K (Astronomical Society of Indian, 1989-03)
    A CCD detector system built around the Thomson TH 7882 chip has recently been acquired for use at the 102 cm telescope at the Vainu Bappu Observatory (VBO). The chip has a coating for enhanced ultraviolet sensitivity, ...
  • Photometric performance of UPSO CCD system 
    Mohan, V; Paliwal, D. C; Mahra, H. S (Astronomical Society of India, 1991)
    The photometrics CCD system obtained by the Uttar Pradesh State Observatory is discussed. The calibration of the system is described and its photometric performance is evaluated based on photometric transformation coefficients
  • Photometric solution for the eclipsing binary TT Aurigae 
    Abhyankar, K. D; Rajasekhar Rao, N; Lokanadham, B (Astronomical Society of India, 1982-12)
    Photometric elements of TT Aur are derived from the UBV observations of the star during 1973-77. The system is found to be detached but quite close. Absolute dimensions are obtained on the basis of the spectroscopic element ...
  • Photometric studies of close binary systems 
    Varricatt, W. P (Astronomical Society of India, 2000)
    Two eclipsing binary stars of the Algol type, RZ Cassiopeiae and R Canis Majoris, are observed in the near IR photometric bands J and K and the light curves are analysed using the Wilson - Devinney light curve synthesis ...

Search DSpace

Browse

My Account