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Browsing by Author "Kuppuswamy, K"

Browsing by Author "Kuppuswamy, K"

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  • CCD observations of mutual events of Jovian satellites from VBO during 1997 
    Vasundhara, R; Chakraborty, P; Appakutty, M; Dinakaran, N; Ganeshan, M; Kuppuswamy, K; Moorthy, V; Muniyandi, A; Selvakumar, G; Velu, C; Ramana, K. V (Astronomical Society of India, 2001)
    CCD observations of the mutual events of the Galilean satellites of Jupiter from the Vainu Bappu Observatory during 1997 are presented. The derived times of close approach of the geometric centers of the satellites (satellite ...
  • Comet C/2004 Q2 (Machholz) 
    Sastri, J. H; Vasundhara, R; Kuppuswamy, K; Velu, C (International Astronomical Union, 2005-02)
  • Constraining the parameters of globular cluster NGC 1904 from its variable star population 
    Kains, N; Bramich, D. M; Figuera Jaimes, R; Arellano Ferro, A; Giridhar, S; Kuppuswamy, K (EDP Sciences, 2012-12)
    Aims. We present the analysis of 11 nights of V and I time-series observations of the globular cluster NGC 1904 (M 79). Using this we searched for variable stars in this cluster and attempted to refine the periods of known ...
  • A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry 
    Arellano Ferro, A; Bramich, D. M; Jaimes, R. F; Giridhar, S; Kains, N; Kuppuswamy, K; Jorgensen, U. G; Alsubai, K. A; Andersen, J. M; Bozza, V; Browne, P; Novati, S. C; Damerdji, Y; Diehl, C; Dominik, M; Dreizler, S; Elyiv, A; Giannini, E; Harpsoe, K; Hessman, F. V; Hinse, T. C; Hundertmark, M; Juncher, D; Kerins, E; Korhonen, H; Liebig, C; Mancini, L; Mathiasen, M; Penny, M. T; Rabus, M; Rahvar, S; Ricci, D; Scarpetta, G; Skottfelt, J; Snodgrass, C; Southworth, J; Surdej, J; Tregloan-Reed, J; Vilela, C; Wertz, O (Oxford University Press on behalf of the Royal Astronomical Society, 2013-09-11)
    We report CCD V and I time series photometry of the globular cluster NGC 6333 (M9). The technique of difference image analysis has been used, which enables photometric precision better than 0.05 mag for stars brighter than ...
  • Detection of a new Be Star - gamma Lup 
    Ghosh, K. K; Kuppuswamy, K; Jaykumar, K; Rosario, M. J; Velu, C (Konkoly Observatory, 1987-08)
  • Detection of additional absorption in the post-outburst spectra of MU Centauri 
    Ghosh, K. K; Kuppuswamy, K; Pukalenthi, S; Selvakumar, G (The American Astronomical Society, 1991-09)
    A large number of photographic (92) and CCD (27) spectra of the pole-on Be star, Mu Cen, were obtained between February 1987 and May 1990. From the results of the above-mentioned spectra a weak outburst was detected in ...
  • Discovery of a New Satellite of Uranus 
    Bhattacharyya, J. C; Kuppuswamy, K (Astronomical Society of India, 1977-03)
  • Discovery of asteroid number 4130 
    Rajamohan, R; Bhattacharyya, J. C; Kuppuswamy, K; Paranjpye, A; Moorthy, V; Vasundhara, R (Indian Academy of Sciences, 1989-09)
  • Exploring the variable stars in the globular cluster NGC 5024 (M53): new RR Lyrae and SX Phoenicis stars 
    Arellano Ferro, A; Figuera Jaimes, R; Giridhar, S; Bramich, D. M; Hernández Santisteban, J. V; Kuppuswamy, K (Wiley-Blackwell, 2011-09)
    We report CCD V and I time series photometry of the globular cluster NGC 5024 (M53). The technique of difference image analysis has been used which enables photometric precisions better than 10 mmag for stars brighter than ...
  • Large-scale Wind Structures in OB Supergiants: a Search for Rotationally Modulated Hα variability 
    Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T (Astronomical Society of India, 2003)
    We present preliminary results of a long-term spectroscopic monitoring of a sample of bright OB-supergiants aimed at establishing the incidence of co-rotating, large-scale wind structures by detecting rotationally modulated ...
  • Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability 
    Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T; Wood, E; Zimmerman, R (The Royal Astronomical Society, 2004-06)
    We present the results of a long-term monitoring campaign of the Hα line in a sample of bright OB supergiants (O7.5-B9) which aims at detecting rotationally modulated changes potentially related to the existence of large-scale ...
  • A new satellite of Uranus 
    Bhattacharyya, J. C; Kuppuswamy, K (Nature Publishing Group, 1977-05)
    During the observation of the occultation of the star SAO 158687 by Uranus on March 10, 1977, there occurred an unexpected event which suggests the existence of a hitherto unknown satellite of the planet. On the basis of ...
  • Occultation of 2UCAC 42376428 by (423) Diotima on 2005 March 06 
    Vasundhara, R; Kuppuswamy, K; Ramamoorthy, S; Velu, C; Venkataramana, A. K (Astronomical Society of India, 2006-03)
    Observations of the occultation of the star 2UCAC 42376428 by (423) Diotima on 2005 March 06 at the Vainu Bappu Observatory are reported. The observed mid time of the event at 15:12:25.1 UT occurred 3.4 s later than the ...
  • The PHEMU03 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter 
    Arlot, J. E; Thuillot, W; Ruatti, C; Ahmad, A; Amosse, A; Anbazhagan, P; Andreyev, M; Antov, A; Appakutty, M; Aubry, S; Asher, D; Spampinato, S. A; Stellmacher, I; Trunkovsky, E; Tejfel, V; Tudose, V; Turcu, V; Ugarte, I; Vantyghem, P; Vasundhara, R; Vaubaillon, J; Baron, N; Velu, C; Venkataramana, A. K; Vidal Sãinz, J; Vienne, A; Vilar, J; Vingerhoets, P; Vollman, W; Bassiere, N; Berthe, M; Bogdanovski, R; Bosq, F; Bredner, E; Buettner, D; Buromsky, M; Cammarata, S; Casas, R; Chis, G. D; Christou, A. A; Coquerel, J. P; Corlan, R; Cremaschini, C; Crussaire, D; Cuypers, J; Dennefeld, M; Descamps, P; Devyatkin, A; Dimitrov, D; Dorokhova, T. N; Dorokhov, N. I; Dourneau, G; Dueñas, M; Dumitrescu, A; Emelianov, N; Ferrara, D; Fiel, D; Fienga, A; Flatres, T; Foglia, S; Garlitz, J; Gerbos, J; Gilbert, R; Goncalves, R. M. D; Gonzales, D; Gorda, S. Y; Gorshanov, D. L; Hansen, M. W; Harrington, M; Irsmambetova, T. R; Ito, Y; Ivanova, V; Izmailov, I. S; Khovritchev, M. Y; Khrutskaya, E. V; Kieken, J; Kiseleva, T. P; Kuppuswamy, K; Lainey, V; Lavayssiere, M; Lazzarotti, P; Le Campion, J. F; Lellouch, E; Li, Z. L; Lo Savio, E; Lou, M; Magny, E; Manek, J; Marinello, W; Marino, G; McAuliffe, J. P; Michelli, M; Moldovan, D; Montagnac, S; Moorthy, V; Nickel, O; Nier, J. M; Noel, T; Noyelles, B; Oksanen, A; Parrat, D; Pauwels, T; Priban, V; Ramachandran, B; Rambaux, N; Rapaport, M; Rapavy, P; Rau, G; Sacre, J. J; Sada, P. V; Salvaggio, F; Sarlin, P; Sciuto, C; Selvakumar, G; Sergeyev, A; Sidorov, M; Sorescu, S (EDP Sciences, 2009-01)
    Context: In 2003, the Sun and the Earth passed through both the equatorial plane of Jupiter and therefore the orbital planes of its main satellites. Aims: During this period, mutual eclipses and occultations were observed ...
  • Photometry of intermediate polars AO PSC and V 1223 SGR 
    Padmini, V. N; Marar, T. M. K; Seetha, S; Padmanabhan, P; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C; Kuppuswamy, K; Rozario, M. J (Springer, 1985-12)
    We present optical photometric observations of the cataclysmic variables AO Psc and V 1223 Sgr, both of which are believed to contain slowly-rotating white-dwarf pulsars. These objectes belong to the new class of intermediate ...
  • Project Kalki - a Sky Survey with 45-CM Schmidt Telescope - I 
    Rajamohan, R; Bhattacharyya, J. C; Kuppuswamy, K; Paranjpye, A (Astronomical Society of Indian, 1987-12)
    A brief description of the sky survey project taken up with the 45 cm Schmidt telescope of the Vainu Bappu Observatory at Kavalur is given. Positions of 11 asteroids detected on plates taken during 1987 Feburary-March are reported
  • Project Kalki - A sky survey with the Schmidt telescope. 2 
    Rajamohan, R; Shankar, P. N; Bhattacharyya, J. C; Kuppuswamy, K; Paranjpye, A (Astronomical Society of Indian, 1988-03)
    The region of the sky photographed with the 45cm Schmidt telescope during 1987 March-May and the position of the asteroids detected on these plates are reported in this paper. Out of the 29 asteroids observed four have ...
  • Rapid H-alpha variability in Phi Persei 
    Ghosh, K. K; Sanjeevkumar, T; Jaykumar, K; Kuppuswamy, K; Rosario, M. J (Astronomical Society of the Pacific, 1988-06)
    A search for rapid variability of H-alpha with a time resolution from 30 to 45 seconds is performed for Phi Per. In total, 42 spectra in H-alpha were obtained during three nights. Results show the presence of rapid irregular ...
  • Recent onset of an outburst in mu centauri 
    Ghosh, K. K; Velu, C; Kuppuswamy, K; Jaykumar, K; Rosario, M. J (Konkoly Observatory, 1987-08)
  • Revisiting the variable star population in NGC 6229 and the structure of the horizontal branch 
    Arellano Ferro, A; Mancera Pina, P. E; Bramich, D. M; Giridhar, S; Ahumada, J. A; Kains, N; Kuppuswamy, K (Oxford University Press on behalf of the Royal Astronomical Society, 2015-09-01)
    We report an analysis of new V and I CCD time series photometry of the distant globular cluster NGC 6229. The principal aims were to explore the field of the cluster in search of new variables, and to Fourier decompose the ...

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