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Browsing IIAP Publications by Title

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  • A catalogue of 108 extended planetary nebulae observed by GALEX 
    Pradhan, Ananta C; Panda, Swayamtrupta; Parthasarathy, M; Murthy, J; Ojha, Devendra K (Springer, 2019-10)
    We present the ultraviolet (UV) imaging observation of planetary nebulae (PNe) using archival data of Galaxy Evolution Explorer (GALEX). We found 358 PNe detected by GALEX in near-UV (NUV). We have compiled a catalogue of ...
  • A catalogue of the observations of the mutual phenomena of the Galilean satellites made in 1991 during the PHEMU91 campaign 
    Arlot, J. E; Ruatti, C; Thuillot, W; Arsenijevic, J; Baptista, R; Barroso, J; Bauer, C; Berthier, J; Blanco, C; Bouchet, P; Bourgeois, J; Bulder, H. J. J; Burchi, R; Cano, J. A; Casas, R; Chauvet, F; Chis, D; Colas, F; Colin, J; D'Ambrosio, V; de Angelis, G; de Benedetto, G; Denzau, H; Desbats, J. M; Descamps, P; Dipaolantonio, A; Dumitrescu, A; Farcas, L; Federspiel, M; Flatres, T; Froeschle, M; Gherega, O; Gomez-Forrellad, J. M; Guarro, J; Hainaut, O; Horvat, A; Helmer, G; Hube, D; Ito, Y; Kidger, M; Lecacheux, J; Le Campion, J. F; Le Floch, J. C; Mallama, A; Martin, B. E; Mellilo, J. F; Meyer, C; Molau, S; Montignac, G; Morando, B; Nicolet, B; Nitschelm, C; Oprescu, G; Piersimoni, A; Przewozny, D; Protitch-Benishek, V; Rapaport, M; Riou, A; Sacre, J. J; Sevre, F; Shkodrov, V; Souchay, J; Takami, H; Taylor, R; Tholen, D. J; Turcu, V; Vasundhara, R; Vidal, J; Vu, D. T; White, G; Wilds, R. P (EDP Sciences, 1997-11)
    In this paper, all the light-curves obtained during the PHEMU91 campaign of observations of the mutual phenomena of the Galilean satellites are presented. These observations give accurate astrometric positions of major ...
  • CatNorth: An Improved Gaia DR3 Quasar Candidate Catalog with Pan-STARRS1 and CatWISE 
    Fu, Yuming; Wu, Xue-Bing; Li, Yifan; Pang, Yuxuan; Joshi, Ravi; Zhang, Shuo; Wang, Qiyue; Yang, Jing; Ng, FanLam; Liu, Xingjian; Qiu, Yu; Zhu, Rui; Wang, Huimei; Wolf, Christian; Zhang, Yanxia; Huo, Zhi-Ying; Ai, Y. L; Ma, Qinchun; Feng, Xiaotong; Bouwens, R. J (American Astronomical Society, 2024-04)
    A complete and pure sample of quasars with accurate redshifts is crucial for quasar studies and cosmology. In this paper, we present CatNorth, an improved Gaia Data Release 3 (Gaia DR3) quasar candidate catalog with more ...
  • The cause of the so-called pole effect in the electric arc 
    Royds, T (Indian Institute of Astrophysics, Bangalore, 1916-12-02)
  • The cause of the so-called pole-effect in the electric arc 
    Royds, T (IOP Publishing, 1917-03)
  • CCD image data acquisition system for optical astronomy 
    Bhat, P. N; Patnaik, K; Kembhavi, A. K; Patnaik, A. R; Prabhu, T. P (CSIR, 1990-11)
  • CCD observations of the H-alpha line in late G and K supergiants and their interpretation 
    Mallik, S. G. V (American Astronomical Society, 1993-01-01)
    CCD echelle spectra of the H-alpha line at 6563 A have been obtained for a sample of 30 G and K supergiants with a spectral resolution of about 0.24 A. The data clearly indicate that the observed H-alpha profile is a deep ...
  • CCD Observations of the Total Solar Eclipse of October 24, 1995 
    Verma, V. K; Wahab Uddin; Gaur, V. P; Joshi, G. C; Bondal, K. R (Indian Institute of Astrophysics, Bangalore, 1997)
    The observations of the solar corona during the Total Solar Eclipse of October 24, 1995 were attempted in white light and in narrow band filters with peak wavelenghts centered at 5303 Armstrong (FeXIV) and at 6474 Armstrong ...
  • CCD photometry and spectroscopy of 14 IRAS sources having far-IR colours similar to Planetary Nebulae 
    Reddy, B. E; Parthasarathy, M (International Astronomical Union, 1997)
  • CCD Photometry and Spectroscopy of IRAS Sources Having Far-IR Colors Similar to Planetary Nebulae 
    Reddy, B. E; Parthasarathy, M (American Astronomical society, 1996-11)
    CCD imaging and BVRI photometry of 14 IRAS sources with far-IR colors similar to planetary nebulae and post-AGB stars are presented. Also results of optical and near -IR spectroscopy of 10 of these candidates are given. ...
  • 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 ...
  • CCD Photometry of NGC 2453 
    Mallik, D. C. V; Sagar, R; Pati, A. K (International Astronomical Union, 1993)
  • CCD photometry of the distant southern globular cluster NGC 5824 
    Cannon, R. D; Sagar, R; Hawkins, M. R. S (Royal Astronomical Society, 1990-03)
    A V, (B-V) C-M diagram for the distant globular cluster NGC 5824 is obtained from CCD observations of 285 stars reaching V = 20.5. Assuming a reddening of E(B-V) = 0.13, the color of the giant branch at the level of the ...
  • CCD photometry of the distant young open cluster NGC 7510 
    Sagar, R; Griffiths, W. K (Royal Astronomical Society, 1991-06)
    CCD observations in B, V, and I passbands have been used to generate deep V, (B-V), and V,(V-I) color-magnitude diagrams for the open cluster NGC 7510. The sample consists of 592 stars reaching down to V = 21 mag. There ...
  • CCD Photometry of the globular cluster M2. RR Lyrae physical parameters and new variables 
    Lazaro, C; Arellano Ferro, A; Arevalo, M. J; Bramich, D. M; Giridhar, S; Poretti, E (Wiley-Blackwell, 2006-10)
    We report the results of CCD V and R photometry of the RR Lyrae stars in M2. The periodicities of most variables are revised and new ephemerides are calculated. Light curve decomposition of the RR Lyrae stars was carried ...
  • CCD photometry of the globular cluster NGC 5466. RR Lyrae light-curve decomposition and the distance scale 
    Arellano Ferro, A; Rojas López, V; Giridhar, S; Bramich, D. M (Blackwell Synergy, 2008-03)
    We report the results of CCD V and r photometry of the globular cluster NGC 5466. The difference image analysis technique adopted in this work has resulted in accurate time-series photometry even in crowded regions of the ...
  • CCD Photometry of the Open Cluster BE 69 
    Pandey, A. K; Durgapal, A. K; Bhatt, B. C; Mohan, V; Mahra, H. S (International Astronomical Union, 1996)
    The morphological features of CMDs of Be 69 are better understood in terms of convective overshooting.The Comparison of CMDs with the convective overshoot models (Bertelli et al. 1994)produces a good fit for metallicity ...
  • CCD Photometry of the RR Lyrae Stars in NGC4147 
    Arellano Ferro, A; Arévalo, M. J; Lázaro, C; Rey, M; Bramich, D. M; Giridhar, S (Instituto de Astronomía, Universidad Nacional Autónoma de México, 2004-10)
    We report the results of CCD V and R photometry of the RRstars known in NGC4147. The periodicities of most variables are revised and new ephemerides are calculated. The Blazhko effect has been detected in V2 and V6. Three ...
  • CCD time-series photometry of the globular cluster NGC 5053: RR Lyrae, Blue Stragglers and SX Phoenicis stars revisited 
    Arellano Ferro, A; Giridhar, S; Bramich, D. M (Blackwell Publishing, 2010-02)
    We report the results of CCD V, r and I time-series photometry of the globular cluster NGC 5053. New times of maximum light are given for the eight known RR Lyrae stars in the field of our images, and their periods are ...
  • CCD time-series photometry of the globular cluster NGC 6981: variable star census and physical parameter estimates 
    Bramich, D. M; Figuera Jaimes, R; Giridhar, S; Arellano Ferro, A (Wiley-Blackwell, 2011-05)
    We present the results from 10 nights of observations of the globular cluster NGC 6981 (M72) in the V, R and I Johnson wavebands. We employed the technique of difference image analysis to perform precision differential ...

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