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  • Carraro, G; Subramaniam, A; Janes, K. A (Royal Astronomical Society, 2006-09)
    In this paper, we present the first BV I CCD photometry of six overlooked old open clusters (Berkeley 44, NGC 6827, Berkeley 52, Berkeley 56, Skiff 1 and Berkeley 5) and derive estimates of their fundamental parameters by ...
  • Gehrels, Tom (Astronomical Society of India, 1984-03)
    Planetesimals are intermediate stages, in the kilometer size range between interstellar matter and large bodies such as planets and stars. Planetesimals can still be studied in the form of asteroids although they have been ...
  • Subramanian, P; Becker, P. A (Springer, 2006-08)
    We reexamine the energetics of nonthermal-electron acceleration in solar noise storms. A new result is obtained for the minimum nonthermal-electron number density required to produce a Langmuir-wave population of sufficient ...
  • Goyal, Arti; Gopal-Krishna; Sagar, R; Anupama, G. C; Sahu, D. K (Astronomical Society of India, 2007-06)
    Although well established for BL Lac objects and radio-loud quasars, the occurrence of intra-night optical variability (INOV) in radio-quiet quasars is still debated, primarily since only a handful of INOV events with good ...
  • Rao, A. S (Institute of Physics, 1932-09)
    By photographing the spectrum of arsenic by the method of the hollowcathode discharge in helium and in neon about 100 new lines have been recorded. In the light of the experimental data, the analysis of As I published by ...
  • Ashoka, B. N; Marar, T. M. K; Seetha, S; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (Kluwer Academic Publishers, 1993)
    We report time series photometric observations of PG 1012-029, conducted during 1990 and 1991. Light curves of three consecutive eclipses recorded in a single night are presented. The enhanced pre-eclipse hump in our data ...
  • Anupama, G. C; Prabhu, T. P; Ghosh, K. K; Ashoka, B. N; Giridhar, S (Elsevier, 1988)
    Spectroscopic observations of SN 1987a obtained during 1987 August 30 – September 8 from Vainu Bappu Observatory, Kavalur, are presented; the spectrum is compared and contrasted with the spectra recorded at earlier epochs. ...
  • Kameswara Rao, N; Venugopal, V. R; Patnaik, A. R (Indian Academy of Sciences, 1987-09)
    VLA observations at 6 cm have been obtained for three hydrogen-deficient objects (Upsilon Sgr, V 348 Sgr, and Abell 58). Abell 58 was also observed at 2 cm. Only upper limits to the flux density could be set for these ...
  • Sterling, Alphonse C; Moore, Ronald L; Panesar, Navdeep K; Samanta, T; Tiwari, Sanjiv K; Savage, Sabrina L (Frontiers, 2023-03)
    Solar coronal jets are frequently occurring collimated ejections of solar plasma, originating from magnetically mixed polarity locations on the Sun of size scale comparable to that of a supergranule. Many, if not most, ...
  • Birdie, C; Vagiswari, Alladi (Astronomical Society of the Pacific, 2003)
    The phenomenon of consortia or group of libraries buying e-information together has become very important in the last few years. This new scenario, along with new forms of purchasing and selling e-information, has led to ...
  • Kulkarni, A. G; Vivekananda Rao, P (Astronomical Society of India, 1977-09)
  • Bappu, M. K. V (Astronomical Society of India, 1974-03)
  • Bappu, M. K. V (Astronomical Soceity of India, 1974-06)
  • Marar, T. M. K (Indian Institute of Astrophysics, 1988)
    A brief outline of the prospects for carrying out X-ray and gamma ray observations of SN 1987A in the near future is presented in this paper.
  • Yadav, Jyoti; Mousumi, Das; Barway, Sudhanshu; Combes, Francoise (Oxford University Press on behalf of Royal Astronomical Society, 2023-11)
    We present a study of the morphology of star formation and the associated nuclear activity in a sample of eight closely interacting southern galaxies, which are in different stages of interaction, starting with nearly ...
  • Ghosh, Arpan; Sharma, Saurabh; Ninan, Joe P; Ojha, Devendra K; Bhatt, B. C; Kanodia, Shubham; Mahadevan, Suvrath; Stefansson, Gudmundur; Yadav, R. K; Gour, A. S; Pandey, Rakesh; Sinha, Tirthendu; Panwar, Neelam; Wisniewski, John P; Canas, Caleb I; Lin, Andrea S. J; Roy, Arpita; Hearty, Fred; Ramsey, Lawrence; Robertson, Paul; Schwab, Christian (American Astronomical Society, 2022-02-10)
    The Gaia Alert System issued an alert on 2020 August 28, on Gaia 20eae when its light curve showed a ∼4.25 magnitude outburst. We present multiwavelength photometric and spectroscopic follow-up observations of this source ...
  • Sariya, Devesh P; Jiang, Ing-Guey; Bisht, D; Yadav, R. K. S; Rangwal, Geeta (Elsevier B.V, 2023-01)
    In this paper, we have used the Gaia’s Data Release-3 (DR3) data to study an intermediate-age open cluster Berkeley 27 (Be 27). A total of 131 most probable cluster members are picked within the cluster’s radius based ...
  • Aoki, Wako; Matsuno, Tadafumi; Parthasarathy, M (Oxford University Press on behalf of the Astronomical Society of Japan, 2022-12)
    Using the Gaia Data Release 2 (DR2) and Early Data Release 3 (EDR3) data and list of post-AGB candidates, we investigate the parallax, proper motion, and binarity for 20 post-AGB stars and candidates that have high radial ...
  • Parthasarathy, M; Matsuno, T; Aoki, W (Oxford University Press on behalf of the Astronomical Society of Japan, 2020-12)
    From Gaia DR2 data of eight high-velocity hot post-AGB candidates, LS 3593, LSE 148, LS 5107, HD 172324, HD 214539, LS IV −12 111, LS III +52 24, and LS 3099, we found that six of them have accurate parallaxes which made ...
  • Parthasarathy, M (American Astronomical Society, 2022-02)
    Kamath et al. analyzed Gaia EDR3 data of 18 post-asymptotic giant branch (AGB) supergiants having overabundance of s-process elements, some of which exhibit unusually low luminosities in disagreement with expectations of ...

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