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Browsing by Author "Babu, G. S. D"

Browsing by Author "Babu, G. S. D"

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  • A study of faint young open clusters as tracers of spiral features in our Galaxy. III - Collinder 97 (OCl 506) 
    Babu, G. S. D (Indian Academy of Sciences, 1987-09)
    Photoelectric and photographic photometry of twenty-nine stars was done in the field of the open cluster Collinder 97 ≡ OCl 506. Of these stars, a total of twenty-four have been found to be possible members. There is ...
  • Study of Old Open Clusters NGC 1605, Czernik 18, NGC 2509 
    Sujatha, S; Babu, G. S. D (Astronomical Society of India, 2003)
    We present the first CCD photometric UBVRI observations of three open clusters NGC 1605 (OCI 406), Czernik 18 (OCI 426) and NGC 2509 (OCI 630) obtained by using the 1.02 m telescope at Vainu Bappu Observatory, Kavalur. ...
  • Study of open cluster NGC 2509. 
    Sujatha, S; Babu, G. S. D (Astronomical Society of India, 2003)
    We present the first CCD photometric observations of the open cluster ocl 630 (NGC 2509) in UBVRI filters. It is a fairly nearby cluster at a distance of 912±15 pc, and is placed in the direction of the Puppis constellation ...
  • A study of the open cluster NGC 2374 
    Babu, G. S. D (Indian Academy of Sciences, 1985-03)
    The results of modified objective grating observations and photoelectric as well as photographic photometry of the open cluster NGC 2374 are presented. The cluster contains at least twenty stars as definite members down ...
  • Study of young open clusters as tracers of spiral features in our Galaxy. IV - Czernik 20 (OC1 427) 
    Babu, G. S. D (Indian Academy of Sciences, 1989-09)
    Photoelectric and photographic photometry of 72 stars was done in the field of the not-well-studied open cluster Czernik 20 in the direction of the Auriga constellation. Of these stars, a total of 43 have been found to be ...
  • UBVRI CCD photometric studies of open clusters Berkeley 15, Czernik 18 and NGC 2401 
    Sujatha, S; Babu, G. S. D; Ananthamurthy, S (Astronomical Society of India, 2004-12)
    CCD photometric observations of three open clusters Berkeley 15 (=OCl 414), Czernik 18 (=OCl 426) and NGC 2401 (=OCl 588), obtained for the first time in UBVRI filters down to V=20 mag, are presented here. They are located ...
  • The variation of the 5200 feature in HD 34452 
    Shylaja, B. S; Babu, G. S. D (Royal Astronomical Society, 1986-10)
    Spectrophotometric observations of the hot Si star HD 34452 = HR 1732 obtained over a duration of four years, from 1979 to 1983, are presented. The period of variation in the broad-band feature centred around λ5200 is found ...
  • Variation of the Si II features in the chemically peculiar star - HD 115735 
    Sriraghavan, S. M; Jayakumar, K; Babu, G. S. D; Sujatha, S (Astronomical Society of India, 2004-06)
    The chemically peculiar star HD 115735 (= HR 5023 = 21 CVn) was observed with the 2.34 meter Vainu Bappu Telescope at Kavalur during the period of January 1999 to April 2000. A total of 47 spectrograms were obtained in the ...

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