Browsing by Author "Sagar, R"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Open Access
    HD 12098 -A new northern hemisphere roAp star
    (2001) Girish, V; Seetha, S; Martinez, P; Joshi, S; Ashoka, B N; Kurtz, D W; Chaubey, U S; Gupta, S K; Sagar, R
    We present the analysis of 65 hours of high speed photometric observations of HD 12098 taken from State Observatory, Naini Tal and Gurushikhar Observatory, Mt. Abu on sixteen nights spanning from November 1999 to November 2000. HD 12098 is the first rapidly oscillating Ap star discovered from the "Naini Tal-Cape survey for northern hemisphere roAp stars". It is the 32nd in the complete list. HD 12098 exhibits one predominant mode of oscillation at
  • Thumbnail Image
    Item
    Open Access
    The Naini Tal -Cape survey for pulsations in chemically peculiarA-type stars: I. Methods and preliminary results
    (2001) Martinez, P; Kurtz, D W; Ashoka, B N; Chaubey, U S; Girish, V; Gupta, S K; Joshi, S; Kasturirangan, K; Sagar, R; Seetha, S
    A new survey for pulsating, chemically peculiar A- and F-type stars in the northern hemisphere has been initiated using the 1-m telescope at Uttar Pradesh State Observatory in Naini Tal. The survey is primarily structured to reveal high-overtone pulsations in chemically peculiar A-F stars, but it is also revealing low-overtone