CVClient

石田 俊人

イシダ トシヒト  (Toshihito Ishida)

基本情報

所属
兵庫県立大学 自然・環境科学研究所宇宙天文系 准教授 (副センター長)
学位
理学博士(1990年3月 東北大学)

研究者番号
70382281
J-GLOBAL ID
202001007067032420
researchmap会員ID
R000009778

論文

 8
  • Toshihito Ishida
    Stars and Galaxies 06 2023年12月  査読有り筆頭著者責任著者
  • Toshihito Ishida
    Stars and Galaxies 03(3) 2020年12月  査読有り
  • Toshihito Ishida
    RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17(6) 2017年6月  査読有り
    A recently found double-mode Cepheid with the shortest known period in our Galaxy and abnormal period ratio, V371 Per, is investigated by linear nonadiabatic pulsation models. V371 Per is likely to be crossing the instability strip for the first time, because the mass derived from pulsation models is larger than the evolution mass for the second or higher crossing objects. This result seems to support the conclusion obtained from spectroscopic observation. We also found that models with observed period and period ratio of V371 Per need to have mass and T-eff in a narrow range which shifts as heavy element abundance Z changes. We have checked the agreement between T-eff ranges estimated observationally and derived from pulsation models using observational Z. We found that those ranges overlap marginally. We need more spectroscopic estimations of T-eff and [Fe/H], and more photometric monitoring to estimate the evolutional period change for confirmation of our result.
  • Takeuti Mine, Yamakawa Fusatoshi, Ishida Toshihito
    Publications of the Astronomical Society of Japan 44(2) p101-107 1992年5月  査読有り
  • Ishida Toshihito, Takeuti Mine
    Publications of the Astronomical Society of Japan 43(6) p795-807 1991年12月  査読有り

MISC

 1