간행물
천문학회지 KCI 등재 SCOPUS Journal of The Korean Astronomical Society
- 발행기관 한국천문학회
- 자료유형 학술지
- 간기 반년간
- ISSN 1225-4614 (Print)2288-890X (Online)
- 수록기간 1968 ~ 2024
- 주제분류 자연과학 > 천문학 자연과학 분류의 다른 간행물
- 십진분류KDC 440DDC 520
권호리스트/논문검색
제18권 제1호 (1985년 6월) 3건
1.
1985.06
구독 인증기관 무료, 개인회원 유료
We present the data of photoelectric photometric observations of BW Vul carried out for four nights during the period of 1982 ∼ 1984 . The light curves with asymmetric shape show a stillstand on the ascending branch at phase of ϕ ≈ 0.85 just before the maximum light, and also the ampitude and shape of light curves are changed from night to night. Using all the published data, a new ephemeris of maximum time is derived, in which the period of light variation is P = 0 d .20102977 and its increasing rate is 2.2 see/century.
4,500원
2.
1985.06
구독 인증기관 무료, 개인회원 유료
Making use of the arbitrary shock theory developed by Ulmschneider (1967, 1971) and Ulmschneider and Kalkofen (1978), we have calculated the dissipation rates of upward-travelling slow-mode acoustic shock waves in umbral chromospheres for two umbral chromosphere models, a plateau model by Avrett (1981) and a gradient model by Yun and Beebe (1984). The computed shock dissipation rates are compared with the radiative cooling rate given by Avrett (1981). The results show that the slow-mode acoustic shock waves with a period of about 20 second can heat the low umbral chromospheres travelling with a mechanical energy flux of 2.6 × 10 6 e r g / c m 2 s at a height of 300 ∼ 400 k m above the temperature minimum region.
5,100원
3.
1985.06
구독 인증기관 무료, 개인회원 유료
4,000원
