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
제45권 제5호 (2012년 10월) 3건
1.
2012.10
구독 인증기관 무료, 개인회원 유료
We present a mathematical model that predicts the variation of illuminance during a solar eclipse, considering continuous effects of limb darkening. We assume that (1) the Sun and the Moon constitute perfect spheres, (2) the Moon crosses the Sun with a constant apparent velocity, and (3) sunspots, prominences, and coronae can be neglected. We compare predictions of this model with actual measurements made by Mollmann & Vollmer (2006) during a total solar eclipse in Turkey, and with predictions of existing models. The new model is shown to describe the actual phenomenon more accurately than existing models.
4,000원
2.
2012.10
구독 인증기관 무료, 개인회원 유료
We present 12CO J = 2-1 line observations of G54.1+0.3, a composite supernova remnant with a mid-infrared (MIR) loop surrounding the central pulsar wind nebula (PWN). We map an area of 12′×9′ around the PWN and its associated MIR loop. We confirm two velocity components that have been proposed to be possibly interacting with the PWN/MIR-loop; the +53 km s−1 cloud, which appears in contact with the eastern boundary of the PWN and the +23 km s−1 cloud, which has CO emission coincident with the MIR loop. However, we have not found a direct evidence for the interaction in either of these clouds. Instead, we detected an 5'-long arc-like cloud at +15-+23 km s−1 with a systematic velocity gradient of ~3 km s−1 arcmin−1 and broad-line emitting CO gas with widths (FWHM) of ≤7kms−1 in the western interior of the supernova remnant. We discuss their association with the supernova remnant.
4,000원
3.
2012.10
구독 인증기관 무료, 개인회원 유료
4,300원
