OBSERVATIONS OF THE J=1→0 TRANSITIONS OF 12CO, 13CO and C18O TOWARD OMC-1

H. J. SONG; M. S. CHUN; Y. C. MINH

논문 상세보기

OBSERVATIONS OF THE J=1→0 TRANSITIONS OF 12CO, 13CO and C18O TOWARD OMC-1 KCI 등재 SCOPUS

H. J. SONG, M. S. CHUN, Y. C. MINH

언어ENG
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천문학회지 (Journal of The Korean Astronomical Society)

제26권 제1호 (1993.06)
pp.65-72

한국천문학회 (Korean Astronomical Society)

초록

Using the Daeduk Radio Telescope, we have observed J = 1 → 0 transitions of 1 12 C O , 13 C O a n d C 18 O toward OMC-l. The column densities of 1 \~ 5 × 10 17 c m − 2 a n d 1 \~ 3 × 10 16 c m − 2 have been derived, for 13 C O and C 18 O , respectively, in the 11 ′ × 11 ′ region centered at Orion - KL. The double isotope ratio [ 13 C O ] / [ C 18 O ] was found to be larger than the cosmic abundance ratio by factors of 2 \~ 10 which may result from the chemical fractionation effect.

키워드

interstellar cloud interstellar molecule-Orion nebula

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. OBSERVATIONS
Ⅲ. RESULTS
Ⅳ. DISCUSSION
REFERENCES

저자

H. J. SONG(Department of Astronomy & Atmospheric Science, Yonsei University)
M. S. CHUN(Department of Astronomy & Atmospheric Science, Yonsei University)
Y. C. MINH(Daeduk Radio Astronomy Observatory, Korea Astronomy Observatory)

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