In ground-based astronomical spectroscopic observations, there are many telluric absorption lines that are laid on the spectra of celestial objects. To study the physical properties of the celestial objects with these contaminated spectra, the telluric lines should be removed. A conventional method for removing the telluric lines is using the standard stellar spectrum as telluric line. In this paper, we introduce a technique to calculate synthetic telluric spectra and use them to remove telluric lines from a spectrum of a celestial object. We used Line-by-Line Radiative Transfer Model (LBLRTM) for calculating a synthetic spectrum and selected Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) model as atmospheric model. We apply our method to some spectra obtained by Bohyunsan Observatory Echelle Spectrograph (BOES) to show that the telluric lines are well removed from the observed spectra by our model within an accuracy of 2% which is close to the 1-sigma rms of the original spectra.

ABSTRACT
1. 서론
2. 인공 흡수선 스펙트럼
    2.1. 복사전달 코드
    2.2. 대기 모델
    2.3. 분자 라인 데이터 베이스
3. 흡수선 스펙트럼 계산과정
    3.1. 관측환경에 따른 대기모델 수정
    3.2. LBLRTM을 이용한 스펙트럼 계산
    3.3. LBLRTM을 이용하여 계산한 결과 파일 변환
4. 흡수선 스펙트럼 피팅
5. 결과
    5.1. H2O 흡수선
    5.2. O2 흡수선
    5.3. 피팅한계
6. 토의
REFERENCES

• 정광희(한국천문연구원/과학기술연합대학원대학교) | GWANGHUI JEONG (Korea Astronomy and Space Science Institute/Astronomy and Space Science Major, University of Science and Technology)
• 한인우(한국천문연구원/과학기술연합대학원대학교) | INWOO HAN (Korea Astronomy and Space Science Institute/Astronomy and Space Science Major, University of Science and Technology)
• 이병철(한국천문연구원/과학기술연합대학원대학교) | BYEONG-CHEOL LEE (Korea Astronomy and Space Science Institute/Astronomy and Space Science Major, University of Science and Technology)