This is the second paper on a systematic search for variable stars in Cyg OB3 region. In this paper we present the observational properties of 46 variable stars found in the region. Among them, 27 are eclipsing binaries and others are semi-long periodic or slow irregular variables. Only 5 are known variables and the rest are newly discovered ones. We have obtained the period and amplitude of 20 eclipsing binaries using the phase fitting method, and present the light curves of 46 variable stars.

ABSTRACT
1. 서론
2. 관측 및 분석 
3. 결과
    3.1. 식쌍성
    3.2. 장주기형 불규칙 변광성
4. 요약
참고 문헌

• 전영범(한국천문연구원/경북대학교) | Young-Beom Jeon (Korea Astronomy and Space Science Institute/Kyungbuk National University)
• 박윤호(한국천문연구원) | Yoon-Ho Park (Korea Astronomy and Space Science Institute)
• 이의렬(한국과학기술원) | UiRyeol Lee (Korea Advanced Institute of Science and Technology)
• 김동현(연세대학교) | DongHyeon Kim (Yonsei University)
• 장혜은(서울대학교) | Hyeeun Jang (Seoul National University)
• 조성윤(한국과학기술원) | SungYoon Cho (Seoul National University)