The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 43 Issue 1
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- Pages.70.1-70.1
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- 2018
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- 1226-2692(pISSN)
Exploring the temporal and spatial variability with DEEP-South observations: reduction pipeline and application of multi-aperture photometry
- Shin, Min-Su (Korea Astronomy and Space Science Institute) ;
- Chang, Seo-Won (Australian National University) ;
- Byun, Yong-Ik (Yonsei University) ;
- Yi, Hahn (Yonsei University) ;
- Kim, Myung-Jin (Korea Astronomy and Space Science Institute) ;
- Moon, Hong-Kyu (Korea Astronomy and Space Science Institute) ;
- Choi, Young-Jun (Korea Astronomy and Space Science Institute) ;
- Cha, Sang-Mok (Korea Astronomy and Space Science Institute) ;
- Lee, Yongseok (Korea Astronomy and Space Science Institute)
- Published : 2018.05.08
Abstract
The DEEP-South photometric census of small Solar System bodies is producing massive time-series data of variable, transient or moving objects as a by-product. To fully investigate unexplored variable phenomena, we present an application of multi-aperture photometry and FastBit indexing techniques to a portion of the DEEP-South year-one data. Our new pipeline is designed to do automated point source detection, robust high-precision photometry and calibration of non-crowded fields overlapped with area previously surveyed. We also adopt an efficient data indexing algorithm for faster access to the DEEP-South database. In this paper, we show some application examples of catalog-based variability searches to find new variable stars and to recover targeted asteroids. We discovered 21 new periodic variables including two eclipsing binary systems and one white dwarf/M dwarf pair candidate. We also successfully recovered astrometry and photometry of two near-earth asteroids, 2006 DZ169 and 1996 SK, along with the updated properties of their rotational signals (e.g., period and amplitude).
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