Introduction

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 for faster access 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.

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 with a period range between 0.1 and 31 days, including four eclipsing binary systems (detached, over-contact, and ellipsoidal variables), one white dwarf/M dwarf pair candidate, and rotating variable stars.

We also successfully recovered astrometry (<+-1~2 arcsec level accuracy) and photometry of two targeted near-earth asteroids, 2006 DZ169 and 1996 SK, along with the small- (~0.12 mag) and relatively large-amplitude (~0.5 mag) variations of their dominant rotational signals in R-band.

* Paper 1 - "New Photometic Pipeline to Explore Temporal and Spatial Variability with KMTNet DEEP-South Observations" (Chang et al. 2018 submitted to JKAS) or ArXiv:

Download All the Light curves

VarID StarID (J2000.0) R (mag) Period (days) AmpR (mag) SDSS u (mag) SDSS g (mag) SDSS r (mag) SDSS i (mag) SDSS z (mag) Note
V1 (Sky-Map)(VSX)(APASS) SDSS J002013.16+052242.2 16.24 2.1038 0.06 19.66 17.35 16.21 15.71 15.35  
V2 (Sky-Map)(VSX)(APASS) SDSS J002031.74+055112.6 16.33 1.1568 0.04 20.26 17.72 16.38 15.78 15.43  
V3 (Sky-Map)(VSX)(APASS) SDSS J002051.80+042641.3 17.50 0.1538 0.13 19.59 18.10 17.48 17.25 17.15 ELV
V4 (Sky-Map)(VSX)(APASS) SDSS J002111.05+054856.4 18.60 1.5046 0.04 22.12 20.04 18.61 17.23 16.46  
V5 (Sky-Map)(VSX)(APASS) SDSS J002125.21+040357.0 16.79 31.5771 0.03 21.12 18.20 16.80 16.05 15.62  
V6 (Sky-Map)(VSX)(APASS) SDSS J002141.37+051626.1 16.76 22.4097 0.01 20.83 18.14 16.71 15.89 15.47  
V7 (Sky-Map)(VSX)(APASS) SDSS J002201.40+053612.5 18.35 0.3808 0.44 21.18 19.28 18.41 17.93 17.60 EB
V8 (Sky-Map)(VSX)(APASS) SDSS J002215.91+055338.9 20.19 0.1245 0.32 21.56 20.68 20.26 20.19 20.09 OC
V9 (Sky-Map)(VSX)(APASS) SDSS J002216.31+040439.5 19.59 23.4399 0.12 23.36 21.13 19.69 18.01 17.05  
V10 (Sky-Map)(VSX)(APASS) SDSS J002247.39+045147.8 18.11 2.9532 >0.49 19.19 18.04 18.09 18.17 18.27 EB
V11 (Sky-Map)(VSX)(APASS) SDSS J002249.03+055356.6 18.33 16.0571 0.04 22.39 19.82 18.34 17.33 16.79  
V12 (Sky-Map)(VSX)(APASS) SDSS J002314.27+042543.6 19.00 0.2673 0.16 23.05 20.33 18.97 17.58 16.75  
V13 (Sky-Map)(VSX)(APASS) SDSS J002351.64+054553.7 15.89 21.7415 0.02 19.84 17.10 15.88 15.41 15.12  
V14 (Sky-Map)(VSX)(APASS) SDSS J002425.52+044130.3 17.95 1.6484 0.10 20.22 18.64 17.89 17.54 17.38  
V15 (Sky-Map)(VSX)(APASS) SDSS J002435.70+051914.1 16.64 7.5176 0.03 19.04 17.30 16.59 16.30 16.13  
V16 (Sky-Map)(VSX)(APASS) SDSS J002516.12+053728.4 15.09 11.9412 0.02 18.82 16.14 15.07 14.68 14.46  
V17 (Sky-Map)(VSX)(APASS) SDSS J002549.95+041608.6 20.60 0.1234 0.10 23.56 21.98 20.54 19.66 19.13  
V18 (Sky-Map)(VSX)(APASS) SDSS J002610.07+043147.2 18.15 2.8856 0.02 22.81 19.64 18.12 16.73 15.95  
V19 (Sky-Map)(VSX)(APASS) SDSS J002701.84+040710.5 17.69 0.3570 0.03 18.46 18.02 17.66 16.78 16.15 WDMD
V20 (Sky-Map)(VSX)(APASS) SDSS J002704.93+040519.4 15.32 20.4821 0.02 18.45 16.20 15.38 15.08 14.89  
V21 (Sky-Map)(VSX)(APASS) SDSS J002733.09+043701.9 17.70 3.1778 0.04 21.41 19.15 17.66 16.57 15.99  

TODO: The following is a TODO list.

  1. Paper II: In the second paper of this series, we will present additional application example to search and identify moving objects with motion vectors.


History:

Mar 5, 2018: Published on-line catalog. N02007-OCVar Cat.