Introduction

The DEEP-South photometric census of small Solar System bodies produces 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 which have overlap with previously surveyed areas.

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 period ranging 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, JKAS) or ArXiv:1809.09451

Presentation file: PDF format

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.