Dr Seo-Won Chang
Ph.D. in Astronomy, Yonsei University (2014)
OzGrav/CGA Postdoc
ANU College of Science
Areas of expertise
- Stellar Astronomy And Planetary Systems 020110
- Astronomical And Space Sciences Not Elsewhere Classified 020199
- Programming Languages 080308
Research interests
- Gravitaional-Wave event, Fast Radio Bursts, and Gammy-Ray Burst follow-up observations;
- Cool Stars and Magnetic Activity: flares, spots, coronal mass ejection and age-rotation-activity relation;
- Open Clusters as Laboratories: stellar gyrochronology and angular momentum evolution;
- Large (spatial & temporal) Variability Surveys: variable stars, asteroids and meteors;
- Tools for Astronomical Big Data: high-precision time-series photometry, noise de-trending technique, machine learning algorithms and high-throughput distributed computing.
Biography
- OzGrav/CGA Post-doctoral Fellow, Australian National University (Jan 2019 ~ Present)
- CAASTRO Post-doctoral Fellow, Australian National University (Jan 2017 ~ Dec 2019)
- Post-doctoral researcher, Yonsei University Observatory (Sept 2014 ~ Dec 2016)
- Research assistant, Near-Earth Space Survey Group, Space Geodesy Division, Korea Astronomy and Space Science Institute (Jan 2008 ~ Dec 2008)
Researcher's projects
- SkyMapper Southern Sky Survey
- Alert follow-up for LIGO-Virgo O3 run
- DR3 WOMAT (Wide-field, Optical searches for M-dwarf Blue flares at Any Time) project
- DR3 WOMAT low-|B|urrow project
- DR3 dm-dt-filter classification algorithm for variables in preparation for LSST era
-
DR3 SkyMapper small bodies exploration
- KMTNet Thirty Minutes Time-domain (TMT) Follow-up Program, 2020
Publications
- Farah, W, Flynn, C, Bailes, M et al. 2018, 'FRB microstructure revealed by the real-time detection of FRB170827', Monthly Notices of the Royal Astronomical Society, vol. 478, no. 1, pp. 1209-1217pp.
- Shin, M, Chang, S, Yi, H et al. 2018, 'Detecting Variability in Massive Astronomical Time-series Data. III. Variable Candidates in the SuperWASP DR1 Found by Multiple Clustering Algorithms and a Consensus Clustering Method', The Astronomical Journal, vol. 156, no. 5, pp. 21pp.
- Anderson, J, Pessi, P, Dessart, L et al. 2018, 'A nearby super-luminous supernova with a long pre-maximum & "plateau" and strong C II features', Astronomy and Astrophysics, vol. 620, no. 67, pp. 1-16pp.
- Chang, S, Byun, Y, Shin, M et al 2018, 'NEW PHOTOMETRIC PIPELINE TO EXPLORE TEMPORAL AND SPATIAL VARIABILITY WITH KMTNET DEEP-SOUTH OBSERVATIONS', Journal of the Korean Astronomical Society, vol. 51, no. 5, pp. 129-142.
- Wolf, C, Onken, C, Luvaul, L et al 2018, 'SkyMapper Southern Survey: First Data Release (DR1)', Publications of the Astronomical Society of Australia, vol. 35, pp. 1-29.
- Chang, S, Byun, Y & Hartman, J 2015, 'A new method for robust high-precision time-series photometry from well-sampled images: Application to archival MMT/megacam observations of the open cluster M37', The Astronomical Journal, vol. 149, no. 4, pp. 135 (19pp).
- Chang, S, Byun, Y & Hartman, J 2015, 'A NEW CATALOG of VARIABLE STARS in the FIELD of the OPEN CLUSTER M37', The Astronomical Journal, vol. 150, no. 1, pp. 27 (19pp).
- Chang, S, Byun, Y & Hartman, J 2015, 'Photometric study on stellar magnetic activity. I. Flare variability of red dwarf stars in the open cluster M37', The Astrophysical Journal, vol. 814, no. 1, pp. 35 (20pp).
- Kim, D, Protopapas, P, Bailer-Jones, C et al. 2014, 'The EPOCH Project I. Periodic variable stars in the EROS-2 LMC database', Astronomy and Astrophysics, vol. 566, pp. A43 (19pp).
- Chang, S, Protopapas, P, Kim, D et al. 2013, 'STATISTICAL PROPERTIES OF GALACTIC delta SCUTI STARS: REVISITED', The Astronomical Journal, vol. 145, no. 5, pp. 132 (10pp).
- Chang, S, Byun, Y & Hahm, J 2012, 'Variability detection by change-point analysis', 5th Statistical Challenges in Modern Astronomy Symposium, SCMA 2011, Springer, University Park, PA, pp. 491-493pp.
- Shin, M, Yi, H, Kim, D et al. 2012, 'Detecting variability in massive astronomical time-series data. II. Variable candidates in the Northern Sky Variability Survey', The Astronomical Journal, vol. 143, no. 3, pp. -.
- Chang, S, Byun, Y & Kim, D 2012, 'Improved time-series photometry and calibration method for non-crowded fields: MMT megacam and HAT-south experiences', International Astronomical Union. Proceedings, vol. 7, no. 285, pp. 291-293.
