Systematic KMTNet Planetary Anomaly Search. X. Complete Sample of 2017 Prime-field Planets

Authors

Yoon Hyun Ryu, Korea Astronomy and Space Science Institute
Andrzej Udalski, University of Warsaw
Jennifer C. Yee, Harvard-Smithsonian Center for Astrophysics
Weicheng Zang, Harvard-Smithsonian Center for Astrophysics
Yossi Shvartzvald, Weizmann Institute of Science Israel
Cheongho Han, Chungbuk National University
Andrew Gould, Max Planck Institute for Astronomy
Michael D. Albrow, University of Canterbury
Sun Ju Chung, Korea Astronomy and Space Science Institute
Kyu Ha Hwang, Korea Astronomy and Space Science Institute
Youn Kil Jung, Korea Astronomy and Space Science Institute
In Gu Shin, Harvard-Smithsonian Center for Astrophysics
Hongjing Yang, Tsinghua University
Sang Mok Cha, Korea Astronomy and Space Science Institute
Dong Jin Kim, Korea Astronomy and Space Science Institute
Seung Lee Kim, Korea Astronomy and Space Science Institute
Chung Uk Lee, Korea Astronomy and Space Science Institute
Dong Joo Lee, Korea Astronomy and Space Science Institute
Yongseok Lee, Korea Astronomy and Space Science Institute
Byeong Gon Park, Korea Astronomy and Space Science Institute
Richard W. Pogge, The Ohio State University
Hanyue Wang, Harvard-Smithsonian Center for Astrophysics
Przemek Mróz, University of Warsaw
Michał K. Szymański, University of Warsaw
Jan Skowron, University of Warsaw
Radek Poleski, University of Warsaw
Igor Soszyński, University of Warsaw
Paweł Pietrukowicz, University of Warsaw
Szymon Kozłowski, University of Warsaw
Krzysztof Ulaczyk, Faculty of Science, Engineering and Medicine
Krzysztof A. Rybicki, University of Warsaw
Patryk Iwanek, University of Warsaw
Marcin Wrona, University of Warsaw

Document Type

Article

Publication Date

3-1-2024

Abstract

We complete the analysis of planetary candidates found by the KMT AnomalyFinder for the 2017 prime fields that cover ∼13 deg². We report three unambiguous planets: OGLE-2017-BLG-0640, OGLE-2017-BLG-1275, and OGLE-2017-BLG-1237. The first two of these were not previously identified, while the last was not previously published due to technical complications induced by a nearby variable. We further report that a fourth anomalous event, the previously recognized OGLE-2017-BLG-1777, is very likely to be planetary, although its light curve requires unusually complex modeling because the lens and source both have orbiting companions. One of the three unambiguous planets, OGLE-2017-BLG-1275, is the first AnomalyFinder discovery that has a Spitzer microlens parallax measurement, πE ; 0.045 ± 0.015, implying that this planetary system almost certainly lies in the Galactic bulge. In the order listed, the four planetary events have planet-host mass ratios q and normalized projected separations s of (log q, s) = (-2.31, 0.61), (−2.06, 0.63/1.09), (−2.10, 1.04), and (−2.86, 0.72). Combined with previously published events, the 2017 prime fields contain 11 unambiguous planets with well-measured q and one very likely candidate, of which three are AnomalyFinder discoveries. In addition to these 12, there are three other unambiguous planets with large uncertainties in q.

Publication Source (Journal or Book title)

Astronomical Journal

Recommended Citation

Ryu, Y., Udalski, A., Yee, J., Zang, W., Shvartzvald, Y., Han, C., Gould, A., Albrow, M., Chung, S., Hwang, K., Jung, Y., Shin, I., Yang, H., Cha, S., Kim, D., Kim, S., Lee, C., Lee, D., Lee, Y., Park, B., Pogge, R., Wang, H., Mróz, P., Szymański, M., Skowron, J., Poleski, R., Soszyński, I., Pietrukowicz, P., Kozłowski, S., Ulaczyk, K., Rybicki, K., Iwanek, P., & Wrona, M. (2024). Systematic KMTNet Planetary Anomaly Search. X. Complete Sample of 2017 Prime-field Planets. Astronomical Journal, 167 (3) https://doi.org/10.3847/1538-3881/ad1888