تقرير
Systematic KMTNet Planetary Anomaly Search. I. OGLE-2019-BLG-1053Lb, a BuriedTerrestrial Planet
| العنوان: | Systematic KMTNet Planetary Anomaly Search. I. OGLE-2019-BLG-1053Lb, a BuriedTerrestrial Planet |
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| المؤلفون: | Weicheng Zang, Kyu-Ha Hwang, Andrzej Udalski, Tianshu Wang, Wei Zhu, Takahiro Sumi, Jennifer C. Yee, Andrew Gould, Shude Mao, Xiangyu Zhang, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Youn Kil Jung, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Sang-Mok Cha, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Przemek Mróz, Jan Skowron, Radoslaw Poleski, Michał K. Szymański, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, Mariusz Gromadzki, Ian A. Bond, Fumio Abe, Richard Barry, David P. Bennett, Aparna Bhattacharya, Martin Donachie, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Naoki Koshimoto, Man Cheung Alex Li, Yutaka Matsubara, Yasushi Muraki, Shota Miyazaki, Greg Olmschenk, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Hikaru Shoji, Stela Ishitani Silva, Daisuke Suzuki, Yuzuru Tanaka, Paul J. Tristram, Tsubasa Yamawaki, Atsunori Yonehara, Geoffery Bryden, B. Scott Gaudi, Samson Johnson |
| المصدر: | The Astronomical Journal. 162(4) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Astronomy |
| الوصف: | In order to exhume the buried signatures of “missing planetary caustics” in Korea Microlensing Telescope Network (KMTNet) data, we conducted a systematic anomaly search of the residuals from point-source point-lens fits, based on a modified version of the KMTNet Event Finder algorithm. This search revealed the lowest-mass-ratio planetary caustic to date in the microlensing event OGLE-2019-BLG-1053, for which the planetary signal had not been noticed before. The planetary system has a planet–host mass ratio ofq= (1.25±0.13) × 10−5. A Bayesian analysis yielded estimates of the mass of the host star, Mhost =-0.61+0.29 -0.24 Mo, the mass of its planet, Mplanet =-2.48 +1.19 -0.98 Mo, the projected planet – host separation, a^= 3.4 +0.5/-0.5 au, and the lens distance, DL =-6.8 +0.6 -0.90kpc.The discovery of this very-low-mass-ratio planet illustrates the utility of our method and opens a new window for a large and homogeneous sample to study the microlensing planet–host mass ratio function down to q∼ 10−5. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 1538-3881 0004-6256 |
| DOI: | 10.3847/1538-3881/ac12d4 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20220002206 |
| ملاحظات: | 399131 80GSFC21M0002 80NM0018D0004P00002 NSF11821303 NSF11761131004 MAESTRO 2014/14/A/ST9/00121 JSPS24253004 JSPS26247023 JSPS23340064 JSPS15H00781 JP16H06287 JP17H02871 JP19KK0082. JPL1571564 2019R1A2C2085965 2020R1A4A2002885 |
| رقم الأكسشن: | edsnas.20220002206 |
| قاعدة البيانات: | NASA Technical Reports |
| تدمد: | 15383881 00046256 |
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| DOI: | 10.3847/1538-3881/ac12d4 |