تقرير
MOA-2020-BLG-135Lb: A New Neptune-class Planet for the Extended MOA-II Exoplanet Microlens Statistical Analysis
| العنوان: | MOA-2020-BLG-135Lb: A New Neptune-class Planet for the Extended MOA-II Exoplanet Microlens Statistical Analysis |
|---|---|
| المؤلفون: | Stela Ishitani Silva, Clément Ranc, David P. Bennett, Ian A. Bond, Weicheng Zang, Fumio Abe, Richard K. Barry, Aparna Bhattacharya, Gregory Olmschenk, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Naoki Koshimoto, Yutaka Matsubara, Sho Matsumoto, Shota Miyazaki, Yasushi Muraki, Arisa Okamura, Nicholas J. Rattenbury, Yuki Satoh, Takahiro Sumi, Daisuke Suzuki, Taiga Toda, Paul. J. Tristram, Aikaterini Vandorou, Hibiki Yama, Andreea Petric, Todd Burdullis, Pascal Fouqué, Shude Mao, Matthew T Penny, Wei Zhu, Gioia Rau |
| المصدر: | Astronomical Journal. 164(3) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Astronomy, Astrophysics |
| الوصف: | We report the light-curve analysis for the event MOA-2020-BLG-135, which leads to the discovery of a new Neptune-class planet, MOA-2020-BLG-135Lb. With a derived mass ratio of q=1.52+0.39-0.31x10-4 and separation s ≈ 1, the planet lies exactly at the break and likely peak of the exoplanet mass-ratio function derived by the Microlensing Observations in Astrophysics (MOA) Collaboration. We estimate the properties of the lens system based on a Galactic model and considering two different Bayesian priors: one assuming that all stars have an equal planet-hosting probability and the other that planets are more likely to orbit more-massive stars. With a uniform host mass prior, we predict that the lens system is likely to be a planet of mass mplanet= 11.3 +19.2 -6.9M⨁ and a host star of mass Mhost=0.23+0.39-0.14M⨀, located at a distance 𝐃𝐋=7.9+1.0-1.0 kpc. With a prior that holds that planet occurrence scales in proportion to the host-star mass, the estimated lens system properties are mplanet=25+22 -15 M⨁, M Mhost=0.53+0.42 -0,32 M⨀, and DL=8.3+0.9-1.0.This planet qualifies for inclusion in the extended MOA-II exoplanet microlens sample. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 1538-3881 0004-6256 |
| DOI: | 10.3847/1538-3881/ac82b8 |
| الوصول الحر: | https://ntrs.nasa.gov/citations/20230003795Test |
| ملاحظات: | 461108705 80GSFC21M0002 80HQTR21CA005 JSPS KAK-ENHI JSPS24253004 JSPS KAK-ENHI JSPS26247023 JSPS KAK-ENHI JSPS23340064 JSPS KAK-ENHI JSPS15H00781 JSPS KAK-ENHI JP16H06287 JSPS KAK-ENHI 17H02871 JSPS KAK-ENHI 19KK0082 JSPS KAKENHI 21J11296 NSF China 12133005 China Manned Space CMS-CSST-2021-A11 CFHT and CEA/DAPNIA Tsinghua UISR Program 2019Z07L02017 |
| رقم الانضمام: | edsnas.20230003795 |
| قاعدة البيانات: | NASA Technical Reports |
Full Text Finder | تدمد: | 15383881 00046256 |
|---|---|
| DOI: | 10.3847/1538-3881/ac82b8 |