KMT-2019-BLG-0842Lb: A Cold Planet Below the Uranus/Sun Mass Ratio (2019)
Authors
Alternative Title
A Cold Planet Below the Uranus/Sun Mass RatioAbstract
With $q=(4.09\pm 0.27) \times 10^{-5}$, KMT-2019-BLG-0842Lb is the second cold planet with planet-host mass ratio $q$ below that of Uranus relative to the Sun ($q=4.37\times 10^{-5}$), the first having been discovered only in 2018. Hence, such cold, sub-Uranus-ratio planets are probably not rare. We discuss possible improvements in the search for these planets. The Bayesian estimates for the host mass, planet mass, system distance, and planet-host projected separation are $M_{\rm host}=0.76\pm 0.40 M_\odot$, $M_{\rm planet}=10.3\pm 5.5 M_\oplus$, $D_L = 3.3\pm 1.3$ kpc, and $a_\perp = 3.3\pm 1.4$ AU, respectively. The blended light is plausibly due to the host star, an identification that could be tested by high resolution images taken during the next (2020) bulge season.
Citation
Jung YK, Udalski A, Zang W, Bond IA, Yee JC, Albrow MD, Chung S-J, Gould A, Han C, Hwang K-H, Ryu Y-H, Shin I-G, Shvartzvald Y, Cha S-M, Kim D-J, Kim H-W, Kim S-L, Lee C-U, Lee D-J, Lee Y, Park B-G, Pogge RW, Mróz P, Szymański MK, Skowron J, Poleski R, Soszyński I, Pietrukowicz P, Kozłowski S, Ulaczyk K, Rybicki KA, Iwanek P, Wrona M, Abe F, Barry R, Bennett DP, Bhattacharya A, Donachie M, Fujii H, Fukui A, Hirao Y, Itow Y, Kamei Y, Kondo I, Koshimoto N, Li MCA, Matsubara Y, Miyazaki S, Muraki Y, Nagakane M, Ranc C, Rattenbury NJ, Satoh Y, Shoji H, Suematsu H, Sullivan DJ, Sumi T, Suzuki D, Tristram PJ, Yamakawa T, Yamamwaki T, Yonehara A KMT-2019-BLG-0842Lb: A Cold Planet Below the Uranus/Sun Mass Ratio.This citation is automatically generated and may be unreliable. Use as a guide only.
Keywords
astro-ph.EP; astro-ph.GA; astro-ph.SR; gravitational lensing: microANZSRC Fields of Research
51 - Physical sciences::5101 - Astronomical sciences::510107 - Planetary science (excl. solar system and planetary geology)51 - Physical sciences::5101 - Astronomical sciences::510104 - Galactic astronomy
51 - Physical sciences::5101 - Astronomical sciences::510109 - Stellar astronomy and planetary systems
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