KMT-2022-BLG-2397: Brown Dwarf at the Upper Shore of the Einstein Desert

We measure the Einstein radius of the single-lens microlensing event KMT-2022-BLG-2397 to be θ E = 24.8 ± 3.6 μ as, placing it at the upper shore of the Einstein Desert, 9 ≲ θ E / μ as ≲ 25, between free-floating planets (FFPs) and bulge brown dwarfs (BDs). In contrast to the six BD (25 ≲ θ E ≲ 50)...

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Veröffentlicht in:	The Astronomical journal 2023-09, Vol.166 (3), p.100
Hauptverfasser:	Gould, Andrew, Ryu, Yoon-Hyun, Yee, Jennifer C., Albrow, Michael D., Chung, Sun-Ju, Han, Cheongho, Hwang, Kyu-Ha, Jung, Youn Kil, Shin, In-Gu, Shvartzvald, Yossi, Yang, Hongjing, Zang, Weicheng, Cha, Sang-Mok, Kim, Dong-Jin, Kim, Seung-Lee, Lee, Chung-Uk, Lee, Dong-Joo, Lee, Yongseok, Park, Byeong-Gon, Pogge, Richard W.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Brown dwarf stars Brown dwarfs Deserts Extrasolar planets Free floating planets Gravitational microlensing Gravitational microlensing exoplanet detection Lenses Main sequence stars Microlenses Rogue planets Stars
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