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تسجيل مستخدم جديدTwo Jupiter-Mass Planets Discovered by the KMTNet Survey in 2017
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We report two microlensing events, KMT-2017-BLG-1038 and KMT-2017-BLG-1146 that are caused by planetary systems. These events were discovered by KMTNet survey observations from the $2017$ bulge season. The discovered systems consist of a planet and host star with mass ratios, $5.3_{-0.4}^{+0.2} times 10^{-3}$ and $2.0_{-0.1}^{+0.6} times 10^{-3}$, respectively. Based on a Bayesian analysis assuming a Galactic model without stellar remnant hosts, we find that the planet, KMT-2017-BLG-1038Lb, is a super Jupiter-mass planet ($M_{rm p}= 2.04_{-1.15}^{+2.02},M_{rm J}$) orbiting a mid-M dwarf host ($M_{rm h}= 0.37_{-0.20}^{+0.36}, M_{odot}$) that is located at $6.01_{-1.72}^{+1.27}$ kpc toward the Galactic bulge. The other planet, KMT-2017-BLG-1146Lb, is a sub Jupiter-mass planet ($M_{rm p}= 0.71_{-0.42}^{+0.80},M_{rm J}$) orbiting a mid-M dwarf host ($M_{rm h}= 0.33_{-0.20}^{+0.36},M_{odot}$) at a distance toward the Galactic bulge of $6.50_{-2.00}^{+1.38}$ kpc. Both are potentially gaseous planets that are beyond their hosts snow lines. These typical microlensing planets will be routinely discovered by second-generation microlensing surveys, rapidly increasing the number of detections.
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