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  Two Jupiter-mass Planets Discovered by the KMTNet Survey in 2017

Shin, I.-.-G., Ryu, Y.-.-H., Yee, J. C., Gould, A., Albrow, M. D., Chung, S.-.-J., et al. (2019). Two Jupiter-mass Planets Discovered by the KMTNet Survey in 2017. The Astronomical Journal, 157.

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 Creators:
Shin, I. -G.1, Author
Ryu, Y. -H.1, Author
Yee, J. C.1, Author
Gould, A.1, Author
Albrow, M. D.1, Author
Chung, S. -J.1, Author
Han, C.1, Author
Hwang, K. -H.1, Author
Jung, Y. K.1, Author
Shvartzvald, Y.1, Author
Zang, W.1, Author
Lee, C. -U.1, Author
Cha, S. -M.1, Author
Kim, D. -J.1, Author
Kim, H. -W.1, Author
Kim, S. -L.1, Author
Lee, Y.1, Author
Lee, D. -J.1, Author
Park, B. -G.1, Author
Pogge, R. W.1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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Free keywords: planets and satellites: detection gravitational lensing: micro Astrophysics - Earth and Planetary Astrophysics
 Abstract: 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 Korea Microlensing Telescope Network survey observations from the 2017 bulge season. The discovered systems consist of a planet and host star with mass ratios of {5.3}-0.4+0.2 {10}-3 and {2.0}-0.1+0.6 {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}{{p}} ={2.04}-1.15+2.02 {M}{{J}}) orbiting a mid-M dwarf host ({M}{{h}}={0.37}-0.20+0.36 {M}»Ø ) 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}{{p}}={0.71}-0.42+0.80 {M}{{J}}) orbiting a mid-M dwarf host ({M}{{h}}={0.33}-0.20+0.36 {M}»Ø ) at a distance of {6.50}-2.00+1.38 kpc toward the Galactic bulge. Both are potentially gaseous planets that are beyond their hosts‚Äô 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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 Dates: 2019
 Publication Status: Issued
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Title: The Astronomical Journal
Source Genre: Journal
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Pages: - Volume / Issue: 157 Sequence Number: - Start / End Page: - Identifier: -