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.; Han, C.; Hwang, K. -H.; Jung, Y. K.; Shvartzvald, Y.; Zang, W.; Lee, C. -U.; Cha, S. -M.; Kim, D. -J.; Kim, H. -W.; Kim, S. -L.; Lee, Y.; Lee, D. -J.; Park, B. -G.; Pogge, R. W.

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

MPS-Authors

Shin, I. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ryu, Y. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yee, J. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gould, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Albrow, M. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chung, S. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Han, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hwang, K. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jung, Y. K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shvartzvald, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zang, W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, C. -U.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cha, S. -M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, H. -W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, S. -L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Park, B. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pogge, R. W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2019AJ....157..146S
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Citation

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.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D254-F

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.