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

Shin, I.-G. and Ryu, Y.-H. and Yee, J. C. and Gould, A. and Albrow, M. D. and Chung, S.-J. and Han, C. and Hwang, K.-H. and Jung, Y. K. and Shvartzvald, Y. and Zang, W. and Lee, C.-U. and Cha, S.-M. and Kim, D.-J. and Kim, H.-W. and Kim, S.-L. and Lee, Y. and Lee, D.-J. and Park, B.-G. and Pogge, R. W. (2019) Two Jupiter-mass Planets Discovered by the KMTNet Survey in 2017. Astronomical Journal, 157 (4). Art. No. 146. ISSN 1538-3881. doi:10.3847/1538-3881/ab07c2. https://resolver.caltech.edu/CaltechAUTHORS:20190318-085652699

	PDF - Published Version See Usage Policy. 2MB
	PDF - Accepted Version See Usage Policy. 2MB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20190318-085652699

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 KMTNet survey observations from the 2017 bulge season. The discovered systems consist of a planet and host star with mass ratios, 5.3^(+0.2)_(−0.4)×10^(−3) and 2.0^(+0.6)_(−0.1)×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^(+2.02)_(−1.15)M_J) orbiting a mid-M dwarf host (M_h = 0.37^(+0.36)_(−0.20)M⊙) that is located at 6.01^(+1.27)_(−1.72) kpc toward the Galactic bulge. The other planet, KMT-2017-BLG-1146Lb, is a sub Jupiter-mass planet (M_p = 0.71^(+0.80)_(−0.42)M_J) orbiting a mid-M dwarf host (M_h = 0.33^(+0.36)_(−0.20)M⊙) at a distance toward the Galactic bulge of 6.50^(+1.38)_(−2.00) 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.

Item Type:

Article

Related URLs:

URL	URL Type	Description
https://doi.org/10.3847/1538-3881/ab07c2	DOI	Article
https://iopscience.iop.org/article/10.3847/1538-3881/ab07c2	Publisher	Article
https://arxiv.org/abs/1811.12505	arXiv	Discussion Paper

ORCID:

Author	ORCID
Shin, I.-G.	0000-0002-4355-9838
Ryu, Y.-H.	0000-0001-9823-2907
Yee, J. C.	0000-0001-9481-7123
Albrow, M. D.	0000-0003-3316-4012
Chung, S.-J.	0000-0001-6285-4528
Hwang, K.-H.	0000-0002-9241-4117
Shvartzvald, Y.	0000-0003-1525-5041
Pogge, R. W.	0000-0003-1435-3053

Additional Information:

© 2019 The American Astronomical Society. Received 2018 November 29; revised 2019 February 7; accepted 2019 February 16; published 2019 March 18. This research has made use of the KMTNet system operated by the Korea Astronomy and Space Science Institute (KASI) and the data were obtained at three host sites of CTIO in Chile, SAAO in South Africa, and SSO in Australia. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Work by I.G.S. and A.G. was supported by JPL grant 1500811. A.G. acknowledges the support from NSF grant AST-1516842. A.G. received support from the European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant Agreement No. [321035]. Work by C.H. was supported by the grant (2017R1A4A1015178) of National Research Foundation of Korea.

Group:

Infrared Processing and Analysis Center (IPAC)

Funders:

Funding Agency	Grant Number
JPL	1500811
NSF	AST-1516842
European Research Council (ERC)	321035
National Research Foundation of Korea	2017R1A4A1015178

Subject Keywords:

planets and satellites: detection – gravitational lensing: micro

Issue or Number:

DOI:

10.3847/1538-3881/ab07c2

Record Number:

CaltechAUTHORS:20190318-085652699

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20190318-085652699

Official Citation:

I.-G. Shin et al 2019 AJ 157 146

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

93907

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

18 Mar 2019 16:15

Last Modified:

16 Nov 2021 17:01

Repository Staff Only: item control page