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A SUPER-JUPITER MICROLENS PLANET CHARACTERIZED BY HIGH-CADENCE KMTNET MICROLENSING SURVEY OBSERVATIONS OF OGLE-2015-BLG-0954
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 Title & Authors
A SUPER-JUPITER MICROLENS PLANET CHARACTERIZED BY HIGH-CADENCE KMTNET MICROLENSING SURVEY OBSERVATIONS OF OGLE-2015-BLG-0954
SHIN, I.-G.; RYU, Y.-H.; UDALSKI, A.; ALBROW, M.; CHA, S.-M.; CHOI, J.-Y.; CHUNG, S.-J.; HAN, C.; HWANG, K.-H.; JUNG, Y.K.; KIM, D.-J.; KIM, S.-L.; LEE, C.-U.; LEE, Y.; PARK, B.-G.; PARK, H.; POGGE, R.W.; YEE, J.C.; PIETRUKOWICZ, P.; MROZ, P.; KOZLOWSKI, S.; POLESKI, R.; SKOWRON, J.; SOSZYNSKI, I.; SZYMANSKI, M.K.; ULACZYK, K.; WYRZYKOWSKI, L.; PAWLAK, M.; GOULD, A.;
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 Abstract
We report the characterization of a massive (mp = 3.9±1.4Mjup) microlensing planet (OGLE-2015-BLG-0954Lb) orbiting an M dwarf host (M = 0.33 ± 0.12M) at a distance toward the Galactic bulge of , which is extremely nearby by microlensing standards. The planet-host projected separation is a⊥ ~ 1.2AU. The characterization was made possible by the wide-field (4 deg2) high cadence (Γ = 6 hr–1) monitoring of the Korea Microlensing Telescope Network (KMTNet), which had two of its three telescopes in commissioning operations at the time of the planetary anomaly. The source crossing time t* = 16 min is among the shortest ever published. The high-cadence, wide-field observations that are the hallmark of KMTNet are the only way to routinely capture such short crossings. High-cadence resolution of short caustic crossings will preferentially lead to mass and distance measurements for the lens. This is because the short crossing time typically implies a nearby lens, which enables the measurement of additional effects (bright lens and/or microlens parallax). When combined with the measured crossing time, these effects can yield planet/host masses and distance.
 Keywords
gravitational microlensing;planets;
 Language
English
 Cited by
 References
1.
Alard, C., & Lupton, R. H. 1998, A Method for Optimal Image Subtraction, ApJ, 503, 325 crossref(new window)

2.
Albrow, M. D., Horne, K., Bramich, D. M., et al., 2009, Difference Imaging Photometry of Blended Gravitational Microlensing Events with a Numerical Kernel, MNRAS, 397, 2099 crossref(new window)

3.
Batista, V., Beaulieu, J.-P., Bennett, D. P., et al. 2015, Confirmation of the OGLE-2005-BLG-169 Planet Signature and Its Characteristics with Lens-Source Proper Motion Detection, ApJ, 808, 170 crossref(new window)

4.
Bennett, D. P., Bond, I. A., Udalski, A., et al., A Low-Mass Planet with a Possible Sub-Stellar-Mass Host in Microlensing Event MOA-2007-BLG-192, ApJ, 684, 663 crossref(new window)

5.
Bennett, D. P., Rhie, S. H., Nikolaev, S., et al. 2010, Masses and Orbital Constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn Analog Planetary System, ApJ, 713, 837 crossref(new window)

6.
Bennett, D. P., Bhattacharya, A., Anderson, J., et al. 2015, Confirmation of the Planetary Microlensing Signal and Star and Planet Mass Determinations for Event OGLE-2005-BLG-169, ApJ, 808, 169 crossref(new window)

7.
Bensby, T., Yee, J. C., Feltzing, S., et al. 2013, Chemical Evolution of the Galactic Bulge as Traced by Microlensed Dwarf and Subgiant Stars. V. Evidence for a Wide Age Distribution and a Complex MDF, A&A, 549, A147 crossref(new window)

8.
Bessell, M. S., & Brett, J. M. 1988, JHKLM Photometry - Standard Systems, Passbands, and Intrinsic Colors, PASP, 100, 1134 crossref(new window)

9.
Bond, I. A., Udalski, A., Jaroszyński, M., et al. 2004, OGLE 2003-BLG-235/MOA 2003-BLG-53: A Planetary Microlensing Event, ApJ, 606, L155 crossref(new window)

10.
Dominik, M. 1999, The Binary Gravitational Lens and Its Extreme Cases, A&A, 349, 108

11.
Gaudi, B. S., Bennett, D. P., Udalski, A., et al. 2008, Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing, Science, 319, 927 crossref(new window)

12.
Gould, A. 1992, Extending the MACHO Search to about 10 exp 6 Solar Masses, ApJ, 392, 442 crossref(new window)

13.
Gould, A., & Loeb, A. 1992, Discovering planetary systems through gravitational microlenses, ApJ, 396, 104 crossref(new window)

14.
Gould, A., Udalski, A., Monard, B., et al. 2013, The Extreme Microlensing Event OGLE-2007-BLG-224: Terrestrial Parallax Observations of a Thick-Disk Brown Dwarf, ApJ, 698, L147 crossref(new window)

15.
Gould, A., Dong, S., Gaudi, B. S., et al. 2010, Frequency of Solar-Like Systems and of Ice and Gas Giants Beyond the Snow Line from High-Magnification Microlensing Events in 2005-2008, ApJ, 720, 1073 crossref(new window)

16.
Griest, K., & Safizadeh, N. 1998, The Use of High-Magnification Microlensing Events in Discovering Extrasolar Planets, ApJ, 500, 37 crossref(new window)

17.
Henderson, C. B., Gaudi, B. S., Han, C., et al. 2014, Optimal Survey Strategies and Predicted Planet Yields for the Korean Microlensing Telescope Network, ApJ, 794, 52 crossref(new window)

18.
Kervella, P., Thévenin, F., Di Folco, E., & Ségransan, D. 2004, The Angular Sizes of Dwarf Stars and Subgiants. Surface Brightness Relations Calibrated by Interferometry, A&A, 426, 297 crossref(new window)

19.
Kim, S.-L., Lee, C.-U., Park, B.-G., et al. 2016, KMTNet: A Network of 1.6 m Wide-Field Optical Telescopes Installed at Three Southern Observatories, JKAS, 49, 37

20.
Nataf, D. M., Gould, A., Fouqué, P., et al. 2013, Reddening and Extinction toward the Galactic Bulge from OGLE-III: The Inner Milky Way's RV ∼ 2:5 Extinction Curve, ApJ, 769, 88 crossref(new window)

21.
Raghavan, D., McAlister, H. A., Henry, T. J., et al. 2010, A Survey of Stellar Families: Multiplicity of Solar-Type Stars, ApJS, 190, 1 crossref(new window)

22.
Schechter, P. L., Mateo, M., & Saha, A. 1993, DOPHOT, a CCD Photometry Program: Description and Tests, PASP, 105, 1342 crossref(new window)

23.
Shvartzvald, Y., & Maoz, D. 2012, Second-Generation Microlensing Planet Surveys: a Realistic Simulation, MNRAS, 419, 3631 crossref(new window)

24.
Shvartzvald, Y., Udalski, A., Gould, A., et al. 2015, Spitzer Microlens Measurement of a Massive Remnant in a Well-Separated Binary, ApJ, 814, 111 crossref(new window)

25.
Shvartzvald, Y., Maoz, D., Udalski, A., et al. 2016, The Frequency of Snowline-Region Planets from Four Years of OGLE-MOA-Wise Second-Generation Microlensing, MNRAS, 457, 4089 crossref(new window)

26.
Skowron, J., Udalski, A., Szymański, M. K., et al. 2013, New Method to Measure Proper Motions of Microlensed Sources: Application to Candidate Free-floating-planet Event MOA-2011-BLG-262, ApJ, 785, 156 crossref(new window)

27.
Szymański, M. K., Udalski, A., Soszyński, I., et al. 2011, The Optical Gravitational Lensing Experiment. OGLE-III Photometric Maps of the Galactic Bulge Fields, Acta Astron., 61, 83

28.
Udalski, A. 2003, The Optical Gravitational Lensing Experiment. Real Time Data Analysis Systems in the OGLE-III Survey, Acta Astron., 53, 291

29.
Udalski, A., Szymański, M., Kaluzny, J., et al. 1994, The Optical Gravitational Lensing Experiment. The Early Warning System: Real Time Microlensing, Acta Astron., 44, 227

30.
Yee, J. C., Udalski, A., Sumi, T., et al. 2009, Extreme Magnification Microlensing Event OGLE-2008-BLG-279: Strong Limits on Planetary Companions to the Lens Star, ApJ, 703, 2082 crossref(new window)

31.
Yee, J. C., Svartzvald, Y., Gal-Yam, A., et al. 2012, MOA-2011-BLG-293Lb: A Testbed for Pure Survey Microlensing Planet Detections, ApJ, 755, 102 crossref(new window)

32.
Yoo, J., DePoy, D. L., Gal-Yam, A., et al. 2004, OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens, ApJ, 603, 139 crossref(new window)

33.
Zhu, W., Penny, M., Mao, S., Gould, A., & Gendron, R. 2014, Predictions for Microlensing Planetary Events from Core Accretion Theory, ApJ, 788, 73 crossref(new window)

34.
Zhu, W., Calchi Novati, S., Gould, A., et al. 2016, Mass Measurements of Isolated Objects from Space-Based Microlensing, ApJ, in press, arXiv:1510.02097