OGLE-2016-BLG-1093Lb: A Sub-Jupiter-mass Spitzer Planet Located in Galactic Bulge

Abstract

OGLE-2016-BLG-1093 is a planetary microlensing event that is part of the statistical $Spitzer$ microlens parallax sample. The precise measurement of the microlens parallax effect for this event, combined with the measurement of finite source effects, leads to a direct measurement of the lens masses and system distance: $M_{\mathrm{host}}=0.38$--$0.57M_{\odot }$, $m_p=0.59$--$0.87M_{\mathrm{Jup}}$, and the system is located at the Galactic bulge ($D_L\sim 8.1$ kpc). Because this was a high-magnification event, we are also able to empirically show that the "cheap-space parallax" concept Gould & Yee (2012) produces well-constrained (and consistent) results for $|{\pi }_{\mathrm{E}}|$. This demonstrates that this concept can be extended to many two-body lenses. Finally, we briefly explore systematics in the $Spitzer$ light curve in this event and show that their potential impact is strongly mitigated by the color-constraint.

arXiv comment9 Figures, 3 Tables, submitted to the AAS journal

References in corpus (42)

• Galactic Stellar and Substellar Initial Mass Function
• Reddening and Extinction Toward the Galactic Bulge from OGLE-III: The Inner Milky Way's Rv ~ 2.5 Extinction Curve
• Real-Time Difference Imaging Analysis of MOA Galactic Bulge Observations During 2000
• Planet formation around stars of various masses: The snow line and the frequency of giant planets
• The angular size of dwarf stars and subgiants - Surface brightness relations calibrated by interferometry
• OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens
• The Galactic Habitable Zone and the Age Distribution of Complex Life in the Milky Way
• Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
• The Galactic Habitable Zone I. Galactic Chemical Evolution
• MOA-2011-BLG-293Lb: A test of pure survey microlensing planet detections
• Microlensing optical depth towards the Galactic bulge from MOA observations during 2000 with Difference Image Analysis
• Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. IV. Two bulge populations
• OGLE-2005-BLG-071Lb, the Most Massive M-Dwarf Planetary Companion?
• MOA-2009-BLG-387Lb: A massive planet orbiting an M dwarf
• Planetary Detection Efficiency of the Magnification 3000 Microlensing Event OGLE-2004-BLG-343
• Pathway to the Galactic Distribution of Planets: Combined Spitzer and Ground-Based Microlens Parallax Measurements of 21 Single-Lens Events
• Difference Image Analysis: Extension to a Spatially Varying Photometric Scale Factor and Other Considerations
• Criteria for Sample Selection to Maximize Planet Sensitivity and Yield from Space-Based Microlens Parallax Surveys
• MOA-2011-BLG-293Lb: First Microlensing Planet possibly in the Habitable Zone
• Toward a Galactic Distribution of Planets. I. Methodology & Planet Sensitivities of the 2015 High-Cadence Spitzer Microlens Sample
• A Model of Habitability Within the Milky Way Galaxy
• Analyze This! A Cosmological Constraint Package for CMBEASY
• Systematic KMTNet Planetary Anomaly Search, Paper I: OGLE-2019-BLG-1053Lb, A Buried Terrestrial Planet
• Is the Galactic bulge devoid of planets?
• Gas Giants in Hot Water: Inhibiting Giant Planet Formation and Planet Habitability in Dense Star Clusters Through Cosmic Time
• Systematic KMTNet Planetary Anomaly Search, Paper II: Six New $q<2\times 10^{-4}$ Mass-ratio Planets
• Revisiting MOA 2013 BLG-220L: A Solar-type star with a Cold super-Jupiter Companion
• MOA-2007-BLG-400 A Super-Jupiter Mass Planet Orbiting a Galactic BulgeK-dwarf Revealed by Keck Adaptive Optics Imaging
• Spitzer Microlensing Program as a Probe for Globular Cluster Planets. Analysis of OGLE-2015-BLG-0448
• Cheap Space-Based Microlens Parallaxes for High-Magnification Events
• MOA-2013-BLG-220Lb: Massive Planetary Companion to Galactic-Disk Host
• No Large Dependence of Planet Frequency on Galactocentric Distance
• Bayesian Approach for Determining Microlens System Properties with High-Angular-Resolution Follow-up Imaging
• OGLE-2017-BLG-0406: $Spitzer$ Microlens Parallax Reveals Saturn-mass Planet orbiting M-dwarf Host in the Inner Galactic Disk
• OGLE-2016-BLG-0168 Binary Microlensing Event: Prediction and Confirmation of the Micorlens Parallax Effect from Space-based Observation
• The 2L1S/1L2S Degeneracy for Two Microlensing Planet Candidates Discovered by the KMTNet Survey in 2017
• Spitzer Opens New Path to Break Classic Degeneracy for Jupiter-Mass Microlensing Planet OGLE-2017-BLG-1140Lb
• OGLE-2016-BLG-1045: A Test of Cheap Space-Based Microlens Parallaxes
• KMT-2019-BLG-0842Lb: A Cold Planet Below the Uranus/Sun Mass Ratio
• Evidence of Systematic Errors in $Spitzer$ Microlens Parallax Measurements
• Pixel Level Decorrelation in Service of the \textit{Spitzer} Microlens Parallax Survey
• Using Source Proper Motion to Validate Terrestrial Parallax: OGLE-2019-BLG-1058

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• Four sub-Jovian-mass planets detected by high-cadence microlensing surveys
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