CaltechAUTHORS
Published December 2021 | Version Accepted Version
Journal Article Open

Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging

Creators

  • 1. ROR icon Peking University
  • 2. ROR icon Weizmann Institute of Science
  • 3. ROR icon The Ohio State University
  • 4. ROR icon Max Planck Institute for Astronomy
  • 5. ROR icon University of Warsaw
  • 6. ROR icon University of Tasmania
  • 7. ROR icon Institut d'Astrophysique de Paris
  • 8. ROR icon Sorbonne University
  • 9. ROR icon Jet Propulsion Lab
  • 10. ROR icon NASA Exoplanet Science Institute
  • 11. ROR icon University of Arizona
  • 12. ROR icon Infrared Processing and Analysis Center
  • 13. ROR icon Laboratory of Astrophysics of Bordeaux

Abstract

We constrain the host-star flux of the microlensing planet OGLE-2014-BLG-0676Lb using adaptive optics (AO) images taken by the Magellan and Keck telescopes. We measure the flux of the light blended with the microlensed source to be K = 16.79 ± 0.04 mag and J = 17.76 ± 0.03 mag. Assuming that the blend is the lens star, we find that the host is a 0.73^(+0.14)_(−0.29) M⊙ star at a distance of 2.67^(+0.77)_(−1.41) kpc, where the relatively large uncertainty in angular Einstein radius measurement is the major source of uncertainty. With mass of M_p = 3.68^(+0.69)_(−1.44) M_J, the planet is likely a "super Jupiter" at a projected separation of r_⊥ = 4.53^(+1.49)_(−2.50) AU, and a degenerate model yields a similar M_p = 3.73^(+0.73)_(−1.47) M_J at a closer separation of r_⊥ = 2.56^(+0.84)_(−1.41) AU. Our estimates are consistent with the previous Bayesian analysis based on a Galactic model. OGLE-2014-BLG-0676Lb belongs to a sample of planets discovered in a "second-generation" planetary microlensing survey and we attempt to systematically constrain host properties of this sample with high-resolution imaging to study the distribution of planets.

Additional Information

© 2021 National Astronomical Observatories, CAS and IOP Publishing Ltd. Received 2 June 2021; Accepted 23 September 2021. We acknowledge the support by National Key R&D Program of China (No. 2019YFA0405100), the China Manned Space Project with NO. CMS-CSST-2021-A11 and Project 11573003 supported by the National Natural Science Foundation of China (NSFC). This research uses data obtained through the Telescope Access Program (TAP). This work was supported by a NASA Keck PI Data Award, administered by the NASA Exoplanet Science Institute. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to AU. JPB and JBM acknowledge the financial support of the ANR COLD WORLDS (ANR-18-CE31-0002). KMM's work is supported by the NASA Exoplanets Research Program (XRP) by cooperative agreement NNX16AD44G. JPB is supported by the University of Tasmania through the UTAS Foundation and the endowed Warren Chair in Astronomy.

Attached Files

Accepted Version - 2112.08030.pdf

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2112.08030.pdf

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Additional details

Identifiers

Eprint ID
112822
Resolver ID
CaltechAUTHORS:20220111-720094300

Related works

Describes
https://arxiv.org/abs/2112.08030 (URL)

Funding

National Key Research and Development Program of China
2019YFA0405100
China Manned Space Project
CMS-CSST-2021-A11
National Natural Science Foundation of China
11573003
W. M. Keck Foundation
National Science Centre (Poland)
MAESTRO 2014/14/A/ST9/00121
Agence Nationale pour la Recherche (ANR)
ANR-18-CE31-0002
NASA
NNX16AD44G
University of Tasmania
UTAS Foundation

Dates

Created
2022-01-11
Created from EPrint's datestamp field
Updated
2022-01-11
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Infrared Processing and Analysis Center (IPAC)