Corpus ID: 208527192

Spitzer + VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event

  title={Spitzer + VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event},
  author={Weicheng Zang and Subo Dong and Andrew Gould and Sebastiano Calchi Novati and Ping Chen and Hongjing Yang and Shanghuo Li and Shude Mao and Kevin B. Alton and Sean J. Carey and Grant Christie and Franccoise Delplancke-Strobele and Dax L. Feliz and J. Green and Shaoming Hu and Tharindu Jayasinghe and Robert A. Koff and Alexander Kurtenkov and Antoine M'erand and Milen Minev and Robert Lucien Mutel and Tim Natusch and Tyler Roth and Yossi Shvartzvald and Fengwu Sun and Tonny Vanmunster and Wei Zhu},
  journal={arXiv: Instrumentation and Methods for Astrophysics},
  • Weicheng Zang, Subo Dong, +24 authors Wei Zhu
  • Published 2019
  • Physics
  • arXiv: Instrumentation and Methods for Astrophysics
  • We report the lens mass and distance measurements of the nearby microlensing event TCP J05074264+2447555. We measure the microlens parallax vector ${\pi}_{\rm E}$ using Spitzer and ground-based light curves with constraints on the direction of lens-source relative proper motion derived from Very Large Telescope Interferometer (VLTI) GRAVITY observations. Combining this ${\pi}_{\rm E}$ determination with the angular Einstein radius $\theta_{\rm E}$ measured by VLTI GRAVITY observations, we find… CONTINUE READING

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