TESS spots a compact system of super-Earths around the naked-eye star HR 858
Name
Vanderburg_2019_ApJL_881_L19.pdf
Description
Published version
Size
2.01 MB
Format
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Checksum (MD5)
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Author(s)
Vanderburg, Andrew
Huang, Chelsea
Ricker, George R.
Vanderspek, Roland K.
Seager, Sara
Burke, Christopher J.
Burt, Jennifer A.
Crossfield, Ian
Dynes, Scott
Guerrero, Natalia
Date Issued
August 2019
Journal
Astrophysical journal. Letters
Publisher
American Astronomical Society
Citation
Vanderburg, Andrew, et al. "TESS spots a compact system of super-Earths around the naked-eye star HR 858." Astrophysical journal. Letters 881, 1 (August 2019): letter 19 doi 10.3847/2041-8213/AB322D ©2019 Author(s)
Version
Final published version
Abstract
Transiting Exoplanet Survey Satellite (TESS) observations have revealed a compact multiplanet system around the sixth-magnitude star HR 858 (TIC 178155732, TOI 396), located 32 pc away. Three planets, each about twice the size of Earth, transit this slightly evolved, late F-type star, which is also a member of a visual binary. Two of the planets may be in mean motion resonance. We analyze the TESS observations, using novel methods to model and remove instrumental systematic errors, and combine these data with follow-up observations taken from a suite of ground-based telescopes to characterize the planetary system. The HR 858 planets are enticing targets for precise radial velocity observations, secondary eclipse spectroscopy, and measurements of the Rossiter-McLaughlin effect. ©2019
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.3847/2041-8213/AB322D
