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- W4200127160 abstract "We validate the planetary nature of an ultra-short period planet orbiting the M dwarf KOI-4777. We use a combination of space-based photometry from Kepler, high-precision, near-infrared Doppler spectroscopy from the Habitable-zone Planet Finder, and adaptive optics imaging to characterize this system. KOI-4777.01 is a Mars-sized exoplanet ($mathrm{R}_{p}=0.51 pm 0.03R_{oplus}$) orbiting the host star every 0.412-days ($sim9.9$-hours). This is the smallest validated ultra-short period planet known and we see no evidence for additional massive companions using our HPF RVs. We constrain the upper $3sigma$ mass to $M_{p}<0.34~mathrm{M_oplus}$ by assuming the planet is less dense than iron. Obtaining a mass measurement for KOI-4777.01 is beyond current instrumental capabilities." @default.
- W4200127160 created "2021-12-31" @default.
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- W4200127160 date "2021-12-09" @default.
- W4200127160 modified "2023-10-16" @default.
- W4200127160 title "A Hot Mars-sized Exoplanet Transiting an M Dwarf" @default.
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