SIMBAD references

2018A&A...612A..95B - Astronomy and Astrophysics, volume 612A, 95-95 (2018/4-1)

K2-141 b. A 5-M⊕ super-Earth transiting a K7 V star every 6.7 h.

BARRAGAN O., GANDOLFI D., DAI F., LIVINGSTON J., PERSSON C.M., HIRANO T., NARITA N., CSIZMADIA S., WINN J.N., NESPRAL D., PRIETO-ARRANZ J., SMITH A.M.S., NOWAK G., ALBRECHT S., ANTONICIELLO G., BO JUSTESEN A., CABRERA J., COCHRAN W.D., DEEG H., EIGMULLER P., ENDL M., ERIKSON A., FRIDLUND M., FUKUI A., GRZIWA S., GUENTHER E., HATZES A.P., HIDALGO D., JOHNSON M.C., KORTH J., PALLE E., PATZOLD M., RAUER H., TANAKA Y. and VAN EYLEN V.

Abstract (from CDS):

We report on the discovery of K2-141 b (EPIC 246393474 b), an ultra-short-period super-Earth on a 6.7h orbit transiting an active K7 V star based on data from K2 campaign 12. We confirmed the planet's existence and measured its mass with a series of follow-up observations: seeing-limited MuSCAT imaging, NESSI high-resolution speckle observations, and FIES and HARPS high-precision radial-velocity monitoring. K2-141 b has a mass of 5.31±0.46M⊕ and radius of 1.54–0.09+0.10R⊕, yielding a mean density of 8.00–1.45+1.83g/cm3 and suggesting a rocky-iron composition. Models indicate that iron cannot exceed ∼70% of the total mass. With an orbital period of only 6.7h, K2-141 b is the shortest-period planet known to date with a precisely determined mass.

Abstract Copyright: © ESO 2018

Journal keyword(s): planetary systems - planets and satellites: individual: EPIC 246393474 b - stars: fundamental parameters - stars: individual: EPIC 246393474 - techniques: photometric - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/612/A95): rvharps.dat rvfies.dat lck2.dat>

Simbad objects: 12

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