SIMBAD references

2017MNRAS.464.2708S - Mon. Not. R. Astron. Soc., 464, 2708-2716 (2017/January-3)

K2-99: a subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion.

SMITH A.M.S., GANDOLFI D., BARRAGAN O., BOWLER B., CSIZMADIA S., ENDL M., FRIDLUND M.C.V., GRZIWA S., GUENTHER E., HATZES A.P., NOWAK G., ALBRECHT S., ALONSO R., CABRERA J., COCHRAN W.D., DEEG H.J., CUSANO F., EIGMULLER P., ERIKSON A., HIDALGO D., HIRANO T., JOHNSON M.C., KORTH J., MANN A., NARITA N., NESPRAL D., PALLE E., PATZOLD M., PRIETO-ARRANZ J., RAUER H., RIBAS I., TINGLEY B. and WOLTHOFF V.

Abstract (from CDS):

We report the discovery from K2 of a transiting planet in an 18.25-d, eccentric (0.19 ± 0.04) orbit around K2-99, an 11th magnitude subgiant in Virgo. We confirm the planetary nature of the companion with radial velocities, and determine that the star is a metal-rich ([Fe/H] = 0.20 ± 0.05) subgiant, with mass 1.60^+0.14_–0.10 M_☉ and radius 3.1 ± 0.1 R_☉. The planet has a mass of 0.97 ± 0.09 M_Jup and a radius 1.29 ± 0.05 R_Jup. A measured systemic radial acceleration of -2.12 ± 0.04 ms^–1 d^–1 offers compelling evidence for the existence of a third body in the system, perhaps a brown dwarf orbiting with a period of several hundred days.

Journal keyword(s): planets and satellites: detection - planets and satellites: individual: K2-99 - planetary system - planetary system

Simbad objects: 6

Full paper

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