SIMBAD references

2013A&A...556A.110B - Astronomy and Astrophysics, volume 556A, 110-110 (2013/8-1)

The HARPS search for southern extra-solar planets. XXXIV. A planetary system around the nearby M dwarf GJ 163, with a super-earth possibly in the habitable zone.

BONFILS X., LO CURTO G., CORREIA A.C.M., LASKAR J., UDRY S., DELFOSSE X., FORVEILLE T., ASTUDILLO-DEFRU N., BENZ W., BOUCHY F., GILLON M., HEBRARD G., LOVIS C., MAYOR M., MOUTOU C., NAEF D., NEVES V., PEPE F., PERRIER C., QUELOZ D., SANTOS N.C. and SEGRANSAN D.

Abstract (from CDS):

The meter-per-second precision achieved by today's velocimeters enables us to search for 1-10M planets in the habitable zone of cool stars. This paper reports on the detection of three planets orbiting GJ 163 (HIP 19394), a M3 dwarf monitored by our ESO/HARPS search for planets. We made use of the HARPS spectrograph to collect 150 radial velocities of GJ 163 over a period of eight years. We searched the radial-velocity time series for coherent signals and found five distinct periodic variabilities. We investigated the stellar activity and called into question the planetary interpretation for two signals. Before more data can be acquired we concluded that at least three planets are orbiting GJ163. They have orbital periods of Pb=8.632±0.002, Pc=25.63±0.03, and Pd=604±8-days and minimum masses msini=10.6±0.6, 6.8±0.9, and 29±3M, respectively. We hold our interpretations for the two additional signals with periods P(e)=19.4 and P(f)=108-days. The inner pair presents an orbital period ratio of 2.97, but a dynamical analysis of the system shows that it lays outside the 3:1 mean motion resonance. The planet GJ163c, in particular, is a super-Earth with an equilibrium temperature of Teq=(302±10)(1-A)1/4K and may lie in the so-called habitable zone for albedo values (A=0.34-0.89) moderately higher than that of Earth (A=0.2-0.3).

Abstract Copyright:

Journal keyword(s): techniques: radial velocities - stars: late-type - planetary systems - stars: individual: GJ 163

VizieR on-line data: <Available at CDS (J/A+A/556/A110): table6.dat>

Simbad objects: 10

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2021.07.25-03:58:34

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