SIMBAD references

2006A&A...447.1159E - Astronomy and Astrophysics, volume 4471159-1163 (2006/3-1)

The CORALIE survey for southern extrasolar planets. XIV. HD 142022 b: a long-period planetary companion in a wide binary.

EGGENBERGER A., MAYOR M., NAEF D., PEPE F., QUELOZ D., SANTOS N.C., UDRY S. and LOVIS C.

Abstract (from CDS):

We report precise Doppler measurements of HD 142022 obtained during the past six years with the CORALIE echelle spectrograph at La Silla Observatory together with a few additional observations made recently with the HARPS echelle spectrograph. Our radial velocities reveal evidence of a planetary companion with an orbital period P=1928+53–39 days, an eccentricity e=0.53+0.23–0.18, and a velocity semiamplitude K=92+102–29m/s. The inferred companion minimum mass is M2sini=5.1+2.6–1.5MJup and the semimajor axis a=3.03±0.05AU. Only one full orbital revolution has been monitored yet, and the periastron passage could not be observed since the star was too low on the horizon. The eccentricity and velocity semiamplitude remain therefore quite uncertain and the orbital solution is preliminary. HD 142022 is a chromospherically inactive K0 dwarf, metal rich relative to the Sun, and is the primary component of a wide binary. HD 142022b is thus a new ``planet in binary'' candidate, and its high eccentricity might be due to secular interactions with the distant stellar companion.

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Journal keyword(s): techniques: radial velocities - stars: individual: HD 142022 - stars: binaries: visual - stars: planetary systems

VizieR on-line data: <Available at CDS (J/A+A/447/1159): table3.dat>

Simbad objects: 6

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