2005A&A...440..751C


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET10:11:41

2005A&A...440..751C - Astronomy and Astrophysics, volume 440, 751-758 (2005/9-3)

The CORALIE survey for southern extra-solar planets. XIII. A pair of planets around HD 202206 or a circumbinary planet?

CORREIA A.C.M., UDRY S., MAYOR M., LASKAR J., NAEF D., PEPE F., QUELOZ D. and SANTOS N.C.

Abstract (from CDS):

Long-term precise Doppler measurements with the CORALIE spectrograph reveal the presence of a second planet orbiting the solar-type star HD202206. The radial-velocity combined fit yields companion masses of m2sini=17.4MJup and 2.44MJup, semi-major axes of a=0.83AU and 2.55AU, and eccentricities of e=0.43 and 0.27, respectively. A dynamical analysis of the system further shows a 5/1 mean motion resonance between the two planets. This system is of particular interest since the inner planet is within the brown-dwarf limits while the outer one is much less massive. Therefore, either the inner planet formed simultaneously in the protoplanetary disk as a superplanet, or the outer Jupiter-like planet formed in a circumbinary disk. We believe this singular planetary system will provide important constraints on planetary formation and migration scenarios.

Abstract Copyright:

Journal keyword(s): techniques: radial velocities - techniques: spectroscopic - stars: individual: HD 202206 - stars: binaries: general - stars: planetary systems

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 12661 PM* 02 04 34.2883519451 +25 24 51.514208219   8.16   7.0   K0V 232 1
2 HD 110833 SB* 12 44 14.5447567445 +51 45 33.372388151   7.98   6.4   K3 143 0
3 HD 169830 * 18 27 49.4852008378 -29 49 00.705771732   6.406 5.902 7.01   F7V 242 1
4 HD 202206c Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 36 1
5 HD 202206b Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 52 1
6 HD 202206 PM* 21 14 57.7684954746 -20 47 21.162361638   8.79 8.07     G6V 192 1
7 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 845 1

    Equat.    Gal    SGal    Ecl

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2020.02.17-10:11:41

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