2009A&A...496..521C


Query : 2009A&A...496..521C

2009A&A...496..521C - Astronomy and Astrophysics, volume 496, 521-526 (2009/3-3)

The HARPS search for southern extra-solar planets. XVI. HD45364, a pair of planets in a 3:2 mean motion resonance.

CORREIA A.C.M., UDRY S., MAYOR M., BENZ W., BERTAUX J.-L., BOUCHY F., LASKAR J., LOVIS C., MORDASINI C., PEPE F. and QUELOZ D.

Abstract (from CDS):

Precise radial-velocity measurements with the HARPS spectrograph reveal the presence of two planets orbiting the solar-type star HD45364. The companion masses are Msini=0.187MJup and 0.658MJup, with semi-major axes of a=0.681AU and 0.897 AU, and eccentricities of e=0.168 and 0.097, respectively. A dynamical analysis of the system further shows a 3:2 mean motion resonance between the two planets, which prevents close encounters and ensures the stability of the system over 5Gyr. This is the first time that such a resonant configuration has been observed for extra-solar planets, although there is an analogue in our Solar System formed by Neptune and Pluto. This singular planetary system may provide important constraints on planetary formation and migration scenarios.

Abstract Copyright:

Journal keyword(s): stars: individual: HD45364 - stars: planetary systems - techniques: radial velocities - methods: observational

VizieR on-line data: <Available at CDS (J/A+A/496/521): hd45364.dat>

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 45364 PM* 06 25 38.4743561928 -31 28 51.430718388   8.82 8.06     G8V 113 1
2 HD 45364c Pl 06 25 38.4744251424 -31 28 51.428476346           ~ 23 1
3 HD 45364b Pl 06 25 38.4744251424 -31 28 51.428476346           ~ 21 1
4 HD 73526 PM* 08 37 16.4833548528 -41 19 08.790456324   9.69 9.00     G6V 177 2
5 * rho01 Cnc PM* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1038 1
6 HD 82943 PM* 09 34 50.7353072232 -12 07 46.369202196   7.17 6.53     F9VFe+0.5 435 2
7 HD 128311 BY* 14 36 00.5602765558 +09 44 47.454573266 9.232 8.441 7.446 6.895 6.425 K3V 289 1
8 HD 202206 PM* 21 14 57.7686051936 -20 47 21.161521320   8.79 8.07     G6V 211 1
9 BD-15 6290 BY* 22 53 16.7325836486 -14 15 49.304052185 12.928 11.749 10.192 9.013 7.462 M3.5V 930 1

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2022.08.16-05:24:01

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