Aims: In the frame of the search for extrasolar planets and brown dwarfs
around early-type stars, we present the results obtained for the F-type
main-sequence star HD 60532 (F6V) with HARPS.
  Methods: Using 147 spectra obtained with HARPS at La Silla on a time baseline
of two years, we study the radial velocities of this star.
  Results: HD 60532 radial velocities are periodically variable, and the
variations have a Keplerian origin. This star is surrounded by a planetary
system of two planets with minimum masses of 1 and 2.5 Mjup and orbital
separations of 0.76 and 1.58 AU respectively. We also detect high-frequency,
low-amplitude (10 m/s peak-to-peak) pulsations. Dynamical studies of the system
point toward a possible 3:1 mean-motion resonance which should be confirmed
within the next decade.Comment: 7 pages, 11 figures, accepted for publication in A&

A.-M. Lagrange

Chelli

Desort

Duncan

F. Galland

G. Lo Curto

Galland

Gray

H. Beust

Lovis

M. Desort

M. Mayor

Mayor

Nordström

S. Udry

Sato

English

arXiv

International audienceAims. In the framework of the search for extrasolar planets and brown dwarfs around early-type stars, we present the results obtained for the F-type main-sequence star HD 60532 (F6V) with HARPS. Methods: Using 147 spectra obtained with HARPS at La Silla on a time baseline of two years, we studied the radial velocities of this star. Results: HD 60532 radial velocities are periodically variable, and the variations have a Keplerian origin. This star is surrounded by a planetary system of two planets with minimum masses of 1 and 2.5 M_Jup and orbital separations of 0.76 and 1.58 AU, respectively. We also detect high-frequency, small-amplitude (10 m s-1 peak-to-peak) pulsations. Dynamical studies of the system point toward a possible 3:1 mean-motion resonance that should be confirmed within the next decade. Appendix A is only available in electronic form at http://www.aanda.org Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere, Chile, ESO. Program IDs 072.C-0488, 076.C-0279, 077.C-0295, 078.C-0209, 080.C-0664, 080.C-0712, 081.C-0774. Table of radial velocities is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/491/88

Desort, M.

Lagrange, A.-M.

Galland, F.

Beust, H.

Udry, S.

Mayor, M.

Lo Curto, G.

HAL: Hyper Article en Ligne

Extrasolar planets and brown dwarfs around A-F type stars. V. A planetary system found with HARPS around the F6IV-V star HD 60532

7 pages, 11 figures, accepted for publication in A&AAims: In the frame of the search for extrasolar planets and brown dwarfs around early-type stars, we present the results obtained for the F-type main-sequence star HD 60532 (F6V) with HARPS. Methods: Using 147 spectra obtained with HARPS at La Silla on a time baseline of two years, we study the radial velocities of this star. Results: HD 60532 radial velocities are periodically variable, and the variations have a Keplerian origin. This star is surrounded by a planetary system of two planets with minimum masses of 1 and 2.5 Mjup and orbital separations of 0.76 and 1.58 AU respectively. We also detect high-frequency, low-amplitude (10 m/s peak-to-peak) pulsations. Dynamical studies of the system point toward a possible 3:1 mean-motion resonance which should be confirmed within the next decade

Lagrange, A. -M.

Curto, G. Lo

Hal - Université Grenoble Alpes

Extrasolar planets and brown dwarfs around A-F type stars V. A planetary system found with HARPS around the F6IV-V star HD 60532

International audienceThe dynamical analysis in the original paper was erroneous due to a mismatch in the choice of angular parameters. The calculations had been made by assuming a pole-on (sin i = 0) instead of an edge-on sin i = 1 orbit. In this framework, Ω_c-Ωb is just the mutual inclination between the orbital planes of the two planets. We also correct some stellar parameters given in the original paper (log g = +3.83, [Fe/H]updated = -0.26 )

Aims. In the framework of the search for extrasolar planets and brown dwarfs around early-type stars, we present the results obtained for the F-type main-sequence star HD 60532 (F6V) with HARPS.
        Methods. Using 147 spectra obtained with HARPS at La Silla on a time baseline of two years, we studied the radial velocities of this star.
        Results. HD 60532 radial velocities are periodically variable, and the variations have a Keplerian origin. This star is surrounded by a planetary system of two planets with minimum masses of 1 and 2.5 MJup and orbital separations of 0.76 and 1.58 AU, respectively. We also detect high-frequency, small-amplitude (10 m s-1 peak-to-peak) pulsations. Dynamical studies of the system point toward a possible 3:1 mean-motion resonance that should be confirmed within the next decade

EDP Sciences OAI-PMH repository (1.2.0)

Extrasolar planets and brown dwarfs  around A–F type stars

HAL-INSU

The dynamical analysis in the original paper was erroneous due to a
mismatch in the choice of angular parameters. The calculations had been made
by assuming a pole-on (sin i = 0) instead of an edge-on sin i = 1
orbit. In this framework, $\Omega_c-\Omega_b$ is just the mutual
inclination between the orbital planes of the two planets. We also
 correct some stellar parameters given in the original paper (log g = +3.83, [Fe/H]updated = -0.26 )

Extrasolar planets and brown dwarfs around A–F type stars

Crossref

Extrasolar planets and brown dwarfs around A-F type stars V. A planetary
  system found with HARPS around the F6IV-V star HD 60532

Extrasolar planets and brown dwarfs around A-F type stars V. A planetary system found with HARPS around the F6IV-V star HD 60532

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HAL: Hyper Article en Ligne

Hal - Université Grenoble Alpes

Hal - Université Grenoble Alpes

EDP Sciences OAI-PMH repository (1.2.0)

HAL: Hyper Article en Ligne

HAL-INSU

EDP Sciences OAI-PMH repository (1.2.0)

Crossref