2004A&A...426L..19S

Query : 2004A&A...426L..19S

2004A&A...426L..19S - Astronomy and Astrophysics, volume 426, L19-23 (2004/10-4)

The HARPS survey for southern extra-solar planets. II. A 14 Earth-masses exoplanet around µ Arae.

SANTOS N.C., BOUCHY F., MAYOR M., PEPE F., QUELOZ D., UDRY S., LOVIS C., BAZOT M., BENZ W., BERTAUX J.-L., LO CURTO G., DELFOSSE X., MORDASINI C., NAEF D., SIVAN J.-P. and VAUCLAIR S.

Abstract (from CDS):

In this letter we present the discovery of a very light planetary companion to the star µ Ara (HD160691). The planet orbits its host once every 9.5 days, and induces a sinusoidal radial velocity signal with a semi-amplitude of 4.1m/s, the smallest Doppler amplitude detected so far. These values imply a mass of m₂sini=14M_⊕ (Earth-masses). This detection represents the discovery of a planet with a mass slightly smaller than that of Uranus, the smallest ``ice giant'' in our Solar System. Whether this planet can be considered an ice giant or a super-earth planet is discussed in the context of the core-accretion and migration models.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: HD 160691 - planetary systems - techniques: radial velocities

CDS comments: The new exoplanet is HD 160691D

Simbad objects: 7

Full paper

View the references in ADS

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 - 2023	#notes
1	* rho01 Cnc	PM*	08 52 35.8111044043	+28 19 50.954994470	7.45	6.82		5.4		K0IV-V	1080	1
2	Ross 905	PM*	11 42 11.0933350978	+26 42 23.650782778		12.06	10.613	10.272	8.24	M3V	606	1
3	HD 330075	PM*	15 49 37.6937569728	-49 57 48.678348924		10.23	9.33			G5	96	1
4	* mu. Ara	PM*	17 44 08.7031414872	-51 50 02.591603160		5.85	5.15			G3IV-V	519	2
5	* mu. Ara b	Pl	17 44 08.7036342277	-51 50 02.591049123						~	88	2
6	* mu. Ara d	Pl	17 44 08.7036342277	-51 50 02.591049123						~	64	2
7	* mu. Ara c	Pl	17 44 08.7036342277	-51 50 02.591049123						~	85	2

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