2010ApJ...708..625M

Query : 2010ApJ...708..625M

2010ApJ...708..625M - Astrophys. J., 708, 625-634 (2010/January-1)

The mass of the candidate exoplanet companion to HD 136118 from Hubble space telescope astrometry and high-precision radial velocities.

MARTIOLI E., McARTHUR B.E., BENEDICT G.F., BEAN J.L., HARRISON T.E. and ARMSTRONG A.

Abstract (from CDS):

We use Hubble Space Telescope fine guidance sensor astrometry and high-cadence radial velocities for HD 136118 from the Hobby-Eberly Telescope with archival data from Lick to determine the complete set of orbital parameters for HD 136118 b. We find an orbital inclination for the candidate exoplanet of i_b= 163°.1 ±3°.0. This establishes the actual mass of the object, M_b= 42⁺¹¹ _–18M_J, in contrast to the minimum mass determined from the radial velocity data only, M_b sin i ∼ 12 M_J. Therefore, the low-mass companion to HD 136118 is now identified as a likely brown dwarf residing in the "brown dwarf desert."

Abstract Copyright: ∼

Journal keyword(s): astrometry - planetary systems - stars: individual (HD136118) - stars: low-mass, brown dwarfs - techniques: radial velocities

Nomenclature: Tables 4-5: [MMB2010] REF-NN (Nos 14, 16, 17).

CDS comments: HD 131168 b is a misprint for HD 136118 b.

Simbad objects: 6

Full paper

View the references in ADS

Number of rows : 6

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Sp type	#ref 1850 - 2026	#notes
1	HD 33636B	LM*	05 11 46.45	+04 24 12.7			~	49	1
2	HD 38529c	Pl	05 46 34.9131388488	+01 10 05.502949860			~	84	1
3	HD 136118b	Pl	15 18 55.4722661904	-01 35 32.592572196			~	38	1
4	HD 136118	PM*	15 18 55.4722661904	-01 35 32.592572196	7.46	6.94	F7V	141	1
5	HD 168443c	Pl	18 20 03.9332862096	-09 35 44.614653900			~	96	1
6	BD-15 6290b	Pl	22 53 16.7325836486	-14 15 49.304052185			~	266	1

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