2014A&A...572A..49N

Query : 2014A&A...572A..49N

2014A&A...572A..49N - Astronomy and Astrophysics, volume 572A, 49-49 (2014/12-1)

WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system.

NEVEU-VANMALLE M., QUELOZ D., ANDERSON D.R., CHARBONNEL C., COLLIER CAMERON A., DELREZ L., GILLON M., HELLIER C., JEHIN E., LENDL M., MAXTED P.F.L., PEPE F., POLLACCO D., SEGRANSAN D., SMALLEY B., SMITH A.M.S., SOUTHWORTH J., TRIAUD A.H.M.J., UDRY S. and WEST R.G.

Abstract (from CDS):

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. WASP-94A is an F8 type star hosting a transiting planet with a radius of 1.72±0.06R_Jup, a mass of 0.452±0.034M_Jup, and an orbital period of 3.95-days. The Rossiter-McLaughlin effect is clearly detected, and the measured projected spin-orbit angle indicates that the planet occupies a retrograde orbit. WASP-94B is an F9 stellar companion at an angular separation of 15'' (projected separation 2700au), hosting a gas giant with a minimum mass of 0.618±0.028M_Jup with a period of 2.008-days, detected by Doppler measurements. The orbital planes of the two planets are inclined relative to each other, indicating that at least one of them is inclined relative to the plane of the stellar binary. These hot Jupiters in a binary system bring new insights into the formation of close-in giant planets and the role of stellar multiplicity.

Abstract Copyright: ∼

Journal keyword(s): planetary systems - stars: individual: WASP-94 - techniques: photometric - techniques: radial velocities - techniques: spectroscopic - binaries: visual

VizieR on-line data: <Available at CDS (J/A+A/572/A49): w94a_rv.dat w94b_rv.dat w94a_phr.dat w94a_phz.dat w94a_piz.dat>

Simbad objects: 13

Full paper

View the references in ADS

Number of rows : 13

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	BD-07 436	EB*	02 28 37.226	-07 03 38.39	10.87	10.12	10.23		~	33	0
2	HD 20781	PM*	03 20 02.9428582501	-28 47 01.790465531	9.263	8.44	8.17	8.43	G9.5V	113	1
3	HD 20782	PM*	03 20 03.5777546706	-28 51 14.660358176	8.03	7.38			G1.5V	203	1
4	NAME Gal Anticenter	reg	05 46	+28.9					~	878	0
5	WASP-64	EB*	06 44 27.6050701128	-32 51 30.179289384					~	31	1
6	BD+50 1471	PM*	07 48 06.4723053776	+50 13 32.920598923	12.002	11.138	10.669	10.243	G9V	166	1
7	BD+50 1471B	PM*	07 48 07.4814105508	+50 13 03.255439301	11.927	11.086	10.631	10.216	G9V	52	0
8	BD+07 2474	EB*	11 43 38.016288	+06 33 49.41900	11.15	10.41	10.34		G0	32	0
9	Kepler-132	Er*	18 52 56.5641599064	+41 20 34.997513460	12.49	11.92	11.768		~	84	0
10	CD-34 14724A	EB*	20 55 07.9443524136	-34 08 08.007489384	10.74	10.05	10.17	9.774	F8	63	0
11	NAME CD-34 14724Ab	Pl	20 55 07.9445087070	-34 08 08.007683146					~	36	0
12	CD-34 14724B	PM*	20 55 09.1576722384	-34 08 07.913816448			10.51	10.06	F9	25	0
13	NAME CD-34 14724Bb	Pl	20 55 09.1578915938	-34 08 07.915242113					~	8	0

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