2012A&A...541A.149O

Query : 2012A&A...541A.149O

2012A&A...541A.149O - Astronomy and Astrophysics, volume 541A149-149 (2012/5-1)

Transiting exoplanets from the CoRoT space mission. XXII. CoRoT-16b: a hot Jupiter with a hint of eccentricity around a faint solar-like star.

OLLIVIER M., GILLON M., SANTERNE A., WUCHTERL G., HAVEL M., BRUNTT H., BORDE P., PASTERNACKI T., ENDL M., GANDOLFI D., AIGRAIN S., ALMENARA J.M., ALONSO R., AUVERGNE M., BAGLIN A., BARGE P., BONOMO A.S., BOUCHY F., CABRERA J., CARONE L., CARPANO S., CAVARROC C., COCHRAN W.D., CSIZMADIA Sz., DEEG H.J., DELEUIL M., DIAZ R.F., DVORAK R., ERIKSON A., FERRAZ-MELLO S., FRIDLUND M., GAZZANO J.-C., GRZIWA S., GUENTHER E., GUILLOT T., GUTERMAN P., HATZES A., HEBRARD G., LAMMER H., LEGER A., LOVIS C., MacQUEEN P.J., MAYOR M., MAZEH T., MOUTOU C., OFIR A., PAETZOLD M., QUELOZ D., RAUER H., ROUAN D., SAMUEL B., SCHNEIDER J., TADEU DOS SANTOS M., TAL-OR L., TINGLEY B. and WEINGRILL J.

Abstract (from CDS):

We report the discovery of CoRoT-16b, a low density hot jupiter that orbits a faint G5V star (mV=15.63) in 5.3523±0.0002 days with slight eccentricity. A fit of the data with no a priori assumptions on the orbit leads to an eccentricity of 0.33±0.1. We discuss this value and also derive the mass and radius of the planet. We analyse the photometric transit curve of CoRoT-16 given by the CoRoT satellite, and radial velocity data from the HARPS and HIRES spectrometers. A combined analysis using a Markov chain Monte Carlo algorithm is used to get the system parameters. CoRoT-16b is a 0.535 -0.083/+0.085M_J, 1.17 -0.14/+0.16R_J hot Jupiter with a density of 0.44 -0.14/+0.21g/cm3. Despite its short orbital distance (0.0618±0.0015AU) and the age of the parent star (6.73±2.8 Gyr), the planet orbit exhibits significantly non-zero eccentricity. This is very uncommon for this type of objects as tidal effects tend to circularise the orbit. This value is discussed taking into account the characteristics of the star and the observation accuracy.

Abstract Copyright: ∼

Journal keyword(s): stars: fundamental parameters - techniques: photometric - techniques: spectroscopic - techniques: radial velocities - systems planetary

Nomenclature: Table 1 : [OGS2012] NN (Nos 0-10).

Simbad objects: 15

Full paper

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Number of rows : 15

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	CoRoT-12b	Pl	06 43 03.7630314144	-01 17 47.144066352					~	39	1
2	CoRoT-1b	Pl	06 48 19.1723766840	-03 06 07.710745140					~	187	1
3	HD 147506b	Pl	16 20 36.3576063720	+41 02 53.106772488					~	274	1
4	[OGS2012] 8	*	18 34 03.5242966464	-06 00 04.201025004			17.3		~	1	0
5	[OGS2012] 6	*	18 34 03.9800791368	-05 59 53.303401860			13.8		~	1	0
6	[OGS2012] 5	*	18 34 04.0663412976	-06 00 17.272289592			17.7		~	1	0
7	[OGS2012] 4	*	18 34 04.7718174600	-05 59 48.875579988			16.8		~	1	0
8	[OGS2012] 7	*	18 34 04.8429820632	-06 00 39.889669896			13.5		~	1	0
9	[OGS2012] 10	*	18 34 05.6572832736	-05 59 31.575173856			18.5		~	1	0
10	[OGS2012] 1	*	18 34 05.8548478632	-06 00 16.488776124			18.6		~	1	0
11	CoRoT-16b	Pl	18 34 05.9187219720	-06 00 09.244242972					~	28	2
12	CoRoT-16	*	18 34 05.9187219720	-06 00 09.244242972	17.85	16.03	15.51	14.57	G5V	15	2
13	[OGS2012] 3	*	18 34 06.3093260568	-06 00 33.930229644			14.9		~	1	0
14	[OGS2012] 2	*	18 34 06.4103109816	-06 00 00.711623052			17.5		~	1	0
15	[OGS2012] 9	*	18 34 08.1519521832	-06 00 26.674211052			13.2		~	1	0

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