2011A&A...533A.113M

Query : 2011A&A...533A.113M

2011A&A...533A.113M - Astronomy and Astrophysics, volume 533A, 113-113 (2011/9-1)

Spin-orbit inclinations of the exoplanetary systems HAT-P-8b, HAT-P-9b, HAT-P-16b, and HAT-P-23b.

MOUTOU C., DIAZ R.F., UDRY S., HEBRARD G., BOUCHY F., SANTERNE A., EHRENREICH D., ARNOLD L., BOISSE I., BONFILS X., DELFOSSE X., EGGENBERGER A., FORVEILLE T., LAGRANGE A.-M., LOVIS C., MARTINEZ P., PEPE F., PERRIER C., QUELOZ D., SANTOS N.C., SEGRANSAN D., TOUBLANC D., TRONCIN J.P., VANHUYSSE M. and VIDAL-MADJAR A.

Abstract (from CDS):

We report the measurement of the spin-orbit angle of the extra-solar planets HAT-P-8b, HAT-P-9b, HAT-P-16b, and HAT-P-23b, based on spectroscopic observations performed at the Observatoire de Haute-Provence with the SOPHIE spectrograph on the 1.93-m telescope. Radial velocity measurements of the Rossiter-McLaughlin effect show the detection of an apparent prograde, aligned orbit for all systems. The projected spin-orbit angles are found to be λ=-17°+9.2–11.5, -16°±8°, -10°±16°, and+15° ±22 ° for, HAT-P-8, HAT-P-9, HAT-P-16, and HAT-P-23, respectively, with corresponding projected rotational velocities of 14.5±0.8, 12.5±1.8, 3.9±0.8, and 7.8±1.6km/s. These new results increase to 37 the number of accurately measured spin-orbit angles in transiting extrasolar systems. We conclude by drawing a tentative picture of the global behaviour of orbital alignement, involving the complexity and diversity of possible mechanisms.

Abstract Copyright: ∼

Journal keyword(s): techniques: radial velocities - planet-star interactions - planetary systems

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HAT-P-16 * 00 38 17.5584024024 +42 27 47.216738232   11.38 10.91     F8 65 1
2 HAT-P-16b Pl 00 38 17.5584024024 +42 27 47.216738232           ~ 60 1
3 CoRoT-1b Pl 06 48 19.1723766840 -03 06 07.710745140           ~ 181 1
4 HAT-P-9b Pl 07 20 40.4564614032 +37 08 26.342829060           ~ 69 1
5 HAT-P-9 * 07 20 40.4564614032 +37 08 26.342829060   12.35 12.34 12.08   F 55 1
6 Kepler-8 Ro* 18 45 09.1489991376 +42 27 03.891327156           F6V 107 1
7 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 300 2
8 HAT-P-23b Pl 20 24 29.7234392904 +16 45 43.811510112           ~ 71 1
9 HAT-P-23 * 20 24 29.7234392904 +16 45 43.811510112   13.05 11.94 12.27   G0 67 1
10 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 139 1
11 BD+34 4779 PM* 22 52 09.8636387352 +35 26 49.608422844   10.77 10.36 10.15   F8V 82 1
12 BD+34 4779b Pl 22 52 09.8636387352 +35 26 49.608422844           ~ 81 1
13 BD+41 4831 * 23 39 05.8102996968 +42 27 57.505293900   10.88 10.47     F8V 86 1
14 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 111 0

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