2011A&A...527L..11H

Query : 2011A&A...527L..11H

2011A&A...527L..11H - Astronomy and Astrophysics, volume 527L11-11 (2011/3-1)

The retrograde orbit of the HAT-P-6b exoplanet.

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

Abstract (from CDS):

We observed the transit of the HAT-P-6b exoplanet across its host star with the SOPHIE spectrograph (OHP, France). The resulting stellar radial velocities display the Rossiter-McLaughlin anomaly and reveal a retrograde orbit: the planetary orbital spin and the stellar rotational spin point in approximately opposite directions. A fit to the anomaly measures a sky-projected angle λ=166°±10° between these two spin axes. All seven known retrograde planets are hot Jupiters with masses Mp<3MJup. About two thirds of the planets in this mass range, however, are prograde and aligned (λ≃0°). In contrast, most of the more massive planets (Mp>4MJup) are prograde but misaligned. Different mechanisms may therefore be responsible for planetary obliquities above and below ∼3.5MJup.

Abstract Copyright: ∼

Journal keyword(s): planets and satellites: dynamical evolution and stability - techniques: radial velocities - planetary systems - stars: individual: HAT-P-6

VizieR on-line data: <Available at CDS (J/A+A/527/L11): hat6.dat>

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 WASP-1b Pl 00 20 40.0745768856 +31 59 23.954809596           ~ 134 1
2 WASP-1 V* 00 20 40.0745768856 +31 59 23.954809596   12.06 11.31     F7V 136 1
3 HD 10069 SB* 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 260 1
4 BD+57 793b Pl 04 21 52.7048156328 +57 49 01.889294952           ~ 234 1
5 CoRoT-1b Pl 06 48 19.1723766840 -03 06 07.710745140           ~ 187 1
6 XO-4 Em* 07 21 33.1602434760 +58 16 05.109533364   11.15 10.81     F5 79 1
7 HD 80606 PM* 09 22 37.5768032712 +50 36 13.435326684   9.78 9.00     G8V 366 2
8 WASP-19 * 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 207 2
9 CD-31 10766 * 13 55 42.7120177608 -32 09 34.616222028   11.396 10.910     F7 89 1
10 CD-31 10766b Pl 13 55 42.7120177608 -32 09 34.616222028           ~ 84 1
11 WASP-24 * 15 08 51.7367171808 +02 20 35.962165104   12.00 11.22 11.43   F8-9 71 1
12 BD+36 2593 Em* 15 19 57.9203617176 +36 13 46.738078788   11.83 11.12     F 129 1
13 CD-27 10695b Pl 15 59 50.9491505016 -28 03 42.312819096           ~ 313 1
14 HD 146389 PM* 16 15 50.3653280520 +10 01 57.284258556   9.866 9.39 9.22   F8 70 1
15 HD 147506b Pl 16 20 36.3576063720 +41 02 53.106772488           ~ 274 1
16 BD+38 2917 Em* 17 20 27.8781604680 +38 14 31.908984936   10.41 9.99     F5V 88 1
17 BD+38 2917b Pl 17 20 27.8781604680 +38 14 31.908984936           ~ 95 1
18 BD+47 2846b Pl 19 28 59.3538826128 +47 58 10.217007804           ~ 415 1
19 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 359 1
20 BD+47 2936b Pl 19 50 50.2472976936 +48 04 51.101390496           ~ 493 1
21 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 157 1
22 WASP-2b Pl 20 30 54.1282355304 +06 25 46.341284844           ~ 112 1
23 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 2037 1
24 BD+34 4779 PM* 22 52 09.8636387352 +35 26 49.608422844   10.77 10.36 10.15   F8V 91 1
25 WASP-4 PM* 23 34 15.0857248317 -42 03 41.047972591   13.51 12.48 11.9   G7V 196 1
26 BD+41 4831 * 23 39 05.8102996968 +42 27 57.505293900   10.88 10.47     F8V 98 1
27 BD+41 4831b Pl 23 39 05.8102996968 +42 27 57.505293900           ~ 94 1
28 WASP-5 * 23 57 23.7564672192 -41 16 37.743700800   12.808 12.146 12.058 11.44 G4V 132 1
29 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 139 0
30 CD-35 16019b Pl 23 59 36.0711872328 -35 01 52.923618408           ~ 144 0

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