Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2010-09-28
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
6 pages, 2 figures, submitted to PASJ
Scientific paper
We report the detection of the Rossiter-McLaughlin effect for the eccentric, super-Neptune exoplanet HAT-P-11b, based on radial velocity measurements taken with HDS mounted on the Subaru 8.2m telescope, and simultaneous photometry with the FTN 2.0m telescope, both located in Hawai'i. The observed radial velocities during a planetary transit of HAT-P-11b show a persistent blue-shift, suggesting a spin-orbit misalignment in the system. The best-fit value for the projected spin-orbit misalignment angle is $\lambda= 103_{-19}^{+23}$ deg. Our result supports the notion that eccentric exoplanetary systems are likely to have significant spin-orbit misalignment (e.g., HD 80606, WASP-8, WASP-14, WASP-17, and XO-3). This fact suggests that not only hot-Jupiters but also super-Neptunes like HAT-P-11b had once experienced dynamical processes such as planet-planet scattering or the Kozai migration.
Aoki Wako
Hirano Teruyuki
Narita Norio
Sato Bun'ei
Shporer Avi
No associations
LandOfFree
A Possible Tilted Orbit of the Super-Neptune HAT-P-11b does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Possible Tilted Orbit of the Super-Neptune HAT-P-11b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Possible Tilted Orbit of the Super-Neptune HAT-P-11b will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-521204