Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2009-05-07
Astrophys.J.699:L48-L51,2009
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
accepted to ApJ Letters, 11 pages, 2 figures (see Dittmann et al. 2009 ApJ 699 L48-L51)
Scientific paper
10.1088/0004-637X/699/1/L48
We have confirmed the existence of the transiting super Neptune extrasolar planet HAT-P-11b. On May 1, 2009 UT the transit of HAT-P-11b was detected at the University of Arizona's 1.55m Kuiper Telescope with 1.7 millimag rms accuracy. We find a central transit time of T_c = 2454952.92534+/-0.00060 BJD; this transit occurred 80+/-73 seconds sooner than previous measurements (71 orbits in the past) would have predicted. Hence, our transit timing rules out the presence of any large (>200 s) deviations from the ephemeris of Bakos et al. (2009). We obtain a slightly more accurate period of P=4.8878045+/-0.0000043 days. We measure a slightly larger planetary radius of R_p=0.452+/-0.020 R_J (5.07+/-0.22 R_earth) compared to Bakos and co-workers' value of 0.422+/-0.014 R_J (4.73+/-0.16 R_earth). Our values confirm that HAT-P-11b is very similar to GJ 436b (the only other known transiting super Neptune) in radius and other bulk properties.
Close Laird M.
Dittmann Jason A.
Green Elizabeth M.
Males Jared R.
Scuderi Louis J.
No associations
LandOfFree
Follow-up Observations of the Neptune Mass Transiting Extrasolar Planet 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 Follow-up Observations of the Neptune Mass Transiting Extrasolar Planet HAT-P-11b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Follow-up Observations of the Neptune Mass Transiting Extrasolar Planet HAT-P-11b will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-456222