2012A&A...541A..56M


Query : 2012A&A...541A..56M

2012A&A...541A..56M - Astronomy and Astrophysics, volume 541A, 56-56 (2012/5-1)

Kepler KOI-13.01 - detection of beaming and ellipsoidal modulations pointing to a massive hot Jupiter.

MAZEH T., NACHMANI G., SOKOL G., FAIGLER S. and ZUCKER S.

Abstract (from CDS):

KOI-13 was presented by the Kepler team as a candidate for having a giant planet - KOI-13.01, with an orbital period of 1.7d and a transit depth of ∼0.8%. We have analyzed the Kepler Q2 data of KOI-13, which was publicly available at the time of the submission of this paper, and derived the amplitudes of the beaming, ellipsoidal and reflection modulations - 8.6±1.1, 66.8±1.6 and 72.0±1.5 ppm (parts per million), respectively. After the paper was submitted, Q3 data were released, so we repeated the analysis with the newly available light curve. The results of the two quarters were quite similar. From the amplitude of the beaming modulation we derived a mass of 10±2MJup for the secondary, suggesting that KOI-13.01 was a massive planet, with one of the largest known radii. We also found in the data a periodicity of unknown origin with a period of 1.0595d and a peak-to-peak modulation of ∼60ppm. The light curve of Q3 revealed a few additional small-amplitude periodicities with similar frequencies. It seemed as if the secondary occultation of KOI-13 was slightly deeper than the reflection peak-to-peak modulation by 16.8±4.5ppm. If real, this small difference was a measure of the thermal emission from the night side of KOI-13.01. We estimated the effective temperature to be 2600±150K, using a simplistic black-body emissivity approximation. We then derived the planetary geometrical and Bond albedos as a function of the day-side temperature. Our analysis suggested that the Bond albedo of KOI-13.01 might be substantially larger than the geometrical albedo.

Abstract Copyright:

Journal keyword(s): methods: data analysis - planetary systems - planets and satellites: detection

Simbad objects: 15

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Number of rows : 15
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-32b Pl 02 04 10.2774374568 +46 41 16.212315084           ~ 158 1
2 HAT-P-33b Pl 07 32 44.2173520776 +33 50 06.115051104           ~ 57 1
3 CD-27 10695b Pl 15 59 50.9491505016 -28 03 42.312819096           ~ 261 1
4 Kepler-9d Pl 19 02 17.7544327200 +38 24 03.176851896           ~ 58 1
5 Kepler-10c Pl 19 02 43.0613892904 +50 14 28.701617339           ~ 121 1
6 Kepler-1 EB* 19 07 14.0375836512 +49 18 59.091482160   11.85 11.25     G0V 177 2
7 BD+46 2629B ** 19 07 53.0281202688 +46 52 06.126010932   10.66 10.48     ~ 27 1
8 BD+46 2629 EB* 19 07 53.104944 +46 52 06.00420   10.12 9.70 9.80   kA2hA5mA7(IV)m: 157 0
9 BD+46 2629A * 19 07 53.1397066992 +46 52 05.922122844           ~ 42 1
10 NAME BD+46 2629Ab Pl 19 07 53.1397066992 +46 52 05.922122844           ~ 168 1
11 KOI-964 EB* 19 13 59.8696461528 +47 59 47.244395688           ~ 48 0
12 CoRoT-3 EB* 19 28 13.2642131544 +00 07 18.613986132   14.199 13.292 13.099 12.54 F3V 79 1
13 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 307 2
14 BD+47 2846b Pl 19 28 59.3538826128 +47 58 10.217007804           ~ 380 1
15 Kepler-11g Pl 19 48 27.6226218768 +41 54 32.903163504           ~ 79 1

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