2010ApJ...711..111M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.29CET21:08:52

2010ApJ...711..111M - Astrophys. J., 711, 111-118 (2010/March-1)

Thermal emission and tidal heating of the heavy and eccentric planet XO-3b.

MACHALEK P., GREENE T., McCULLOUGH P.R., BURROWS A., BURKE C.J., HORA J.L., JOHNS-KRULL C.M. and DEMING D.L.

Abstract (from CDS):

We determined the flux ratios of the heavy and eccentric planet XO-3b to its parent star in the four Infrared Array Camera bands of the Spitzer Space Telescope: 0.101%±0.004% at 3.6 µm; 0.143%±0.006% at 4.5 µm; 0.134%±0.049% at 5.8 µm; and 0.150%±0.036% at 8.0 µm. The flux ratios are within [-2.2, 0.3, -0.8, and -1.7]σ of the model of XO-3b with a thermally inverted stratosphere in the 3.6 µm, 4.5 µm, 5.8 µm, and 8.0 µm channels, respectively. XO-3b has a high illumination from its parent star (Fp∼ (1.9-4.2)x109 erg/cm2/s) and is thus expected to have a thermal inversion, which we indeed observe. When combined with existing data for other planets, the correlation between the presence of an atmospheric temperature inversion and the substellar flux is insufficient to explain why some high insolation planets like TrES-3 do not have stratospheric inversions and some low insolation planets like XO-1b do have inversions. Secondary factors such as sulfur chemistry, atmospheric metallicity, amounts of macroscopic mixing in the stratosphere, or even dynamical weather effects likely play a role. Using the secondary eclipse timing centroids, we determined the orbital eccentricity of XO-3b as e = 0.277±0.009. The model radius-age trajectories for XO-3b imply that at least some amount of tidal heating is required to inflate the radius of XO-3b, and the tidal heating parameter of the planet is constrained to Qp≲ 106.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - infrared: stars - planetary systems - stars: individual: XO-3

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 BD+57 793 * 04 21 52.7044170433 +57 49 01.892074012   10.27 9.85     F5V 131 2
2 BD+57 793b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 175 1
3 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1158 3
4 BD+50 1471b Pl 07 48 06.4726006390 +50 13 32.921121328           ~ 132 1
5 BD+50 1471 PM* 07 48 06.4726006390 +50 13 32.921121328   12.002 11.138 10.669 10.243 G9V 141 1
6 OGLE-TR 113 SB* 10 52 24.2808297652 -61 26 48.845891762     16.08 15.41 14.42 K 112 1
7 BD+28 2507b Pl 16 02 11.8463105423 +28 10 10.419642379           ~ 160 1
8 TrES-3 Pl 17 52 07.0185036683 +37 32 46.237002085           ~ 196 2
9 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 286 2
10 WASP-2 ** 20 30 54.1279218812 +06 25 46.338261893   13 11.98     K1.5+M1V-M4V 118 2
11 BD+37 4734B PM* 22 57 46.8443014981 +38 40 30.355384717   10.82 9.87     G0V 143 1
12 NAME BD+37 4734Bb Pl 22 57 46.8443014981 +38 40 30.355384717           ~ 201 1

    Equat.    Gal    SGal    Ecl

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2020.10.29-21:08:52

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