J/ApJ/742/L19 Physics of Kepler hot rocky planetary candidates (Miguel+, 2011)
Compositions of hot super-Earth atmospheres: exploring Kepler candidates.
Miguel Y., Kaltenegger L., Fegley B., Schaefer L.
<Astrophys. J., 742, L19 (2011)>
=2011ApJ...742L..19M 2011ApJ...742L..19M
ADC_Keywords: Planets ; Stars, double and multiple ; Stars, diameters ;
Effective temperatures ; Models
Keywords: astrobiology - planets and satellites: composition -
planets and satellites: atmospheres - atmospheric effects
Abstract:
This paper outlines a simple approach to evaluate the atmospheric
composition of hot rocky planets by assuming different types of
planetary composition and using corresponding model calculations. To
explore hot atmospheres above 1000K, we model the vaporization of
silicate magma and estimate the range of atmospheric compositions
according to the planet's radius and semi-major axis for the Kepler
2011 February data release. Our results show five atmospheric types
for hot, rocky super-Earth atmospheres, strongly dependent on the
initial composition and the planet's distance to the star. We provide
a simple set of parameters that can be used to evaluate atmospheric
compositions for current and future candidates provided by the Kepler
mission and other searches.
Description:
The Kepler mission recently announced 1235 planetary candidates
(Borucki et al. 2011, Cat. J/ApJ/736/19), of which 615 are consistent
with models of rocky interior (R<2±0.5R⊕), accounting for
the 25% error in radii in the Kepler data set). Of these Kepler
objects of interest (KOI), 193 have potentially extremely high
temperatures on their surfaces (Tp>1000K, when assuming a 0.01
albedo), due to the intense stellar irradiation to which they are
exposed, because of their proximity to the central star.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 32 191 Planetary and stellar parameters for Kepler
candidates with radius less than 2.5 Earth radius
and temperatures higher than 1000K
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/ApJ/736/L25 : Habitability of Kepler planet candidates (Kaltenegger+, 2011)
J/ApJ/707/1707 : Ks-band light curve of CoRoT-1b (Rogers+, 2009)
J/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 F7.2 --- KOI [69.01/1608.01] Kepler-Object-of-Interest number
9- 13 F5.3 AU a Semi-major axis of planetary candidate
15- 17 F3.1 Rgeo Rp [0.6/2.5] Radius of planetary candidate
19- 22 I4 K Tp [1001/3074] Equilibrium temperature of planet
24- 27 I4 K Teff [3684/6869] Effective temperature of star
29- 32 F4.2 Rsun R* [0.53/1.88] Radius of parent star
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 26-Apr-2013