J/ApJ/831/64 Mass-metallicity relation for giant planets (Thorngren+, 2016)
The mass-metallicity relation for giant planets.
Thorngren D.P., Fortney J.J., Murray-Clay R.A., Lopez E.D.
<Astrophys. J., 831, 64-64 (2016)>
=2016ApJ...831...64T 2016ApJ...831...64T (SIMBAD/NED BibCode)
ADC_Keywords: Abundances ; Stars, masses ; Planets
Keywords: planets and satellites: composition;
planets and satellites: gaseous planets;
planets and satellites: interiors;
planets and satellites: physical evolution
Abstract:
Exoplanet discoveries of recent years have provided a great deal of
new data for studying the bulk compositions of giant planets. Here we
identify 47 transiting giant planets (20 M⊕ < M < 20 MJ)
whose stellar insolations are low enough (F* < 2 x 108 erg s-1
cm-2, or roughly Teff < 1000) that they are not affected by the
hot-Jupiter radius inflation mechanism(s). We compute a set of new
thermal and structural evolution models and use these models in
comparison with properties of the 47 transiting planets (mass, radius,
age) to determine their heavy element masses. A clear correlation
emerges between the planetary heavy element mass Mz and the total
planet mass, approximately of the form Mz∝\sqrtM. This finding
is consistent with the core-accretion model of planet formation. We
also study how stellar metallicity [Fe/H] affects planetary
metal-enrichment and find a weaker correlation than has previously
been reported from studies with smaller sample sizes. We confirm a
strong relationship between the planetary metal-enrichment relative to
the parent star Zplanet/Zstar and the planetary mass, but see no
relation in Zplanet/Zstar with planet orbital properties or
stellar mass. The large heavy element masses of many planets (>50
M⊕) suggest significant amounts of heavy elements in H/He
envelopes, rather than cores, such that metal-enriched giant planet
atmospheres should be the rule. We also discuss a model of
core-accretion planet formation in a one-dimensional disk and show
that it agrees well with our derived relation between mass and
Zplanet/Zstar.
Description:
Our data was downloaded from the Extrasolar Planets Encyclopedia
(exoplanets.eu, Schneider+ 2011A&A...532A..79S 2011A&A...532A..79S) and the NASA Exoplanet
Archive (Akeson+ 2013PASP..125..989A 2013PASP..125..989A).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 148 47 Planet data and results
refs.dat 137 47 References
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See also:
B/corot : CoRoT observation log (N2-4.4) (CoRoT 2016)
J/A+A/590/A112 : Kepler-539 CAFE radial velocity measurements (Mancini+, 2016)
J/A+A/573/A124 : Kepler-117 (KOI-209) transit-timing variations (Bruno+, 2015)
J/AJ/150/33 : Photometry & spectroscopy of HATS-9 and HATS-10 (Brahm+, 2015)
J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)
J/AJ/149/149 : Photometry and spectroscopy of HAT-P-54 (Bakos+, 2015)
J/ApJS/210/25 : Transit timing variation for planetary pairs. II. (Xie, 2014)
J/MNRAS/445/1114 : WASP-69b, WASP-70Ab and WASP-84b (Anderson+, 2014)
J/A+A/571/A37 : KOI-1257 photometric and velocimetric data (Santerne+, 2014)
J/A+A/549/A134 : 4 new WASP transiting close-in giant planets (Hebrard+, 2013)
J/ApJ/764/18 : Frequencies of giant exoplanets (Le Bihan+, 2013)
J/ApJ/749/134 : HAT-P-17 radial velocities and light curves (Howard+, 2012)
J/other/Nat/481.475 : RVs of Kepler-34b + Kepler-35b (Welsh+, 2012)
J/PASP/123/412 : Exoplanet Orbit Database (Wright+, 2011)
J/ApJ/742/116 : Photometry of 4 massive transiting exoplanets (Bakos+, 2011)
J/ApJ/726/52 : HAT-P-18 and HAT-P-19 follow-up (Hartman+, 2011)
J/ApJ/724/866 : Follow-up observations of HAT-P-15 (Kovacs+, 2010)
J/ApJ/710/1724 : Follow-up photometry for HAT-P-11 (Bakos+, 2010)
J/A+A/520/A66 : CoRoT-8b light and RV curves (Borde+, 2010)
J/A+A/517/L1 : Radial velocities of WASP-8b planet (Queloz+, 2010)
J/A+A/502/695 : Observations of HD 80606 planetary system (Pont+, 2009)
J/ApJ/706/785 : HAT-P-12 light curve (Hartman+, 2009)
http://exoplanet.eu/ : The Extrasola Planets Encyclopaedia
http://exoplanetarchive.ipac.caltech.edu/ : NASA Exoplanet Archive
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Sequence/Reference (see refs.dat file)
4- 15 A12 --- Note Notes on System (1)
17- 28 A12 --- Name Planet name
30- 34 F5.2 Mjup Mass [0.06/10.1] Planet mass, Jupiter masses
36- 39 F4.2 Mjup e_Mass [0.01/0.7] Lower uncertainty on Mass
41- 44 F4.2 Mjup E_Mass Upper uncertainty on Mass
46- 49 F4.2 Rjup Rad [0.3/1.1] Planet radius, Jupiter radii
51- 54 F4.2 Rjup e_Rad [0/0.2] Lower uncertainty on Rad
56- 59 F4.2 Rjup E_Rad Upper uncertainty on Rad
61- 63 F3.1 Gyr ageLower [0.1/8] Lower bound on age, Gyr
65- 68 F4.1 Gyr ageUpper [1/17] Upper bound on age, Gyr
70- 77 E8.2 mW/m2 Flux Flux, Planet time-averaged insolation
79- 83 F5.2 [Sun] [Fe/H] [-0.4/0.5] Metallicity
85- 88 F4.2 [Sun] e_[Fe/H] [0.03/0.3] Lower uncertainty on [Fe/H]
90- 93 F4.2 [Sun] E_[Fe/H] Upper uncertainty on [Fe/H]
95-100 F6.2 Mgeo Metal [0/663] Metal Mass, Earth masses
102-107 F6.2 Mgeo e_Metal [0/110] Lower uncertainty on Metal
109-114 F6.2 Mgeo E_Metal [1/134] Upper uncertainty on Metal
116-119 F4.2 --- zpl [0/1] Planet bulk metal abundance
121-124 F4.2 --- e_zpl [0/0.2] Lower uncertainty on zpl
126-129 F4.2 --- E_zpl Upper uncertainty on zpl
131-136 F6.2 --- zpzs [0/133] Planet / Stellar bulk metal abundance
138-142 F5.2 --- e_zpzs [0/71] Lower uncertainty on zpzs
144-148 F5.2 --- E_zpzs [0.4/41] Upper uncertainty on zpzs
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Note (1): Comments on Planets:
adjusted = Results adjusted to reflect the fact that a certain portion of
their samples could not be modeled
(see Section 4 for discussion).
circumbinary = indicates circumbinary planets.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference code
4- 22 A19 --- BibCode Bibcode of the reference
24- 43 A20 --- Auth First author's name
45-137 A93 --- Comm Comment
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 25-Jan-2017