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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 (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) and the NASA Exoplanet Archive (Akeson+ 2013PASP..125..989A). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 148 47 Planet data and results refs.dat 137 47 References
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
Bytes Format Units Label Explanations
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
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.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
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
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 25-Jan-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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