Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28855
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li Zeng | en_US |
dc.contributor.author | Stein B. Jacobsen | en_US |
dc.contributor.author | Dimitar D. Sasselov | en_US |
dc.contributor.author | Michail I. Petaev | en_US |
dc.contributor.author | Andrew Vanderburg | en_US |
dc.contributor.author | Mercedes Lopez-Morales | en_US |
dc.contributor.author | Juan Perez-Mercader | en_US |
dc.contributor.author | Thomas R. Mattsson | en_US |
dc.contributor.author | Gongjie Li | en_US |
dc.contributor.author | Matthew Z. Heising | en_US |
dc.contributor.author | BONOMO, ALDO STEFANO | en_US |
dc.contributor.author | Damasso, Mario | en_US |
dc.contributor.author | Travis A. Berger | en_US |
dc.contributor.author | Hao Cao | en_US |
dc.contributor.author | Amit Levi | en_US |
dc.contributor.author | Robin D. Wordsworth | en_US |
dc.date.accessioned | 2020-12-15T11:58:42Z | - |
dc.date.available | 2020-12-15T11:58:42Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0027-8424 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28855 | - |
dc.description.abstract | The radii and orbital periods of 4000+ confirmed/candidate exoplanets have been precisely measured by the Kepler mission. The radii show a bimodal distribution, with two peaks corresponding to smaller planets (likely rocky) and larger intermediate-size planets, respectively. While only the masses of the planets orbiting the brightest stars can be determined by ground-based spectroscopic observations, these observations allow calculation of their average densities placing constraints on the bulk compositions and internal structures. Yet an important question about the composition of planets ranging from 2 to 4 Earth radii still remains. They may either have a rocky core enveloped in a H2-He gaseous envelope (gas dwarfs) or contain a significant amount of multi-component, H2O-dominated ices/fluids (water worlds). Planets in the mass range of 10-15 Earth masses, if half-ice and half-rock by mass, have radii of 2.5 Earth radii, which exactly match the second peak of the exoplanet radius bimodal distribution. Any planet in the 2-4 Earth radii range requires a gas envelope of at most a few mass percentage points, regardless of the core composition. To resolve the ambiguity of internal compositions, we use a growth model and conduct Monte Carlo simulations to demonstrate that many intermediate-size planets are water worlds. | en_US |
dc.language.iso | eng | en_US |
dc.title | Growth Model Interpretation of Planet Size Distribution | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1073/pnas.1812905116 | en_US |
dc.identifier.scopus | 2-s2.0-85065707318 | en_US |
dc.identifier.isi | 000467804000011 | en_US |
dc.identifier.url | http://arxiv.org/abs/1906.04253v1 | en_US |
dc.identifier.url | https://www.pnas.org/content/116/20/9723 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 116 | en_US |
dc.relation.issue | 20 | en_US |
dc.relation.firstpage | 9723 | en_US |
dc.relation.lastpage | 9728 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.orcid | 0000-0002-6177-198X | - |
crisitem.author.orcid | 0000-0001-9984-4278 | - |
crisitem.journal.journalissn | 0027-8424 | - |
crisitem.journal.ance | E136702 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Zengetal_2019.pdf | postprint | 1.85 MB | Adobe PDF | View/Open |
9723.full.pdf | [Administrators only] | 1.92 MB | Adobe PDF |
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