Identifying Inflated Super-Earths and Photo-evaporated Cores

Detalhes bibliográficos
Autor(a) principal: Carrera, Daniel
Data de Publicação: 2018
Outros Autores: Ford, Eric B., Izidoro, Andre [UNESP], Jontof-Hutter, Daniel, Raymond, Sean N., Wolfgang, Angie
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3847/1538-4357/aadf8a
http://hdl.handle.net/11449/186992
Resumo: We present empirical evidence, supported by a planet formation model, to show that the curve approximates the location of the so-called photo-evaporation valley. Planets below that curve are likely to have experienced complete photo-evaporation, and planets just above it appear to have inflated radii; thus we identify a new population of inflated super-Earths and mini-Neptunes. Our N-body simulations are set within an evolving protoplanetary disk and include prescriptions for orbital migration, gas accretion, and atmospheric loss due to giant impacts. Our simulated systems broadly match the sizes and periods of super-Earths in the Kepler catalog. They also reproduce the relative sizes of adjacent planets in the same system, with the exception of planet pairs that straddle the photo-evaporation valley. This latter group is populated by planet pairs with either very large or very small size ratios (R out /R in ≫ 1 or R out /R in ≪ 1) and a dearth of size ratios near unity. It appears that this feature could be reproduced if the planet outside the photo-evaporation valley (typically the outer planet, but sometimes not) has its atmosphere significantly expanded by stellar irradiation. This new population of planets may be ideal targets for future transit spectroscopy observations with the upcoming James Webb Space Telescope.
id UNSP_7f5b900140588d9d1f5c69228e9b685e
oai_identifier_str oai:repositorio.unesp.br:11449/186992
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Identifying Inflated Super-Earths and Photo-evaporated Coresplanets and satellites: atmospheresplanets and satellites: compositionplanets and satellites: dynamical evolution and stabilityplanets and satellites: formationWe present empirical evidence, supported by a planet formation model, to show that the curve approximates the location of the so-called photo-evaporation valley. Planets below that curve are likely to have experienced complete photo-evaporation, and planets just above it appear to have inflated radii; thus we identify a new population of inflated super-Earths and mini-Neptunes. Our N-body simulations are set within an evolving protoplanetary disk and include prescriptions for orbital migration, gas accretion, and atmospheric loss due to giant impacts. Our simulated systems broadly match the sizes and periods of super-Earths in the Kepler catalog. They also reproduce the relative sizes of adjacent planets in the same system, with the exception of planet pairs that straddle the photo-evaporation valley. This latter group is populated by planet pairs with either very large or very small size ratios (R out /R in ≫ 1 or R out /R in ≪ 1) and a dearth of size ratios near unity. It appears that this feature could be reproduced if the planet outside the photo-evaporation valley (typically the outer planet, but sometimes not) has its atmosphere significantly expanded by stellar irradiation. This new population of planets may be ideal targets for future transit spectroscopy observations with the upcoming James Webb Space Telescope.Center for Exoplanets and Habitable Worlds 525 Davey Laboratory Pennsylvania State UniversityDepartment of Astronomy and Astrophysics Pennsylvania State University, 525 Davey LaboratoryInstitute for CyberScience Pennsylvania State UniversityUNESP Universidade Estadual Paulista Grupo de Dinamica Orbital and Planetologia, GuaratinguetáLaboratoire d'Astrophysique de Bordeaux Université de Bordeaux CNRS, B18N, Allée Geoffroy Saint-HilaireUNESP Universidade Estadual Paulista Grupo de Dinamica Orbital and Planetologia, GuaratinguetáPennsylvania State UniversityUniversidade Estadual Paulista (Unesp)CNRSCarrera, DanielFord, Eric B.Izidoro, Andre [UNESP]Jontof-Hutter, DanielRaymond, Sean N.Wolfgang, Angie2019-10-06T15:22:10Z2019-10-06T15:22:10Z2018-10-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3847/1538-4357/aadf8aAstrophysical Journal, v. 866, n. 2, 2018.1538-43570004-637Xhttp://hdl.handle.net/11449/18699210.3847/1538-4357/aadf8a2-s2.0-85055346810Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAstrophysical Journalinfo:eu-repo/semantics/openAccess2021-10-23T19:49:58Zoai:repositorio.unesp.br:11449/186992Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:01:38.708578Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Identifying Inflated Super-Earths and Photo-evaporated Cores
title Identifying Inflated Super-Earths and Photo-evaporated Cores
spellingShingle Identifying Inflated Super-Earths and Photo-evaporated Cores
Carrera, Daniel
planets and satellites: atmospheres
planets and satellites: composition
planets and satellites: dynamical evolution and stability
planets and satellites: formation
title_short Identifying Inflated Super-Earths and Photo-evaporated Cores
title_full Identifying Inflated Super-Earths and Photo-evaporated Cores
title_fullStr Identifying Inflated Super-Earths and Photo-evaporated Cores
title_full_unstemmed Identifying Inflated Super-Earths and Photo-evaporated Cores
title_sort Identifying Inflated Super-Earths and Photo-evaporated Cores
author Carrera, Daniel
author_facet Carrera, Daniel
Ford, Eric B.
Izidoro, Andre [UNESP]
Jontof-Hutter, Daniel
Raymond, Sean N.
Wolfgang, Angie
author_role author
author2 Ford, Eric B.
Izidoro, Andre [UNESP]
Jontof-Hutter, Daniel
Raymond, Sean N.
Wolfgang, Angie
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Pennsylvania State University
Universidade Estadual Paulista (Unesp)
CNRS
dc.contributor.author.fl_str_mv Carrera, Daniel
Ford, Eric B.
Izidoro, Andre [UNESP]
Jontof-Hutter, Daniel
Raymond, Sean N.
Wolfgang, Angie
dc.subject.por.fl_str_mv planets and satellites: atmospheres
planets and satellites: composition
planets and satellites: dynamical evolution and stability
planets and satellites: formation
topic planets and satellites: atmospheres
planets and satellites: composition
planets and satellites: dynamical evolution and stability
planets and satellites: formation
description We present empirical evidence, supported by a planet formation model, to show that the curve approximates the location of the so-called photo-evaporation valley. Planets below that curve are likely to have experienced complete photo-evaporation, and planets just above it appear to have inflated radii; thus we identify a new population of inflated super-Earths and mini-Neptunes. Our N-body simulations are set within an evolving protoplanetary disk and include prescriptions for orbital migration, gas accretion, and atmospheric loss due to giant impacts. Our simulated systems broadly match the sizes and periods of super-Earths in the Kepler catalog. They also reproduce the relative sizes of adjacent planets in the same system, with the exception of planet pairs that straddle the photo-evaporation valley. This latter group is populated by planet pairs with either very large or very small size ratios (R out /R in ≫ 1 or R out /R in ≪ 1) and a dearth of size ratios near unity. It appears that this feature could be reproduced if the planet outside the photo-evaporation valley (typically the outer planet, but sometimes not) has its atmosphere significantly expanded by stellar irradiation. This new population of planets may be ideal targets for future transit spectroscopy observations with the upcoming James Webb Space Telescope.
publishDate 2018
dc.date.none.fl_str_mv 2018-10-20
2019-10-06T15:22:10Z
2019-10-06T15:22:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3847/1538-4357/aadf8a
Astrophysical Journal, v. 866, n. 2, 2018.
1538-4357
0004-637X
http://hdl.handle.net/11449/186992
10.3847/1538-4357/aadf8a
2-s2.0-85055346810
url http://dx.doi.org/10.3847/1538-4357/aadf8a
http://hdl.handle.net/11449/186992
identifier_str_mv Astrophysical Journal, v. 866, n. 2, 2018.
1538-4357
0004-637X
10.3847/1538-4357/aadf8a
2-s2.0-85055346810
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Astrophysical Journal
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128306996838400