Publications

BibTex format

@article{Bean:2021:10.1029/2020JE006639,
author = {Bean, JL and Raymond, SN and Owen, JE},
doi = {10.1029/2020JE006639},
journal = {Journal of Geophysical Research: Planets},
pages = {1--20},
title = {The nature and origins of sub-Neptune size planets},
url = {http://dx.doi.org/10.1029/2020JE006639},
volume = {126},
year = {2021}
}

Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Planets intermediate in size between the Earth and Neptune, and orbiting closer to their host stars than Mercury does the Sun, are the most common type of planet revealed by exoplanet surveys over the last quarter century. Results from NASA's Kepler mission have revealed a bimodality in the radius distribution of these objects, with a relative underabundance of planets between 1.5 and 2.0 urn:x-wiley:21699097:media:jgre21507:jgre21507-math-0001. This bimodality suggests that subNeptunes are mostly rocky planets that were born with primary atmospheres a few percent by mass accreted from the protoplanetary nebula. Planets above the radius gap were able to retain their atmospheres (“gasrich superEarths”), while planets below the radius gap lost their atmospheres and are stripped cores (“true superEarths”). The mechanism that drives atmospheric loss for these planets remains an outstanding question, with photoevaporation and corepowered mass loss being the prime candidates. As with the massloss mechanism, there are two contenders for the origins of the solids in subNeptune planets: the migration model involves the growth and migration of embryos from beyond the ice line, while the drift model involves inwarddrifting pebbles that coagulate to form planets closein. Atmospheric studies have the potential to break degeneracies in interior structure models and place additional constraints on the origins of these planets. However, most atmospheric characterization efforts have been confounded by aerosols. Observations with upcoming facilities are expected to finally reveal the atmospheric compositions of these worlds, which are arguably the first fundamentally new type of planetary object identified from the study of exoplanets.
AU  - Bean,JL
AU  - Raymond,SN
AU  - Owen,JE
DO  - 10.1029/2020JE006639
EP  - 20
PY  - 2021///
SN  - 2169-9097
SP  - 1
TI  - The nature and origins of sub-Neptune size planets
T2  - Journal of Geophysical Research: Planets
UR  - http://dx.doi.org/10.1029/2020JE006639
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000614139300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JE006639
UR  - http://hdl.handle.net/10044/1/87230
VL  - 126
ER  -

Download

DrJamesOwen

Contact

Location

Summary

Citation

BibTex format

RIS format (EndNote, RefMan)