dc.contributor.author |
Suzuki, Daisuke |
|
dc.contributor.author |
Bennett, David P |
|
dc.contributor.author |
Ida, Shigeru |
|
dc.contributor.author |
Mordasini, Christoph |
|
dc.contributor.author |
Bhattacharya, Aparna |
|
dc.contributor.author |
Bond, Ian A |
|
dc.contributor.author |
Donachie, Martin |
|
dc.contributor.author |
Fukui, Akihiko |
|
dc.contributor.author |
Hirao, Yuki |
|
dc.contributor.author |
Koshimoto, Naoki |
|
dc.contributor.author |
Miyazaki, Shota |
|
dc.contributor.author |
Nagakane, Masayuki |
|
dc.contributor.author |
Ranc, Clément |
|
dc.contributor.author |
Rattenbury, Nicholas J |
|
dc.contributor.author |
Sumi, Takahiro |
|
dc.contributor.author |
Alibert, Yann |
|
dc.contributor.author |
Lin, Douglas NC |
|
dc.date.accessioned |
2023-03-08T03:41:23Z |
|
dc.date.available |
2023-03-08T03:41:23Z |
|
dc.date.issued |
2018-12-20 |
|
dc.identifier.citation |
(2018). Letters of the Astrophysical Journal, 869(2), l34-. |
|
dc.identifier.issn |
2041-8205 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/63226 |
|
dc.description.abstract |
We compare the planet-to-star mass-ratio distribution measured by gravitational microlensing to core accretion theory predictions from population synthesis models. The core accretion theorys runaway gas accretion process predicts a dearth of intermediate-mass giant planets that is not seen in the microlensing results. In particular, the models predict ∼10 × fewer planets at mass ratios of 10-4 ≤ q ≤ 4 × 10-4 than inferred from microlensing observations. This tension implies that gas giant formation may involve processes that have hitherto been overlooked by existing core accretion models or that the planet-forming environment varies considerably as a function of host-star mass. Variation from the usual assumptions for the protoplanetary disk viscosity and thickness could reduce this discrepancy, but such changes might conflict with microlensing results at larger or smaller mass ratios, or with other observations. The resolution of this discrepancy may have important implications for planetary habitability because it has been suggested that the runaway gas accretion process may have triggered the delivery of water to our inner solar system. So, an understanding of giant planet formation may help us to determine the occurrence rate of habitable planets. |
|
dc.language |
English |
|
dc.publisher |
American Astronomical Society |
|
dc.relation.ispartofseries |
The Astrophysical Journal Letters |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.rights.uri |
https://arxiv.org/licenses/nonexclusive-distrib/1.0/license.html |
|
dc.subject |
Science & Technology |
|
dc.subject |
Physical Sciences |
|
dc.subject |
Astronomy & Astrophysics |
|
dc.subject |
gravitational lensing: micro |
|
dc.subject |
planetary systems |
|
dc.subject |
planets and satellites: formation |
|
dc.subject |
planet-disk interactions |
|
dc.subject |
DETERMINISTIC MODEL |
|
dc.subject |
PLANETARY FORMATION |
|
dc.subject |
SNOW LINE |
|
dc.subject |
MASS |
|
dc.subject |
SYSTEMS |
|
dc.subject |
STARS |
|
dc.subject |
SIMULATION |
|
dc.subject |
MIGRATION |
|
dc.subject |
JUPITER |
|
dc.subject |
DISKS |
|
dc.subject |
astro-ph.EP |
|
dc.subject |
0201 Astronomical and Space Sciences |
|
dc.title |
Microlensing Results Challenge the Core Accretion Runaway Growth Scenario for Gas Giants |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.3847/2041-8213/aaf577 |
|
pubs.issue |
2 |
|
pubs.begin-page |
l34 |
|
pubs.volume |
869 |
|
dc.date.updated |
2023-02-06T22:48:29Z |
|
dc.rights.holder |
Copyright: The authors |
en |
pubs.author-url |
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000454134400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d |
|
pubs.publication-status |
Published online |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.subtype |
Article |
|
pubs.subtype |
Journal |
|
pubs.elements-id |
759565 |
|
dc.identifier.eissn |
2041-8213 |
|
pubs.number |
ARTN L34 |
|
pubs.record-created-at-source-date |
2023-02-07 |
|
pubs.online-publication-date |
2018-12-19 |
|