Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28735
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Gettel, Sara | en_US |
dc.contributor.author | Charbonneau, David | en_US |
dc.contributor.author | Dressing, Courtney D. | en_US |
dc.contributor.author | Buchhave, Lars A. | en_US |
dc.contributor.author | Dumusque, Xavier | en_US |
dc.contributor.author | Vanderburg, Andrew | en_US |
dc.contributor.author | BONOMO, ALDO STEFANO | en_US |
dc.contributor.author | Malavolta, Luca | en_US |
dc.contributor.author | Pepe, Francesco | en_US |
dc.contributor.author | Collier Cameron, Andrew | en_US |
dc.contributor.author | Latham, David W. | en_US |
dc.contributor.author | Udry, Stéphane | en_US |
dc.contributor.author | Marcy, Geoffrey W. | en_US |
dc.contributor.author | Isaacson, Howard | en_US |
dc.contributor.author | Howard, Andrew W. | en_US |
dc.contributor.author | Davies, Guy R. | en_US |
dc.contributor.author | Silva Aguirre, Victor | en_US |
dc.contributor.author | Kjeldsen, Hans | en_US |
dc.contributor.author | Bedding, Timothy R. | en_US |
dc.contributor.author | Lopez, Eric | en_US |
dc.contributor.author | AFFER, Laura | en_US |
dc.contributor.author | COSENTINO, Rosario | en_US |
dc.contributor.author | Figueira, Pedro | en_US |
dc.contributor.author | Fiorenzano, Aldo F. M. | en_US |
dc.contributor.author | HARUTYUNYAN, AVET | en_US |
dc.contributor.author | Johnson, John Asher | en_US |
dc.contributor.author | Lopez-Morales, Mercedes | en_US |
dc.contributor.author | Lovis, Christophe | en_US |
dc.contributor.author | Mayor, Michel | en_US |
dc.contributor.author | MICELA, Giuseppina | en_US |
dc.contributor.author | MOLINARI, Emilio Carlo | en_US |
dc.contributor.author | Motalebi, Fatemeh | en_US |
dc.contributor.author | Phillips, David F. | en_US |
dc.contributor.author | Piotto, Giampaolo | en_US |
dc.contributor.author | Queloz, Didier | en_US |
dc.contributor.author | Rice, Ken | en_US |
dc.contributor.author | Sasselov, Dimitar | en_US |
dc.contributor.author | Ségransan, Damien | en_US |
dc.contributor.author | SOZZETTI, Alessandro | en_US |
dc.contributor.author | Watson, Chris | en_US |
dc.contributor.author | Basu, Sarbani | en_US |
dc.contributor.author | Campante, Tiago L. | en_US |
dc.contributor.author | Christensen-Dalsgaard, Jørgen | en_US |
dc.contributor.author | Kawaler, Steven D. | en_US |
dc.contributor.author | Metcalfe, Travis S. | en_US |
dc.contributor.author | Handberg, Rasmus | en_US |
dc.contributor.author | Lund, Mikkel N. | en_US |
dc.contributor.author | Lundkvist, Mia S. | en_US |
dc.contributor.author | Huber, Daniel | en_US |
dc.contributor.author | Chaplin, William J. | en_US |
dc.date.accessioned | 2020-12-09T11:34:17Z | - |
dc.date.available | 2020-12-09T11:34:17Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28735 | - |
dc.description.abstract | Kepler-454 (KOI-273) is a relatively bright (V = 11.69 mag), Sun-like star that hosts a transiting planet candidate in a 10.6 day orbit. From spectroscopy, we estimate the stellar temperature to be 5687 ± 50 K, its metallicity to be [m/H] = 0.32 ± 0.08, and the projected rotational velocity to be v sin I < 2.4 km s<SUP>-1</SUP>. We combine these values with a study of the asteroseismic frequencies from short cadence Kepler data to estimate the stellar mass to be {1.028}<SUB>-0.03</SUB><SUP>+0.04</SUP>{M}<SUB>☉ </SUB>, the radius to be 1.066 ± 0.012 R<SUB>☉</SUB>, and the age to be {5.25}<SUB>-1.39</SUB><SUP>+1.41</SUP> Gyr. We estimate the radius of the 10.6 day planet as 2.37 ± 0.13 R<SUB>⊕</SUB>. Using 63 radial velocity observations obtained with the HARPS-N spectrograph on the Telescopio Nazionale Galileo and 36 observations made with the HIRES spectrograph at the Keck Observatory, we measure the mass of this planet to be 6.8 ± 1.4 M<SUB>⊕</SUB>. We also detect two additional non-transiting companions, a planet with a minimum mass of 4.46 ± 0.12 M<SUB>J</SUB> in a nearly circular 524 day orbit and a massive companion with a period >10 years and mass >12.1 M<SUB>J</SUB>. The 12 exoplanets with radii <2.7 R<SUB>⊕</SUB> and precise mass measurements appear to fall into two populations, with those <1.6 R<SUB>⊕</SUB> following an Earth-like composition curve and larger planets requiring a significant fraction of volatiles. With a density of 2.76 ± 0.73 g cm<SUP>-3</SUP>, Kepler-454b lies near the mass transition between these two populations and requires the presence of volatiles and/or H/He gas. | en_US |
dc.language.iso | eng | en_US |
dc.title | The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/816/2/95 | en_US |
dc.identifier.scopus | 2-s2.0-84954537907 | en_US |
dc.identifier.isi | 000368238500047 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/816/2/95 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 816 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 95 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...816...95G | 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. Palermo | - |
crisitem.author.dept | O.A. Catania | - |
crisitem.author.dept | O.A. Palermo | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.orcid | 0000-0002-6177-198X | - |
crisitem.author.orcid | 0000-0002-6492-2085 | - |
crisitem.author.orcid | 0000-0001-5600-3778 | - |
crisitem.author.orcid | 0000-0003-1784-1431 | - |
crisitem.author.orcid | 0000-0002-9900-4751 | - |
crisitem.author.orcid | 0000-0002-1742-7735 | - |
crisitem.author.orcid | 0000-0002-7504-365X | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Getteletal_2016.pdf | Pdf editoriale | 1.85 MB | Adobe PDF | View/Open |
Page view(s)
68
checked on Apr 24, 2024
Download(s)
28
checked on Apr 24, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.