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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28064
Title: An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope
Authors: Haywood, Raphaëlle D.
Vanderburg, Andrew
Mortier, Annelies
Giles, Helen A. C.
López-Morales, Mercedes
Lopez, Eric D.
Malavolta, Luca 
Charbonneau, David
Collier Cameron, Andrew
Coughlin, Jeffrey L.
Dressing, Courtney D.
Nava, Chantanelle
Latham, David W.
Dumusque, Xavier
Lovis, Christophe
MOLINARI, Emilio Carlo 
Pepe, Francesco
SOZZETTI, Alessandro 
Udry, Stéphane
Bouchy, François
Johnson, John A.
Mayor, Michel
MICELA, Giuseppina 
Phillips, David
Piotto, Giampaolo
Rice, Ken
Sasselov, Dimitar
Ségransan, Damien
Watson, Chris
AFFER, Laura 
BONOMO, ALDO STEFANO 
Buchhave, Lars A.
Ciardi, David R.
Fiorenzano, Aldo F.
HARUTYUNYAN, AVET
Issue Date: 2018
Journal: THE ASTRONOMICAL JOURNAL 
Number: 155
Issue: 5
First Page: 203
Abstract: We present the confirmation of a small, moderately irradiated (F = 155 ± 7 F <SUB>⊕</SUB>) Neptune with a substantial gas envelope in a P = 11.8728787 ± 0.0000085 day orbit about a quiet, Sun-like G0V star Kepler-1655. Based on our analysis of the Kepler light curve, we determined Kepler-1655b’s radius to be 2.213 ± 0.082 R <SUB>⊕</SUB>. We acquired 95 high-resolution spectra with Telescopio Nazionale Galileo/HARPS-N, enabling us to characterize the host star and determine an accurate mass for Kepler-1655b of 5.0{+/- }<SUB>2.8</SUB><SUP>3.1</SUP> {M}<SUB>\oplus </SUB> via Gaussian-process regression. Our mass determination excludes an Earth-like composition with 98% confidence. Kepler-1655b falls on the upper edge of the evaporation valley, in the relatively sparsely occupied transition region between rocky and gas-rich planets. It is therefore part of a population of planets that we should actively seek to characterize further.
URI: http://hdl.handle.net/20.500.12386/28064
URL: https://iopscience.iop.org/article/10.3847/1538-3881/aab8f3
ISSN: 0004-6256
DOI: 10.3847/1538-3881/aab8f3
Bibcode ADS: 2018AJ....155..203H
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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