An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope

Raphaëlle D. Haywood; Andrew Vanderburg; Annelies Mortier; Helen A. C. Giles; Mercedes López-Morales; Eric D. Lopez; Luca Malavolta; David Charbonneau; Andrew Collier Cameron; Jeffrey L. Coughlin; Courtney D. Dressing; Chantanelle Nava; David W. Latham; Xavier Dumusque; Christophe Lovis; Emilio Molinari; Francesco Pepe; Alessandro Sozzetti; Stéphane Udry; François Bouchy; John A. Johnson; Michel Mayor; Giusi Micela; David Phillips; Giampaolo Piotto; Ken Rice; Dimitar Sasselov; Damien Ségransan; Chris Watson; Laura Affer; Aldo S. Bonomo; Lars A. Buchhave; David R. Ciardi; Aldo F. Fiorenzano; Avet Harutyunyan

doi:10.3847/1538-3881/aab8f3

An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope

Raphaëlle D. Haywood, Andrew Vanderburg, Annelies Mortier, Helen A. C. Giles, Mercedes López-Morales, Eric D. Lopez, Luca Malavolta, David Charbonneau, Andrew Collier Cameron, Jeffrey L. Coughlin, Courtney D. Dressing, Chantanelle Nava, David W. Latham, Xavier Dumusque, Christophe Lovis, Emilio Molinari, Francesco Pepe, Alessandro Sozzetti, Stéphane Udry, François BouchyJohn A. Johnson, Michel Mayor, Giusi Micela, David Phillips, Giampaolo Piotto, Ken Rice, Dimitar Sasselov, Damien Ségransan, Chris Watson, Laura Affer, Aldo S. Bonomo, Lars A. Buchhave, David R. Ciardi, Aldo F. Fiorenzano, Avet Harutyunyan

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present the confirmation of a small, moderately irradiated (F = 155 ± 7 F ⊕) 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 ⊕. 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{+/- }2.83.1 {M}\oplus 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.

Original language	English
Pages (from-to)	203
Journal	Astronomical Journal
Volume	155
Issue number	5
DOIs	https://doi.org/10.3847/1538-3881/aab8f3
Publication status	Published - 20 Apr 2018

Keywords / Materials (for Non-textual outputs)

stars: individual: Kepler-1655
KOI-280
KIC 4141376
2MASS J19064546+3912428
planets and satellites: detection
planets and satellites: gaseous planets

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http://adsabs.harvard.edu/abs/2018AJ....155..203H

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Haywood, R. D., Vanderburg, A., Mortier, A., Giles, H. A. C., López-Morales, M., Lopez, E. D., Malavolta, L., Charbonneau, D., Collier Cameron, A., Coughlin, J. L., Dressing, C. D., Nava, C., Latham, D. W., Dumusque, X., Lovis, C., Molinari, E., Pepe, F., Sozzetti, A., Udry, S., ... Harutyunyan, A. (2018). An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope. Astronomical Journal, 155(5), 203. https://doi.org/10.3847/1538-3881/aab8f3

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title = "An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope",

abstract = "We present the confirmation of a small, moderately irradiated (F = 155 ± 7 F ⊕) 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{\textquoteright}s radius to be 2.213 ± 0.082 R ⊕. 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\{+/- \}2.83.1 \{M\}\textbackslash{}oplus 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.",

keywords = "stars: individual: Kepler-1655, KOI-280, KIC 4141376, 2MASS J19064546+3912428, planets and satellites: detection, planets and satellites: gaseous planets",

author = "Haywood, \{Rapha{\"e}lle D.\} and Andrew Vanderburg and Annelies Mortier and Giles, \{Helen A. C.\} and Mercedes L{\'o}pez-Morales and Lopez, \{Eric D.\} and Luca Malavolta and David Charbonneau and \{Collier Cameron\}, Andrew and Coughlin, \{Jeffrey L.\} and Dressing, \{Courtney D.\} and Chantanelle Nava and Latham, \{David W.\} and Xavier Dumusque and Christophe Lovis and Emilio Molinari and Francesco Pepe and Alessandro Sozzetti and St{\'e}phane Udry and Fran{\c c}ois Bouchy and Johnson, \{John A.\} and Michel Mayor and Giusi Micela and David Phillips and Giampaolo Piotto and Ken Rice and Dimitar Sasselov and Damien S{\'e}gransan and Chris Watson and Laura Affer and Bonomo, \{Aldo S.\} and Buchhave, \{Lars A.\} and Ciardi, \{David R.\} and Fiorenzano, \{Aldo F.\} and Avet Harutyunyan",

year = "2018",

month = apr,

day = "20",

doi = "10.3847/1538-3881/aab8f3",

language = "English",

volume = "155",

pages = "203",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "5",

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Haywood, RD, Vanderburg, A, Mortier, A, Giles, HAC, López-Morales, M, Lopez, ED, Malavolta, L, Charbonneau, D, Collier Cameron, A, Coughlin, JL, Dressing, CD, Nava, C, Latham, DW, Dumusque, X, Lovis, C, Molinari, E, Pepe, F, Sozzetti, A, Udry, S, Bouchy, F, Johnson, JA, Mayor, M, Micela, G, Phillips, D, Piotto, G, Rice, K, Sasselov, D, Ségransan, D, Watson, C, Affer, L, Bonomo, AS, Buchhave, LA, Ciardi, DR, Fiorenzano, AF & Harutyunyan, A 2018, 'An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope', Astronomical Journal, vol. 155, no. 5, pp. 203. https://doi.org/10.3847/1538-3881/aab8f3

TY - JOUR

T1 - An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope

AU - Haywood, Raphaëlle D.

AU - Vanderburg, Andrew

AU - Mortier, Annelies

AU - Giles, Helen A. C.

AU - López-Morales, Mercedes

AU - Lopez, Eric D.

AU - Malavolta, Luca

AU - Charbonneau, David

AU - Collier Cameron, Andrew

AU - Coughlin, Jeffrey L.

AU - Dressing, Courtney D.

AU - Nava, Chantanelle

AU - Latham, David W.

AU - Dumusque, Xavier

AU - Lovis, Christophe

AU - Molinari, Emilio

AU - Pepe, Francesco

AU - Sozzetti, Alessandro

AU - Udry, Stéphane

AU - Bouchy, François

AU - Johnson, John A.

AU - Mayor, Michel

AU - Micela, Giusi

AU - Phillips, David

AU - Piotto, Giampaolo

AU - Rice, Ken

AU - Sasselov, Dimitar

AU - Ségransan, Damien

AU - Watson, Chris

AU - Affer, Laura

AU - Bonomo, Aldo S.

AU - Buchhave, Lars A.

AU - Ciardi, David R.

AU - Fiorenzano, Aldo F.

AU - Harutyunyan, Avet

PY - 2018/4/20

Y1 - 2018/4/20

N2 - We present the confirmation of a small, moderately irradiated (F = 155 ± 7 F ⊕) 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 ⊕. 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{+/- }2.83.1 {M}\oplus 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.

AB - We present the confirmation of a small, moderately irradiated (F = 155 ± 7 F ⊕) 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 ⊕. 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{+/- }2.83.1 {M}\oplus 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.

KW - stars: individual: Kepler-1655

KW - KOI-280

KW - KIC 4141376

KW - 2MASS J19064546+3912428

KW - planets and satellites: detection

KW - planets and satellites: gaseous planets

U2 - 10.3847/1538-3881/aab8f3

DO - 10.3847/1538-3881/aab8f3

M3 - Article

SN - 0004-6256

VL - 155

SP - 203

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

ER -

An Accurate Mass Determination for Kepler-1655b, a Moderately Irradiated World with a Significant Volatile Envelope

Abstract

Keywords / Materials (for Non-textual outputs)

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