An accurate mass determination for Kepler-1655b, a moderately-irradiated world with a significant volatile envelope

Raphaelle D. Haywood; Andrew Vanderburg; Annelies Mortier; Helen A. C. Giles; Mercedes Lopez-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; Stephane Udry; Francois Bouchy; John A. Johnson; Michel Mayor; Giusi Micela; David Phillips; Giampaolo Piotto; Ken Rice; Dimitar Sasselov; Damien Segransan; 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

Raphaelle D. Haywood^*
, Andrew Vanderburg
, Annelies Mortier
, Helen A. C. Giles
, Mercedes Lopez-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
, Stephane Udry
, Francois Bouchy

John A. Johnson, Michel Mayor, Giusi Micela, David Phillips, Giampaolo Piotto, Ken Rice, Dimitar Sasselov, Damien Segransan, Chris Watson, Laura Affer, Aldo S. Bonomo, Lars A. Buchhave, David R. Ciardi, Aldo F. Fiorenzano, Avet Harutyunyan

^*Corresponding author for this work

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 TNG/HARPS-N, enabling us to characterize the host star and determine an accurate mass for Kepler-1655b of 5.0±^3.1_2.8 M⊕ 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
Article number	203
Number of pages	19
Journal	Astronomical Journal
Volume	155
Issue number	5
Early online date	20 Apr 2018
DOIs	https://doi.org/10.3847/1538-3881/aab8f3
Publication status	Published - May 2018

Keywords

Planets and satellites: detection
Planets and satellites: gaseous planets

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© 2018, American Astronomical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at http://iopscience.iop.org/journal/1538-3881
Accepted author manuscript, 3.05 MB

http://adsabs.harvard.edu/abs/2018arXiv180308820H

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Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018
Jardine, M. (PI), Cameron, A. (CoI), Cyganowski, C. (CoI), Horne, K. (CoI) & Wood, K. (CoI)
Science & Technology Facilities Council
1/04/15 → 31/03/18
Project: Standard
EU FP7 Space ETAEARTH: ETAEARTH
Cameron, A. (PI)
Joint Research Centre European Commission
1/01/13 → 31/12/17
Project: Standard

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Haywood, R. D., Vanderburg, A., Mortier, A., Giles, H. A. C., Lopez-Morales, M., Lopez, E. D., Malavolta, L., Charbonneau, D., Cameron, A. C., 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), Article 203. https://doi.org/10.3847/1538-3881/aab8f3

@article{3e9f9795e3fb413e978dd43cadf6a52a,

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 TNG/HARPS-N, enabling us to characterize the host star and determine an accurate mass for Kepler-1655b of 5.0±\textasciicircum{}3.1\_2.8 M⊕ 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 = "Planets and satellites: detection, Planets and satellites: gaseous planets",

author = "Haywood, \{Raphaelle D.\} and Andrew Vanderburg and Annelies Mortier and Giles, \{Helen A. C.\} and Mercedes Lopez-Morales and Lopez, \{Eric D.\} and Luca Malavolta and David Charbonneau and Cameron, \{Andrew Collier\} 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 Stephane Udry and Francois 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 Segransan 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",

note = "Funding: A.C.C. acknowledges support from STFC consolidated grant number ST/M001296/1. The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant Agreement No. 313014 (ETAEARTH).",

year = "2018",

month = may,

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

language = "English",

volume = "155",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "5",

}

Haywood, RD, Vanderburg, A, Mortier, A, Giles, HAC, Lopez-Morales, M, Lopez, ED, Malavolta, L, Charbonneau, D, Cameron, AC, 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, Segransan, 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, 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, Raphaelle D.

AU - Vanderburg, Andrew

AU - Mortier, Annelies

AU - Giles, Helen A. C.

AU - Lopez-Morales, Mercedes

AU - Lopez, Eric D.

AU - Malavolta, Luca

AU - Charbonneau, David

AU - Cameron, Andrew Collier

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, Stephane

AU - Bouchy, Francois

AU - Johnson, John A.

AU - Mayor, Michel

AU - Micela, Giusi

AU - Phillips, David

AU - Piotto, Giampaolo

AU - Rice, Ken

AU - Sasselov, Dimitar

AU - Segransan, 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

N1 - Funding: A.C.C. acknowledges support from STFC consolidated grant number ST/M001296/1. The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant Agreement No. 313014 (ETAEARTH).

PY - 2018/5

Y1 - 2018/5

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 TNG/HARPS-N, enabling us to characterize the host star and determine an accurate mass for Kepler-1655b of 5.0±^3.1_2.8 M⊕ 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 TNG/HARPS-N, enabling us to characterize the host star and determine an accurate mass for Kepler-1655b of 5.0±^3.1_2.8 M⊕ 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 - 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

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

M1 - 203

ER -

An accurate mass determination for Kepler-1655b, a moderately-irradiated world with a significant volatile envelope

Abstract

Keywords

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Projects

Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018

EU FP7 Space ETAEARTH: ETAEARTH

Cite this