The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion

Sara Gettel; David Charbonneau; Courtney D. Dressing; Lars A. Buchhave; Xavier Dumusque; Andrew Vanderburg; Aldo S. Bonomo; Luca Malavolta; Francesco Pepe; Andrew Collier Cameron; David W. Latham; Stéphane Udry; Geoffrey W. Marcy; Howard Isaacson; Andrew W. Howard; Guy R. Davies; Victor Silva Aguirre; Hans Kjeldsen; Timothy R. Bedding; Eric Lopez; Laura Affer; Rosario Cosentino; Pedro Figueira; Aldo F. M. Fiorenzano; Avet Harutyunyan; John Asher Johnson; Mercedes Lopez-Morales; Christophe Lovis; Michel Mayor; Giusi Micela; Emilio Molinari; Fatemeh Motalebi; David F. Phillips; Giampaolo Piotto; Didier Queloz; Ken Rice; Dimitar Sasselov; Damien Ségransan; Alessandro Sozzetti; Chris Watson; Sarbani Basu; Tiago L. Campante; Jørgen Christensen-Dalsgaard; Steven D. Kawaler; Travis S. Metcalfe; Rasmus Handberg; Mikkel N. Lund; Mia S. Lundkvist; Daniel Huber; William J. Chaplin

doi:10.3847/0004-637X/816/2/95

The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion

Sara Gettel, David Charbonneau, Courtney D. Dressing, Lars A. Buchhave, Xavier Dumusque, Andrew Vanderburg, Aldo S. Bonomo, Luca Malavolta, Francesco Pepe, Andrew Collier Cameron, David W. Latham, Stéphane Udry, Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard, Guy R. Davies, Victor Silva Aguirre, Hans Kjeldsen, Timothy R. Bedding, Eric LopezLaura Affer, Rosario Cosentino, Pedro Figueira, Aldo F. M. Fiorenzano, Avet Harutyunyan, John Asher Johnson, Mercedes Lopez-Morales, Christophe Lovis, Michel Mayor, Giusi Micela, Emilio Molinari, Fatemeh Motalebi, David F. Phillips, Giampaolo Piotto, Didier Queloz, Ken Rice, Dimitar Sasselov, Damien Ségransan, Alessandro Sozzetti, Chris Watson, Sarbani Basu, Tiago L. Campante, Jørgen Christensen-Dalsgaard, Steven D. Kawaler, Travis S. Metcalfe, Rasmus Handberg, Mikkel N. Lund, Mia S. Lundkvist, Daniel Huber, William J. Chaplin

School of Physics and Astronomy

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

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-1. 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}-0.03+0.04{M}⊙ , the radius to be 1.066 ± 0.012 R⊙, and the age to be {5.25}-1.39+1.41 Gyr. We estimate the radius of the 10.6 day planet as 2.37 ± 0.13 R⊕. 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⊕. We also detect two additional non-transiting companions, a planet with a minimum mass of 4.46 ± 0.12 MJ in a nearly circular 524 day orbit and a massive companion with a period >10 years and mass >12.1 MJ. The 12 exoplanets with radii

Original language	English
Pages (from-to)	95
Journal	Astrophysical Journal
Volume	816
Issue number	2
DOIs	https://doi.org/10.3847/0004-637X/816/2/95
Publication status	Published - 1 Jan 2016

Keywords / Materials (for Non-textual outputs)

planetary systems
planets and satellites: composition
stars: individual: KOI-273 & KIC 3102384
asteroseismology
techniques: radial velocities

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10.3847/0004-637X/816/2/95

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Gettel, S., Charbonneau, D., Dressing, C. D., Buchhave, L. A., Dumusque, X., Vanderburg, A., Bonomo, A. S., Malavolta, L., Pepe, F., Collier Cameron, A., Latham, D. W., Udry, S., Marcy, G. W., Isaacson, H., Howard, A. W., Davies, G. R., Silva Aguirre, V., Kjeldsen, H., Bedding, T. R., ... Chaplin, W. J. (2016). The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion. Astrophysical Journal, 816(2), 95. https://doi.org/10.3847/0004-637X/816/2/95

@article{2e69897a0a194132b60697e2db497308,

title = "The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion",

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-1. 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}-0.03+0.04{M}⊙ , the radius to be 1.066 ± 0.012 R⊙, and the age to be {5.25}-1.39+1.41 Gyr. We estimate the radius of the 10.6 day planet as 2.37 ± 0.13 R⊕. 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⊕. We also detect two additional non-transiting companions, a planet with a minimum mass of 4.46 ± 0.12 MJ in a nearly circular 524 day orbit and a massive companion with a period >10 years and mass >12.1 MJ. The 12 exoplanets with radii ",

keywords = "planetary systems, planets and satellites: composition, stars: individual: KOI-273 & KIC 3102384, asteroseismology, techniques: radial velocities",

author = "Sara Gettel and David Charbonneau and Dressing, {Courtney D.} and Buchhave, {Lars A.} and Xavier Dumusque and Andrew Vanderburg and Bonomo, {Aldo S.} and Luca Malavolta and Francesco Pepe and {Collier Cameron}, Andrew and Latham, {David W.} and St{\'e}phane Udry and Marcy, {Geoffrey W.} and Howard Isaacson and Howard, {Andrew W.} and Davies, {Guy R.} and {Silva Aguirre}, Victor and Hans Kjeldsen and Bedding, {Timothy R.} and Eric Lopez and Laura Affer and Rosario Cosentino and Pedro Figueira and Fiorenzano, {Aldo F. M.} and Avet Harutyunyan and Johnson, {John Asher} and Mercedes Lopez-Morales and Christophe Lovis and Michel Mayor and Giusi Micela and Emilio Molinari and Fatemeh Motalebi and Phillips, {David F.} and Giampaolo Piotto and Didier Queloz and Ken Rice and Dimitar Sasselov and Damien S{\'e}gransan and Alessandro Sozzetti and Chris Watson and Sarbani Basu and Campante, {Tiago L.} and J{\o}rgen Christensen-Dalsgaard and Kawaler, {Steven D.} and Metcalfe, {Travis S.} and Rasmus Handberg and Lund, {Mikkel N.} and Lundkvist, {Mia S.} and Daniel Huber and Chaplin, {William J.}",

year = "2016",

month = jan,

day = "1",

doi = "10.3847/0004-637X/816/2/95",

language = "English",

volume = "816",

pages = "95",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

number = "2",

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Gettel, S, Charbonneau, D, Dressing, CD, Buchhave, LA, Dumusque, X, Vanderburg, A, Bonomo, AS, Malavolta, L, Pepe, F, Collier Cameron, A, Latham, DW, Udry, S, Marcy, GW, Isaacson, H, Howard, AW, Davies, GR, Silva Aguirre, V, Kjeldsen, H, Bedding, TR, Lopez, E, Affer, L, Cosentino, R, Figueira, P, Fiorenzano, AFM, Harutyunyan, A, Johnson, JA, Lopez-Morales, M, Lovis, C, Mayor, M, Micela, G, Molinari, E, Motalebi, F, Phillips, DF, Piotto, G, Queloz, D, Rice, K, Sasselov, D, Ségransan, D, Sozzetti, A, Watson, C, Basu, S, Campante, TL, Christensen-Dalsgaard, J, Kawaler, SD, Metcalfe, TS, Handberg, R, Lund, MN, Lundkvist, MS, Huber, D & Chaplin, WJ 2016, 'The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion', Astrophysical Journal, vol. 816, no. 2, pp. 95. https://doi.org/10.3847/0004-637X/816/2/95

TY - JOUR

T1 - The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion

AU - Gettel, Sara

AU - Charbonneau, David

AU - Dressing, Courtney D.

AU - Buchhave, Lars A.

AU - Dumusque, Xavier

AU - Vanderburg, Andrew

AU - Bonomo, Aldo S.

AU - Malavolta, Luca

AU - Pepe, Francesco

AU - Collier Cameron, Andrew

AU - Latham, David W.

AU - Udry, Stéphane

AU - Marcy, Geoffrey W.

AU - Isaacson, Howard

AU - Howard, Andrew W.

AU - Davies, Guy R.

AU - Silva Aguirre, Victor

AU - Kjeldsen, Hans

AU - Bedding, Timothy R.

AU - Lopez, Eric

AU - Affer, Laura

AU - Cosentino, Rosario

AU - Figueira, Pedro

AU - Fiorenzano, Aldo F. M.

AU - Harutyunyan, Avet

AU - Johnson, John Asher

AU - Lopez-Morales, Mercedes

AU - Lovis, Christophe

AU - Mayor, Michel

AU - Micela, Giusi

AU - Molinari, Emilio

AU - Motalebi, Fatemeh

AU - Phillips, David F.

AU - Piotto, Giampaolo

AU - Queloz, Didier

AU - Rice, Ken

AU - Sasselov, Dimitar

AU - Ségransan, Damien

AU - Sozzetti, Alessandro

AU - Watson, Chris

AU - Basu, Sarbani

AU - Campante, Tiago L.

AU - Christensen-Dalsgaard, Jørgen

AU - Kawaler, Steven D.

AU - Metcalfe, Travis S.

AU - Handberg, Rasmus

AU - Lund, Mikkel N.

AU - Lundkvist, Mia S.

AU - Huber, Daniel

AU - Chaplin, William J.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - 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-1. 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}-0.03+0.04{M}⊙ , the radius to be 1.066 ± 0.012 R⊙, and the age to be {5.25}-1.39+1.41 Gyr. We estimate the radius of the 10.6 day planet as 2.37 ± 0.13 R⊕. 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⊕. We also detect two additional non-transiting companions, a planet with a minimum mass of 4.46 ± 0.12 MJ in a nearly circular 524 day orbit and a massive companion with a period >10 years and mass >12.1 MJ. The 12 exoplanets with radii

AB - 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-1. 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}-0.03+0.04{M}⊙ , the radius to be 1.066 ± 0.012 R⊙, and the age to be {5.25}-1.39+1.41 Gyr. We estimate the radius of the 10.6 day planet as 2.37 ± 0.13 R⊕. 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⊕. We also detect two additional non-transiting companions, a planet with a minimum mass of 4.46 ± 0.12 MJ in a nearly circular 524 day orbit and a massive companion with a period >10 years and mass >12.1 MJ. The 12 exoplanets with radii

KW - planetary systems

KW - planets and satellites: composition

KW - stars: individual: KOI-273 & KIC 3102384

KW - asteroseismology

KW - techniques: radial velocities

U2 - 10.3847/0004-637X/816/2/95

DO - 10.3847/0004-637X/816/2/95

M3 - Article

SN - 0004-637X

VL - 816

SP - 95

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion

Abstract

Keywords / Materials (for Non-textual outputs)

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