Home > Research > Publications & Outputs > The K2-138 system

Research

Associated organisational unit

Electronic data

  • 1801.03874

    Accepted author manuscript, 3.77 MB, PDF document

Links

Text available via DOI:

View graph of relations

The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists. / Christiansen, Jessie L.; Crossfield, Ian J. M.; Barentsen, Geert et al.
In: The Astronomical Journal, Vol. 155, No. 2, 57, 01.02.2018.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Christiansen, JL, Crossfield, IJM, Barentsen, G, Lintott, CJ, Barclay, T, Simmons, BD, Petigura, E, Schlieder, JE, Dressing, CD, Vanderburg, A, Allen, C, Mcmaster, A, Miller, G, Veldthuis, M, Allen, S, Wolfenbarger, Z, Cox, B, Zemiro, J, Howard, AW, Livingston, J, Sinukoff, E, Catron, T, Grey, A, Kusch, JJE, Terentev, I, Vales, M & Kristiansen, MH 2018, 'The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists', The Astronomical Journal, vol. 155, no. 2, 57. https://doi.org/10.3847/1538-3881/aa9be0

APA

Christiansen, J. L., Crossfield, I. J. M., Barentsen, G., Lintott, C. J., Barclay, T., Simmons, B. . D., Petigura, E., Schlieder, J. E., Dressing, C. D., Vanderburg, A., Allen, C., Mcmaster, A., Miller, G., Veldthuis, M., Allen, S., Wolfenbarger, Z., Cox, B., Zemiro, J., Howard, A. W., ... Kristiansen, M. H. (2018). The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists. The Astronomical Journal, 155(2), Article 57. https://doi.org/10.3847/1538-3881/aa9be0

Vancouver

Christiansen JL, Crossfield IJM, Barentsen G, Lintott CJ, Barclay T, Simmons BD et al. The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists. The Astronomical Journal. 2018 Feb 1;155(2):57. doi: 10.3847/1538-3881/aa9be0

Author

Christiansen, Jessie L. ; Crossfield, Ian J. M. ; Barentsen, Geert et al. / The K2-138 system : a near-resonant chain of five sub-neptune planets discovered by citizen scientists. In: The Astronomical Journal. 2018 ; Vol. 155, No. 2.

Bibtex

@article{ea38c47102f9467d9a5315a4a0f3f660,
title = "The K2-138 system: a near-resonant chain of five sub-neptune planets discovered by citizen scientists",
abstract = "K2-138 is a moderately bright (V = 12.2, K = 10.3) main-sequence K star observed in Campaign 12 of the NASA K2 mission. It hosts five small (1.6–3.3 ${R}_{\oplus }$) transiting planets in a compact architecture. The periods of the five planets are 2.35, 3.56, 5.40, 8.26, and 12.76 days, forming an unbroken chain of near 3:2 resonances. Although we do not detect the predicted 2–5 minute transit timing variations (TTVs) with the K2 timing precision, they may be observable by higher-cadence observations with, for example, Spitzer or CHEOPS. The planets are amenable to mass measurement by precision radial velocity measurements, and therefore K2-138 could represent a new benchmark system for comparing radial velocity and TTV masses. K2-138 is the first exoplanet discovery by citizen scientists participating in the Exoplanet Explorers project on the Zooniverse platform.",
author = "Christiansen, {Jessie L.} and Crossfield, {Ian J. M.} and Geert Barentsen and Lintott, {Chris J.} and Thomas Barclay and Simmons, {Brooke . D.} and Erik Petigura and Schlieder, {Joshua E.} and Dressing, {Courtney D.} and Andrew Vanderburg and Campbell Allen and Adam Mcmaster and Grant Miller and Martin Veldthuis and Sarah Allen and Zach Wolfenbarger and Brian Cox and Julia Zemiro and Howard, {Andrew W.} and John Livingston and Evan Sinukoff and Timothy Catron and Andrew Grey and Kusch, {Joshua J. E.} and Ivan Terentev and Martin Vales and Kristiansen, {Martti H.}",
note = "This is an author-created, un-copyedited version of an article accepted for publication/published in The Astronomical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it ",
year = "2018",
month = feb,
day = "1",
doi = "10.3847/1538-3881/aa9be0",
language = "English",
volume = "155",
journal = "The Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS

TY - JOUR

T1 - The K2-138 system

T2 - a near-resonant chain of five sub-neptune planets discovered by citizen scientists

AU - Christiansen, Jessie L.

AU - Crossfield, Ian J. M.

AU - Barentsen, Geert

AU - Lintott, Chris J.

AU - Barclay, Thomas

AU - Simmons, Brooke . D.

AU - Petigura, Erik

AU - Schlieder, Joshua E.

AU - Dressing, Courtney D.

AU - Vanderburg, Andrew

AU - Allen, Campbell

AU - Mcmaster, Adam

AU - Miller, Grant

AU - Veldthuis, Martin

AU - Allen, Sarah

AU - Wolfenbarger, Zach

AU - Cox, Brian

AU - Zemiro, Julia

AU - Howard, Andrew W.

AU - Livingston, John

AU - Sinukoff, Evan

AU - Catron, Timothy

AU - Grey, Andrew

AU - Kusch, Joshua J. E.

AU - Terentev, Ivan

AU - Vales, Martin

AU - Kristiansen, Martti H.

N1 - This is an author-created, un-copyedited version of an article accepted for publication/published in The Astronomical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it

PY - 2018/2/1

Y1 - 2018/2/1

N2 - K2-138 is a moderately bright (V = 12.2, K = 10.3) main-sequence K star observed in Campaign 12 of the NASA K2 mission. It hosts five small (1.6–3.3 ${R}_{\oplus }$) transiting planets in a compact architecture. The periods of the five planets are 2.35, 3.56, 5.40, 8.26, and 12.76 days, forming an unbroken chain of near 3:2 resonances. Although we do not detect the predicted 2–5 minute transit timing variations (TTVs) with the K2 timing precision, they may be observable by higher-cadence observations with, for example, Spitzer or CHEOPS. The planets are amenable to mass measurement by precision radial velocity measurements, and therefore K2-138 could represent a new benchmark system for comparing radial velocity and TTV masses. K2-138 is the first exoplanet discovery by citizen scientists participating in the Exoplanet Explorers project on the Zooniverse platform.

AB - K2-138 is a moderately bright (V = 12.2, K = 10.3) main-sequence K star observed in Campaign 12 of the NASA K2 mission. It hosts five small (1.6–3.3 ${R}_{\oplus }$) transiting planets in a compact architecture. The periods of the five planets are 2.35, 3.56, 5.40, 8.26, and 12.76 days, forming an unbroken chain of near 3:2 resonances. Although we do not detect the predicted 2–5 minute transit timing variations (TTVs) with the K2 timing precision, they may be observable by higher-cadence observations with, for example, Spitzer or CHEOPS. The planets are amenable to mass measurement by precision radial velocity measurements, and therefore K2-138 could represent a new benchmark system for comparing radial velocity and TTV masses. K2-138 is the first exoplanet discovery by citizen scientists participating in the Exoplanet Explorers project on the Zooniverse platform.

U2 - 10.3847/1538-3881/aa9be0

DO - 10.3847/1538-3881/aa9be0

M3 - Journal article

VL - 155

JO - The Astronomical Journal

JF - The Astronomical Journal

SN - 0004-6256

IS - 2

M1 - 57

ER -