Three Small Planets Transiting a Hyades Star

John H. Livingston; Fei Dai; Teruyuki Hirano; Davide Gandolfi; Grzegorz Nowak; Michael Endl; Sergio Velasco; Akihiko Fukui; Norio Narita; Jorge Prieto-Arranz; Oscar Barragan; Felice Cusano; Simon Albrecht; Juan Cabrera; William D. Cochran; Szilard Csizmadia; Hans J. Deeg; Philipp Eigmüller; Anders Erikson; Malcolm Fridlund; Sascha Grziwa; Eike W. Guenther; Artie P. Hatzes; Kiyoe Kawauchi; Judith Korth; David Nespral; Enric Palle; Martin Pätzold; Carina M. Persson; Heike Rauer; Alexis M.S. Smith; Motohide Tamura; Yusuke Tanaka; Vincent Van Eylen; Noriharu Watanabe; Joshua N. Winn

doi:10.3847/1538-3881/aaa841

Three Small Planets Transiting a Hyades Star

John H. Livingston, Fei Dai, Teruyuki Hirano, Davide Gandolfi, Grzegorz Nowak, Michael Endl, Sergio Velasco, Akihiko Fukui, Norio Narita, Jorge Prieto-Arranz, Oscar Barragan, Felice Cusano, Simon Albrecht, Juan Cabrera, William D. Cochran, Szilard Csizmadia, Hans J. Deeg, Philipp Eigmüller, Anders Erikson, Malcolm FridlundSascha Grziwa, Eike W. Guenther, Artie P. Hatzes, Kiyoe Kawauchi, Judith Korth, David Nespral, Enric Palle, Martin Pätzold, Carina M. Persson, Heike Rauer, Alexis M.S. Smith, Motohide Tamura, Yusuke Tanaka, Vincent Van Eylen, Noriharu Watanabe, Joshua N. Winn

Astrophysical Sciences

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

40 Scopus citations

Abstract

We present the discovery of three small planets transiting K2-136 (LP 358 348, EPIC 247589423), a late K dwarf in the Hyades. The planets have orbital periods of 7.9757 ± 0.0011, 17.30681_-0.00036^+0.00034, and 25.5715_-0.0040^+0.0038 days, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and 1.55_-0.21^+0.24 R_⊕, respectively. With an age of 600-800 Myr, these planets are some of the smallest and youngest transiting planets known. Due to the relatively bright (J = 9.1) host star, the planets are compelling targets for future characterization via radial velocity mass measurements and transmission spectroscopy. As the first known star with multiple transiting planets in a cluster, the system should be helpful for testing theories of planet formation and migration.

Original language	English (US)
Article number	115
Journal	Astronomical Journal
Volume	155
Issue number	3
DOIs	https://doi.org/10.3847/1538-3881/aaa841
State	Published - Mar 2018

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planetary systems
planets and satellites: detection
stars: individual (LP 358-348)
techniques: photometric
techniques: spectroscopic

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10.3847/1538-3881/aaa841

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Livingston, J. H., Dai, F., Hirano, T., Gandolfi, D., Nowak, G., Endl, M., Velasco, S., Fukui, A., Narita, N., Prieto-Arranz, J., Barragan, O., Cusano, F., Albrecht, S., Cabrera, J., Cochran, W. D., Csizmadia, S., Deeg, H. J., Eigmüller, P., Erikson, A., ... Winn, J. N. (2018). Three Small Planets Transiting a Hyades Star. Astronomical Journal, 155(3), Article 115. https://doi.org/10.3847/1538-3881/aaa841

@article{a6b8e81f097b4092b767b097ac6c9558,

title = "Three Small Planets Transiting a Hyades Star",

abstract = "We present the discovery of three small planets transiting K2-136 (LP 358 348, EPIC 247589423), a late K dwarf in the Hyades. The planets have orbital periods of 7.9757 ± 0.0011, 17.30681-0.00036+0.00034, and 25.5715-0.0040+0.0038 days, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and 1.55-0.21+0.24 R⊕, respectively. With an age of 600-800 Myr, these planets are some of the smallest and youngest transiting planets known. Due to the relatively bright (J = 9.1) host star, the planets are compelling targets for future characterization via radial velocity mass measurements and transmission spectroscopy. As the first known star with multiple transiting planets in a cluster, the system should be helpful for testing theories of planet formation and migration.",

keywords = "planetary systems, planets and satellites: detection, stars: individual (LP 358-348), techniques: photometric, techniques: spectroscopic",

author = "Livingston, {John H.} and Fei Dai and Teruyuki Hirano and Davide Gandolfi and Grzegorz Nowak and Michael Endl and Sergio Velasco and Akihiko Fukui and Norio Narita and Jorge Prieto-Arranz and Oscar Barragan and Felice Cusano and Simon Albrecht and Juan Cabrera and Cochran, {William D.} and Szilard Csizmadia and Deeg, {Hans J.} and Philipp Eigm{\"u}ller and Anders Erikson and Malcolm Fridlund and Sascha Grziwa and Guenther, {Eike W.} and Hatzes, {Artie P.} and Kiyoe Kawauchi and Judith Korth and David Nespral and Enric Palle and Martin P{\"a}tzold and Persson, {Carina M.} and Heike Rauer and Smith, {Alexis M.S.} and Motohide Tamura and Yusuke Tanaka and {Van Eylen}, Vincent and Noriharu Watanabe and Winn, {Joshua N.}",

year = "2018",

month = mar,

doi = "10.3847/1538-3881/aaa841",

language = "English (US)",

volume = "155",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "IOP Publishing Ltd.",

number = "3",

}

Livingston, JH, Dai, F, Hirano, T, Gandolfi, D, Nowak, G, Endl, M, Velasco, S, Fukui, A, Narita, N, Prieto-Arranz, J, Barragan, O, Cusano, F, Albrecht, S, Cabrera, J, Cochran, WD, Csizmadia, S, Deeg, HJ, Eigmüller, P, Erikson, A, Fridlund, M, Grziwa, S, Guenther, EW, Hatzes, AP, Kawauchi, K, Korth, J, Nespral, D, Palle, E, Pätzold, M, Persson, CM, Rauer, H, Smith, AMS, Tamura, M, Tanaka, Y, Van Eylen, V, Watanabe, N & Winn, JN 2018, 'Three Small Planets Transiting a Hyades Star', Astronomical Journal, vol. 155, no. 3, 115. https://doi.org/10.3847/1538-3881/aaa841

TY - JOUR

T1 - Three Small Planets Transiting a Hyades Star

AU - Livingston, John H.

AU - Dai, Fei

AU - Hirano, Teruyuki

AU - Gandolfi, Davide

AU - Nowak, Grzegorz

AU - Endl, Michael

AU - Velasco, Sergio

AU - Fukui, Akihiko

AU - Narita, Norio

AU - Prieto-Arranz, Jorge

AU - Barragan, Oscar

AU - Cusano, Felice

AU - Albrecht, Simon

AU - Cabrera, Juan

AU - Cochran, William D.

AU - Csizmadia, Szilard

AU - Deeg, Hans J.

AU - Eigmüller, Philipp

AU - Erikson, Anders

AU - Fridlund, Malcolm

AU - Grziwa, Sascha

AU - Guenther, Eike W.

AU - Hatzes, Artie P.

AU - Kawauchi, Kiyoe

AU - Korth, Judith

AU - Nespral, David

AU - Palle, Enric

AU - Pätzold, Martin

AU - Persson, Carina M.

AU - Rauer, Heike

AU - Smith, Alexis M.S.

AU - Tamura, Motohide

AU - Tanaka, Yusuke

AU - Van Eylen, Vincent

AU - Watanabe, Noriharu

AU - Winn, Joshua N.

PY - 2018/3

Y1 - 2018/3

N2 - We present the discovery of three small planets transiting K2-136 (LP 358 348, EPIC 247589423), a late K dwarf in the Hyades. The planets have orbital periods of 7.9757 ± 0.0011, 17.30681-0.00036+0.00034, and 25.5715-0.0040+0.0038 days, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and 1.55-0.21+0.24 R⊕, respectively. With an age of 600-800 Myr, these planets are some of the smallest and youngest transiting planets known. Due to the relatively bright (J = 9.1) host star, the planets are compelling targets for future characterization via radial velocity mass measurements and transmission spectroscopy. As the first known star with multiple transiting planets in a cluster, the system should be helpful for testing theories of planet formation and migration.

AB - We present the discovery of three small planets transiting K2-136 (LP 358 348, EPIC 247589423), a late K dwarf in the Hyades. The planets have orbital periods of 7.9757 ± 0.0011, 17.30681-0.00036+0.00034, and 25.5715-0.0040+0.0038 days, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and 1.55-0.21+0.24 R⊕, respectively. With an age of 600-800 Myr, these planets are some of the smallest and youngest transiting planets known. Due to the relatively bright (J = 9.1) host star, the planets are compelling targets for future characterization via radial velocity mass measurements and transmission spectroscopy. As the first known star with multiple transiting planets in a cluster, the system should be helpful for testing theories of planet formation and migration.

KW - planetary systems

KW - planets and satellites: detection

KW - stars: individual (LP 358-348)

KW - techniques: photometric

KW - techniques: spectroscopic

UR - http://www.scopus.com/inward/record.url?scp=85043498994&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85043498994&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/aaa841

DO - 10.3847/1538-3881/aaa841

M3 - Article

AN - SCOPUS:85043498994

SN - 0004-6256

VL - 155

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

M1 - 115

ER -

Three Small Planets Transiting a Hyades Star

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All Science Journal Classification (ASJC) codes

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