It Takes Two Planets in Resonance to Tango around K2-146

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It Takes Two Planets in Resonance to Tango around K2-146. / Lam, Kristine W.F.; Korth, Judith; Masuda, Kento; Csizmadia, Szilárd; Eigmüller, Philipp; Stefánsson, Gumundur Kári; Endl, Michael; Albrecht, Simon; Robertson, Paul; Luque, Rafael; Livingston, John H.; Hirano, Teruyuki; Sobrino, Roi Alonso; Barragán, Oscar; Cabrera, Juan; Carleo, Ilaria; Chaushev, Alexander; Cochran, William D.; Dai, Fei; Leon, Jerome de; Deeg, Hans J.; Erikson, Anders; Esposito, Massimiliano; Fridlund, Malcolm; Fukui, Akihiko; Gandolfi, Davide; Georgieva, Iskra; Cuesta, Lucá Gonzalez; Grziwa, Sascha; Guenther, Eike W.; Hatzes, Artie P.; Hidalgo, Diego; Hjorth, Maria; Kabath, Petr; Knudstrup, Emil; Lund, Mikkel N.; Mahadevan, Suvrath; Mathur, Savita; Rodríguez, Pilar Montañes; Murgas, Felipe; Narita, Norio; Nespral, David; Niraula, Prajwal; Palle, Enric; P tzold, Martin; Persson, Carina M.; Prieto-Arranz, Jorge; Rauer, Heike; Redfield, Seth; Ribas, Ignasi; Skarka, Marek; Smith, Alexis M.S.; Subjak, Jan; Eylen, Vincent Van.

I: Astronomical Journal, Bind 159, Nr. 3, 120, 2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Lam, KWF, Korth, J, Masuda, K, Csizmadia, S, Eigmüller, P, Stefánsson, GK, Endl, M, Albrecht, S, Robertson, P, Luque, R, Livingston, JH, Hirano, T, Sobrino, RA, Barragán, O, Cabrera, J, Carleo, I, Chaushev, A, Cochran, WD, Dai, F, Leon, JD, Deeg, HJ, Erikson, A, Esposito, M, Fridlund, M, Fukui, A, Gandolfi, D, Georgieva, I, Cuesta, LG, Grziwa, S, Guenther, EW, Hatzes, AP, Hidalgo, D, Hjorth, M, Kabath, P, Knudstrup, E, Lund, MN, Mahadevan, S, Mathur, S, Rodríguez, PM, Murgas, F, Narita, N, Nespral, D, Niraula, P, Palle, E, P tzold, M, Persson, CM, Prieto-Arranz, J, Rauer, H, Redfield, S, Ribas, I, Skarka, M, Smith, AMS, Subjak, J & Eylen, VV 2020, 'It Takes Two Planets in Resonance to Tango around K2-146', Astronomical Journal, bind 159, nr. 3, 120. https://doi.org/10.3847/1538-3881/ab66c9

APA

Lam, K. W. F., Korth, J., Masuda, K., Csizmadia, S., Eigmüller, P., Stefánsson, G. K., Endl, M., Albrecht, S., Robertson, P., Luque, R., Livingston, J. H., Hirano, T., Sobrino, R. A., Barragán, O., Cabrera, J., Carleo, I., Chaushev, A., Cochran, W. D., Dai, F., ... Eylen, V. V. (2020). It Takes Two Planets in Resonance to Tango around K2-146. Astronomical Journal, 159(3), [120]. https://doi.org/10.3847/1538-3881/ab66c9

CBE

Lam KWF, Korth J, Masuda K, Csizmadia S, Eigmüller P, Stefánsson GK, Endl M, Albrecht S, Robertson P, Luque R, Livingston JH, Hirano T, Sobrino RA, Barragán O, Cabrera J, Carleo I, Chaushev A, Cochran WD, Dai F, Leon JD, Deeg HJ, Erikson A, Esposito M, Fridlund M, Fukui A, Gandolfi D, Georgieva I, Cuesta LG, Grziwa S, Guenther EW, Hatzes AP, Hidalgo D, Hjorth M, Kabath P, Knudstrup E, Lund MN, Mahadevan S, Mathur S, Rodríguez PM, Murgas F, Narita N, Nespral D, Niraula P, Palle E, P tzold M, Persson CM, Prieto-Arranz J, Rauer H, Redfield S, Ribas I, Skarka M, Smith AMS, Subjak J, Eylen VV. 2020. It Takes Two Planets in Resonance to Tango around K2-146. Astronomical Journal. 159(3):Article 120. https://doi.org/10.3847/1538-3881/ab66c9

MLA

Vancouver

Lam KWF, Korth J, Masuda K, Csizmadia S, Eigmüller P, Stefánsson GK o.a. It Takes Two Planets in Resonance to Tango around K2-146. Astronomical Journal. 2020;159(3). 120. https://doi.org/10.3847/1538-3881/ab66c9

Author

Lam, Kristine W.F. ; Korth, Judith ; Masuda, Kento ; Csizmadia, Szilárd ; Eigmüller, Philipp ; Stefánsson, Gumundur Kári ; Endl, Michael ; Albrecht, Simon ; Robertson, Paul ; Luque, Rafael ; Livingston, John H. ; Hirano, Teruyuki ; Sobrino, Roi Alonso ; Barragán, Oscar ; Cabrera, Juan ; Carleo, Ilaria ; Chaushev, Alexander ; Cochran, William D. ; Dai, Fei ; Leon, Jerome de ; Deeg, Hans J. ; Erikson, Anders ; Esposito, Massimiliano ; Fridlund, Malcolm ; Fukui, Akihiko ; Gandolfi, Davide ; Georgieva, Iskra ; Cuesta, Lucá Gonzalez ; Grziwa, Sascha ; Guenther, Eike W. ; Hatzes, Artie P. ; Hidalgo, Diego ; Hjorth, Maria ; Kabath, Petr ; Knudstrup, Emil ; Lund, Mikkel N. ; Mahadevan, Suvrath ; Mathur, Savita ; Rodríguez, Pilar Montañes ; Murgas, Felipe ; Narita, Norio ; Nespral, David ; Niraula, Prajwal ; Palle, Enric ; P tzold, Martin ; Persson, Carina M. ; Prieto-Arranz, Jorge ; Rauer, Heike ; Redfield, Seth ; Ribas, Ignasi ; Skarka, Marek ; Smith, Alexis M.S. ; Subjak, Jan ; Eylen, Vincent Van. / It Takes Two Planets in Resonance to Tango around K2-146. I: Astronomical Journal. 2020 ; Bind 159, Nr. 3.

Bibtex

@article{711d73c22dbd49bda861813593b410b6,
title = "It Takes Two Planets in Resonance to Tango around K2-146",
abstract = "K2-146 is a cool, 0.358M⊙ dwarf that was found to host a mini-Neptune with a 2.67 day period. The planet exhibited strong transit timing variations (TTVs) of greater than 30 minutes, indicative of the presence of an additional object in the system. Here we report the discovery of the previously undetected outer planet in the system, K2-146 c, using additional photometric data. K2-146 c was found to have a grazing transit geometry and a 3.97 day period. The outer planet was only significantly detected in the latter K2 campaigns presumably because of precession of its orbital plane. The TTVs of K2-146 b and c were measured using observations spanning a baseline of almost 1200 days. We found strong anti-correlation in the TTVs, suggesting the two planets are gravitationally interacting. Our TTV and transit model analyses revealed that K2-146 b has a radius of 2.25 ± 0.10 R⊕ and a mass of 5.6 ± 0.7 M⊕, whereas K2-146 c has a radius of 2.59-0.39+1.81 R⊕ and a mass of 7.1 ± 0.9 M⊕. The inner and outer planets likely have moderate eccentricities of e = 0.14 ± 0.07 and 0.16 ± 0.07, respectively. Long-term numerical integrations of the two-planet orbital solution show that it can be dynamically stable for at least 2 Myr. We show that the resonance angles of the planet pair are librating, which may be an indication that K2-146 b and c are in a 3:2 mean motion resonance. The orbital architecture of the system points to a possible convergent migration origin.",
author = "Lam, {Kristine W.F.} and Judith Korth and Kento Masuda and Szil{\'a}rd Csizmadia and Philipp Eigm{\"u}ller and Stef{\'a}nsson, {Gumundur K{\'a}ri} and Michael Endl and Simon Albrecht and Paul Robertson and Rafael Luque and Livingston, {John H.} and Teruyuki Hirano and Sobrino, {Roi Alonso} and Oscar Barrag{\'a}n and Juan Cabrera and Ilaria Carleo and Alexander Chaushev and Cochran, {William D.} and Fei Dai and Leon, {Jerome de} and Deeg, {Hans J.} and Anders Erikson and Massimiliano Esposito and Malcolm Fridlund and Akihiko Fukui and Davide Gandolfi and Iskra Georgieva and Cuesta, {Luc{\'a} Gonzalez} and Sascha Grziwa and Guenther, {Eike W.} and Hatzes, {Artie P.} and Diego Hidalgo and Maria Hjorth and Petr Kabath and Emil Knudstrup and Lund, {Mikkel N.} and Suvrath Mahadevan and Savita Mathur and Rodr{\'i}guez, {Pilar Montañes} and Felipe Murgas and Norio Narita and David Nespral and Prajwal Niraula and Enric Palle and {P tzold}, Martin and Persson, {Carina M.} and Jorge Prieto-Arranz and Heike Rauer and Seth Redfield and Ignasi Ribas and Marek Skarka and Smith, {Alexis M.S.} and Jan Subjak and Eylen, {Vincent Van}",
year = "2020",
doi = "10.3847/1538-3881/ab66c9",
language = "English",
volume = "159",
journal = "The Astronomical Journal",
issn = "0004-6256",
publisher = "Institute of Physics Publishing, Inc",
number = "3",

}

RIS

TY - JOUR

T1 - It Takes Two Planets in Resonance to Tango around K2-146

AU - Lam, Kristine W.F.

AU - Korth, Judith

AU - Masuda, Kento

AU - Csizmadia, Szilárd

AU - Eigmüller, Philipp

AU - Stefánsson, Gumundur Kári

AU - Endl, Michael

AU - Albrecht, Simon

AU - Robertson, Paul

AU - Luque, Rafael

AU - Livingston, John H.

AU - Hirano, Teruyuki

AU - Sobrino, Roi Alonso

AU - Barragán, Oscar

AU - Cabrera, Juan

AU - Carleo, Ilaria

AU - Chaushev, Alexander

AU - Cochran, William D.

AU - Dai, Fei

AU - Leon, Jerome de

AU - Deeg, Hans J.

AU - Erikson, Anders

AU - Esposito, Massimiliano

AU - Fridlund, Malcolm

AU - Fukui, Akihiko

AU - Gandolfi, Davide

AU - Georgieva, Iskra

AU - Cuesta, Lucá Gonzalez

AU - Grziwa, Sascha

AU - Guenther, Eike W.

AU - Hatzes, Artie P.

AU - Hidalgo, Diego

AU - Hjorth, Maria

AU - Kabath, Petr

AU - Knudstrup, Emil

AU - Lund, Mikkel N.

AU - Mahadevan, Suvrath

AU - Mathur, Savita

AU - Rodríguez, Pilar Montañes

AU - Murgas, Felipe

AU - Narita, Norio

AU - Nespral, David

AU - Niraula, Prajwal

AU - Palle, Enric

AU - P tzold, Martin

AU - Persson, Carina M.

AU - Prieto-Arranz, Jorge

AU - Rauer, Heike

AU - Redfield, Seth

AU - Ribas, Ignasi

AU - Skarka, Marek

AU - Smith, Alexis M.S.

AU - Subjak, Jan

AU - Eylen, Vincent Van

PY - 2020

Y1 - 2020

N2 - K2-146 is a cool, 0.358M⊙ dwarf that was found to host a mini-Neptune with a 2.67 day period. The planet exhibited strong transit timing variations (TTVs) of greater than 30 minutes, indicative of the presence of an additional object in the system. Here we report the discovery of the previously undetected outer planet in the system, K2-146 c, using additional photometric data. K2-146 c was found to have a grazing transit geometry and a 3.97 day period. The outer planet was only significantly detected in the latter K2 campaigns presumably because of precession of its orbital plane. The TTVs of K2-146 b and c were measured using observations spanning a baseline of almost 1200 days. We found strong anti-correlation in the TTVs, suggesting the two planets are gravitationally interacting. Our TTV and transit model analyses revealed that K2-146 b has a radius of 2.25 ± 0.10 R⊕ and a mass of 5.6 ± 0.7 M⊕, whereas K2-146 c has a radius of 2.59-0.39+1.81 R⊕ and a mass of 7.1 ± 0.9 M⊕. The inner and outer planets likely have moderate eccentricities of e = 0.14 ± 0.07 and 0.16 ± 0.07, respectively. Long-term numerical integrations of the two-planet orbital solution show that it can be dynamically stable for at least 2 Myr. We show that the resonance angles of the planet pair are librating, which may be an indication that K2-146 b and c are in a 3:2 mean motion resonance. The orbital architecture of the system points to a possible convergent migration origin.

AB - K2-146 is a cool, 0.358M⊙ dwarf that was found to host a mini-Neptune with a 2.67 day period. The planet exhibited strong transit timing variations (TTVs) of greater than 30 minutes, indicative of the presence of an additional object in the system. Here we report the discovery of the previously undetected outer planet in the system, K2-146 c, using additional photometric data. K2-146 c was found to have a grazing transit geometry and a 3.97 day period. The outer planet was only significantly detected in the latter K2 campaigns presumably because of precession of its orbital plane. The TTVs of K2-146 b and c were measured using observations spanning a baseline of almost 1200 days. We found strong anti-correlation in the TTVs, suggesting the two planets are gravitationally interacting. Our TTV and transit model analyses revealed that K2-146 b has a radius of 2.25 ± 0.10 R⊕ and a mass of 5.6 ± 0.7 M⊕, whereas K2-146 c has a radius of 2.59-0.39+1.81 R⊕ and a mass of 7.1 ± 0.9 M⊕. The inner and outer planets likely have moderate eccentricities of e = 0.14 ± 0.07 and 0.16 ± 0.07, respectively. Long-term numerical integrations of the two-planet orbital solution show that it can be dynamically stable for at least 2 Myr. We show that the resonance angles of the planet pair are librating, which may be an indication that K2-146 b and c are in a 3:2 mean motion resonance. The orbital architecture of the system points to a possible convergent migration origin.

UR - http://www.scopus.com/inward/record.url?scp=85088709041&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ab66c9

DO - 10.3847/1538-3881/ab66c9

M3 - Journal article

AN - SCOPUS:85088709041

VL - 159

JO - The Astronomical Journal

JF - The Astronomical Journal

SN - 0004-6256

IS - 3

M1 - 120

ER -