A detailed analysis of the HD 73526 2:1 resonant planetary system

Robert A. Wittenmyer; Xianyu Tan; Man Hoi Lee; Jonathan Horner; C.G. Tinney; R. P. Butler; G. S. Salter; B. D. Carter; H.R.A. Jones; S. J. O'Toole; J. Bailey; D. Wright; J. D. Crane; S. A. Schectman; P. Arriagada; I. Thompson; D. Minniti; M. Diaz

doi:10.1088/0004-637X/780/2/140

A detailed analysis of the HD 73526 2:1 resonant planetary system

Robert A. Wittenmyer, Xianyu Tan, Man Hoi Lee, Jonathan Horner, C.G. Tinney, R. P. Butler, G. S. Salter, B. D. Carter, H.R.A. Jones, S. J. O'Toole, J. Bailey, D. Wright, J. D. Crane, S. A. Schectman, P. Arriagada, I. Thompson, D. Minniti, M. Diaz

Centre for Astrophysics Research (CAR)

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Abstract

We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these data, yielding four possible configurations for the system. The new data now show that both resonance angles are librating, with amplitudes of 40 degrees and 60 degrees, respectively. We then perform long-term dynamical stability tests to differentiate these solutions, which only differ significantly in the masses of the planets. We show that while there is no clearly preferred system inclination, the dynamical fit with i = 90 degrees provides the best combination of goodness-of-fit and long-term dynamical stability.

Original language	English
Article number	140
Number of pages	9
Journal	The Astrophysical Journal
Volume	780
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/780/2/140
Publication status	Published - 10 Jan 2014

Keywords

methods: numerical
planets and satellites: dynamical evolution and stability
planets and satellites: individual (HD 73526)
techniques: radial velocities
MEAN-MOTION RESONANCE
RADIAL-VELOCITY DATA
DYNAMICAL ANALYSIS
GIANT PLANET
EXOPLANETARY SYSTEM
MULTIPLANET SYSTEMS
EXTRASOLAR PLANETS
SUPER-EARTH
COOL STARS
KEPLER

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Wittenmyer, R. A., Tan, X., Lee, M. H., Horner, J., Tinney, C. G., Butler, R. P., Salter, G. S., Carter, B. D., Jones, H. R. A., O'Toole, S. J., Bailey, J., Wright, D., Crane, J. D., Schectman, S. A., Arriagada, P., Thompson, I., Minniti, D., & Diaz, M. (2014). A detailed analysis of the HD 73526 2:1 resonant planetary system. The Astrophysical Journal, 780(2), Article 140. https://doi.org/10.1088/0004-637X/780/2/140

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title = "A detailed analysis of the HD 73526 2:1 resonant planetary system",

abstract = "We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these data, yielding four possible configurations for the system. The new data now show that both resonance angles are librating, with amplitudes of 40 degrees and 60 degrees, respectively. We then perform long-term dynamical stability tests to differentiate these solutions, which only differ significantly in the masses of the planets. We show that while there is no clearly preferred system inclination, the dynamical fit with i = 90 degrees provides the best combination of goodness-of-fit and long-term dynamical stability.",

keywords = "methods: numerical, planets and satellites: dynamical evolution and stability, planets and satellites: individual (HD 73526), techniques: radial velocities, MEAN-MOTION RESONANCE, RADIAL-VELOCITY DATA, DYNAMICAL ANALYSIS, GIANT PLANET, EXOPLANETARY SYSTEM, MULTIPLANET SYSTEMS, EXTRASOLAR PLANETS, SUPER-EARTH, COOL STARS, KEPLER",

author = "Wittenmyer, {Robert A.} and Xianyu Tan and Lee, {Man Hoi} and Jonathan Horner and C.G. Tinney and Butler, {R. P.} and Salter, {G. S.} and Carter, {B. D.} and H.R.A. Jones and O'Toole, {S. J.} and J. Bailey and D. Wright and Crane, {J. D.} and Schectman, {S. A.} and P. Arriagada and I. Thompson and D. Minniti and M. Diaz",

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doi = "10.1088/0004-637X/780/2/140",

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Wittenmyer, RA, Tan, X, Lee, MH, Horner, J, Tinney, CG, Butler, RP, Salter, GS, Carter, BD, Jones, HRA, O'Toole, SJ, Bailey, J, Wright, D, Crane, JD, Schectman, SA, Arriagada, P, Thompson, I, Minniti, D & Diaz, M 2014, 'A detailed analysis of the HD 73526 2:1 resonant planetary system', The Astrophysical Journal, vol. 780, no. 2, 140. https://doi.org/10.1088/0004-637X/780/2/140

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T1 - A detailed analysis of the HD 73526 2:1 resonant planetary system

AU - Wittenmyer, Robert A.

AU - Tan, Xianyu

AU - Lee, Man Hoi

AU - Horner, Jonathan

AU - Tinney, C.G.

AU - Butler, R. P.

AU - Salter, G. S.

AU - Carter, B. D.

AU - Jones, H.R.A.

AU - O'Toole, S. J.

AU - Bailey, J.

AU - Wright, D.

AU - Crane, J. D.

AU - Schectman, S. A.

AU - Arriagada, P.

AU - Thompson, I.

AU - Minniti, D.

AU - Diaz, M.

PY - 2014/1/10

Y1 - 2014/1/10

N2 - We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these data, yielding four possible configurations for the system. The new data now show that both resonance angles are librating, with amplitudes of 40 degrees and 60 degrees, respectively. We then perform long-term dynamical stability tests to differentiate these solutions, which only differ significantly in the masses of the planets. We show that while there is no clearly preferred system inclination, the dynamical fit with i = 90 degrees provides the best combination of goodness-of-fit and long-term dynamical stability.

AB - We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these data, yielding four possible configurations for the system. The new data now show that both resonance angles are librating, with amplitudes of 40 degrees and 60 degrees, respectively. We then perform long-term dynamical stability tests to differentiate these solutions, which only differ significantly in the masses of the planets. We show that while there is no clearly preferred system inclination, the dynamical fit with i = 90 degrees provides the best combination of goodness-of-fit and long-term dynamical stability.

KW - methods: numerical

KW - planets and satellites: dynamical evolution and stability

KW - planets and satellites: individual (HD 73526)

KW - techniques: radial velocities

KW - MEAN-MOTION RESONANCE

KW - RADIAL-VELOCITY DATA

KW - DYNAMICAL ANALYSIS

KW - GIANT PLANET

KW - EXOPLANETARY SYSTEM

KW - MULTIPLANET SYSTEMS

KW - EXTRASOLAR PLANETS

KW - SUPER-EARTH

KW - COOL STARS

KW - KEPLER

U2 - 10.1088/0004-637X/780/2/140

DO - 10.1088/0004-637X/780/2/140

M3 - Article

SN - 0004-637X

VL - 780

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

M1 - 140

ER -

A detailed analysis of the HD 73526 2:1 resonant planetary system

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Keywords

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