Two New Planets from the Anglo-Australian Planet Search

R.P. Butler; C.G. Tinney; G.W. Marcy; H.R.A. Jones; A.J. Penny; K. Apps

Two New Planets from the Anglo-Australian Planet Search

R.P. Butler
, C.G. Tinney
, G.W. Marcy
, H.R.A. Jones
, A.J. Penny
, K. Apps

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

138 Citations (Scopus)

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Abstract

Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s~1, and a high eccentricity, e\0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s~1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s~1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.

Original language	English
Pages (from-to)	410-417
Journal	The Astrophysical Journal
Volume	555
Publication status	Published - Jul 2001

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@article{162373a3f9084419be8bc9d05208b6f4,

title = "Two New Planets from the Anglo-Australian Planet Search",

abstract = "Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s\textasciitilde{}1, and a high eccentricity, e\textbackslash{}0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s\textasciitilde{}1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s\textasciitilde{}1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.",

author = "R.P. Butler and C.G. Tinney and G.W. Marcy and H.R.A. Jones and A.J. Penny and K. Apps",

note = "Original article can be found at: http://www.journals.uchicago.edu/ Copyright The American Astronomical Society",

year = "2001",

month = jul,

language = "English",

volume = "555",

pages = "410--417",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

}

TY - JOUR

T1 - Two New Planets from the Anglo-Australian Planet Search

AU - Butler, R.P.

AU - Tinney, C.G.

AU - Marcy, G.W.

AU - Jones, H.R.A.

AU - Penny, A.J.

AU - Apps, K.

N1 - Original article can be found at: http://www.journals.uchicago.edu/ Copyright The American Astronomical Society

PY - 2001/7

Y1 - 2001/7

N2 - Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s~1, and a high eccentricity, e\0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s~1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s~1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.

AB - Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s~1, and a high eccentricity, e\0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s~1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s~1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.

M3 - Article

SN - 0004-637X

VL - 555

SP - 410

EP - 417

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

Two New Planets from the Anglo-Australian Planet Search

Abstract

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