The Jupiter twin HD 154345b

J. T. Wright; G. W. Marcy; R. P. Butler; S. S. Vogt; G. W. Henry; H. Isaacson; A. W. Howard

doi:10.1086/587461

The Jupiter twin HD 154345b

J. T. Wright, G. W. Marcy, R. P. Butler, S. S. Vogt, G. W. Henry, H. Isaacson, A. W. Howard

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58 Scopus citations

Abstract

We announce the discovery of a twin of Jupiter orbiting the slightly metal-poor ([Fe/H]=-0.1) nearby (d=18 pc) G8 dwarf HD 154345. This planet has a minimum mass of 0.95 M_Jup and a 9.2 year, circular orbit with radius 4.2 AU. There is currently little or no evidence for other planets in the system, but smaller or exterior planets cannot yet be ruled out. We also detect a-9 year activity cycle in this star photometrically and in chromospheric emission. We rule out activity cycles as the source of the radial velocity variations by comparison with other cycling late G dwarfs.

Original language	English (US)
Pages (from-to)	L63-L66
Journal	Astrophysical Journal
Volume	683
Issue number	1 PART 2
DOIs	https://doi.org/10.1086/587461
State	Published - 2008

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/587461

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abstract = "We announce the discovery of a twin of Jupiter orbiting the slightly metal-poor ([Fe/H]=-0.1) nearby (d=18 pc) G8 dwarf HD 154345. This planet has a minimum mass of 0.95 MJup and a 9.2 year, circular orbit with radius 4.2 AU. There is currently little or no evidence for other planets in the system, but smaller or exterior planets cannot yet be ruled out. We also detect a-9 year activity cycle in this star photometrically and in chromospheric emission. We rule out activity cycles as the source of the radial velocity variations by comparison with other cycling late G dwarfs.",

author = "Wright, {J. T.} and Marcy, {G. W.} and Butler, {R. P.} and Vogt, {S. S.} and Henry, {G. W.} and H. Isaacson and Howard, {A. W.}",

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AU - Wright, J. T.

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AU - Butler, R. P.

AU - Vogt, S. S.

AU - Henry, G. W.

AU - Isaacson, H.

AU - Howard, A. W.

PY - 2008

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AB - We announce the discovery of a twin of Jupiter orbiting the slightly metal-poor ([Fe/H]=-0.1) nearby (d=18 pc) G8 dwarf HD 154345. This planet has a minimum mass of 0.95 MJup and a 9.2 year, circular orbit with radius 4.2 AU. There is currently little or no evidence for other planets in the system, but smaller or exterior planets cannot yet be ruled out. We also detect a-9 year activity cycle in this star photometrically and in chromospheric emission. We rule out activity cycles as the source of the radial velocity variations by comparison with other cycling late G dwarfs.

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The Jupiter twin HD 154345b

Abstract

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