The Anglo-Australian planet search. XX. A solitary ice-giant planet orbiting HD 102365

C. G. Tinney; R. Paul Butler; H.R.A. Jones; Robert A. Wittenmyer; Simon O'Toole; Jeremy Bailey; Brad D. Carter

doi:10.1088/0004-637X/727/2/103

The Anglo-Australian planet search. XX. A solitary ice-giant planet orbiting HD 102365

C. G. Tinney, R. Paul Butler, H.R.A. Jones, Robert A. Wittenmyer, Simon O'Toole, Jeremy Bailey, Brad D. Carter

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

5 Citations (Scopus)

Abstract

We present 12 years of precision Doppler data for the very nearby G3 star HD 102365, which reveals the presence of a Neptune-like planet with a 16.0 M-Earth minimum mass in a 122.1 day orbit. Very few "Super Earth" planets have been discovered to date in orbits this large and those that have been found reside in multiple systems of between three and six planets. HD 102365 b, in contrast, appears to orbit its star in splendid isolation. Analysis of the residuals to our Keplerian fit for HD 102365 b indicates that there are no other planets with minimum mass above 0.3 M-Jup orbiting within 5 AU and no other "Super Earths" more massive than 10 M-Earth orbiting at periods shorter than 50 days. At periods of less than 20 days these limits drop to as low as 6 M-Earth. There are now 32 exoplanets known with minimum mass below 20 M-Earth, and interestingly the period distributions of these low-mass planets seem to be similar whether they orbit M-, K-, or G-type dwarfs.

Original language	English
Article number	103
Pages (from-to)	103-110
Number of pages	7
Journal	The Astrophysical Journal
Volume	727
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/727/2/103
Publication status	Published - 2011

Keywords

planetary systems
stars: individual (HD 102365)
EXTRA-SOLAR PLANETS
M-CIRCLE-PLUS
SUN-LIKE STAR
NEPTUNE-MASS PLANETS
MAIN-SEQUENCE STARS
HARPS SEARCH
SUPER-EARTH
DETERMINISTIC MODEL
MAGNETIC ACTIVITY
NEARBY STARS

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10.1088/0004-637X/727/2/103

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title = "The Anglo-Australian planet search. XX. A solitary ice-giant planet orbiting HD 102365",

abstract = "We present 12 years of precision Doppler data for the very nearby G3 star HD 102365, which reveals the presence of a Neptune-like planet with a 16.0 M-Earth minimum mass in a 122.1 day orbit. Very few {"}Super Earth{"} planets have been discovered to date in orbits this large and those that have been found reside in multiple systems of between three and six planets. HD 102365 b, in contrast, appears to orbit its star in splendid isolation. Analysis of the residuals to our Keplerian fit for HD 102365 b indicates that there are no other planets with minimum mass above 0.3 M-Jup orbiting within 5 AU and no other {"}Super Earths{"} more massive than 10 M-Earth orbiting at periods shorter than 50 days. At periods of less than 20 days these limits drop to as low as 6 M-Earth. There are now 32 exoplanets known with minimum mass below 20 M-Earth, and interestingly the period distributions of these low-mass planets seem to be similar whether they orbit M-, K-, or G-type dwarfs.",

keywords = "planetary systems, stars: individual (HD 102365), EXTRA-SOLAR PLANETS, M-CIRCLE-PLUS, SUN-LIKE STAR, NEPTUNE-MASS PLANETS, MAIN-SEQUENCE STARS, HARPS SEARCH, SUPER-EARTH, DETERMINISTIC MODEL, MAGNETIC ACTIVITY, NEARBY STARS",

author = "Tinney, {C. G.} and Butler, {R. Paul} and H.R.A. Jones and Wittenmyer, {Robert A.} and Simon O'Toole and Jeremy Bailey and Carter, {Brad D.}",

note = "{\textquoteleft}In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.{\textquoteright} Original article can be found at: http://iopscience.iop.org/ Copyright American Astronomical Society [Full text of this article is not available in the UHRA]",

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doi = "10.1088/0004-637X/727/2/103",

language = "English",

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T1 - The Anglo-Australian planet search. XX. A solitary ice-giant planet orbiting HD 102365

AU - Tinney, C. G.

AU - Butler, R. Paul

AU - Jones, H.R.A.

AU - Wittenmyer, Robert A.

AU - O'Toole, Simon

AU - Bailey, Jeremy

AU - Carter, Brad D.

N1 - ‘In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.’ Original article can be found at: http://iopscience.iop.org/ Copyright American Astronomical Society [Full text of this article is not available in the UHRA]

PY - 2011

Y1 - 2011

N2 - We present 12 years of precision Doppler data for the very nearby G3 star HD 102365, which reveals the presence of a Neptune-like planet with a 16.0 M-Earth minimum mass in a 122.1 day orbit. Very few "Super Earth" planets have been discovered to date in orbits this large and those that have been found reside in multiple systems of between three and six planets. HD 102365 b, in contrast, appears to orbit its star in splendid isolation. Analysis of the residuals to our Keplerian fit for HD 102365 b indicates that there are no other planets with minimum mass above 0.3 M-Jup orbiting within 5 AU and no other "Super Earths" more massive than 10 M-Earth orbiting at periods shorter than 50 days. At periods of less than 20 days these limits drop to as low as 6 M-Earth. There are now 32 exoplanets known with minimum mass below 20 M-Earth, and interestingly the period distributions of these low-mass planets seem to be similar whether they orbit M-, K-, or G-type dwarfs.

AB - We present 12 years of precision Doppler data for the very nearby G3 star HD 102365, which reveals the presence of a Neptune-like planet with a 16.0 M-Earth minimum mass in a 122.1 day orbit. Very few "Super Earth" planets have been discovered to date in orbits this large and those that have been found reside in multiple systems of between three and six planets. HD 102365 b, in contrast, appears to orbit its star in splendid isolation. Analysis of the residuals to our Keplerian fit for HD 102365 b indicates that there are no other planets with minimum mass above 0.3 M-Jup orbiting within 5 AU and no other "Super Earths" more massive than 10 M-Earth orbiting at periods shorter than 50 days. At periods of less than 20 days these limits drop to as low as 6 M-Earth. There are now 32 exoplanets known with minimum mass below 20 M-Earth, and interestingly the period distributions of these low-mass planets seem to be similar whether they orbit M-, K-, or G-type dwarfs.

KW - planetary systems

KW - stars: individual (HD 102365)

KW - EXTRA-SOLAR PLANETS

KW - M-CIRCLE-PLUS

KW - SUN-LIKE STAR

KW - NEPTUNE-MASS PLANETS

KW - MAIN-SEQUENCE STARS

KW - HARPS SEARCH

KW - SUPER-EARTH

KW - DETERMINISTIC MODEL

KW - MAGNETIC ACTIVITY

KW - NEARBY STARS

U2 - 10.1088/0004-637X/727/2/103

DO - 10.1088/0004-637X/727/2/103

M3 - Article

SN - 0004-637X

VL - 727

SP - 103

EP - 110

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

M1 - 103

ER -

The Anglo-Australian planet search. XX. A solitary ice-giant planet orbiting HD 102365

Abstract

Keywords

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