The pan-pacific planet search. II. Confirmation of a two-planet system around HD 121056

Robert A. Wittenmyer; Liang Wang; Fan Liu; Jonathan Horner; Michael Endl; John Asher Johnson; C. G. Tinney; B. D. Carter

doi:10.1088/0004-637X/800/1/74

The pan-pacific planet search. II. Confirmation of a two-planet system around HD 121056

Robert A. Wittenmyer
, Liang Wang
, Fan Liu
, Jonathan Horner
, Michael Endl
, John Asher Johnson
, C. G. Tinney
, B. D. Carter

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

19 Citations (Scopus)

Abstract

Precise radial velocities from the Anglo-Australian Telescope (AAT) confirm the presence of a rare short-period planet around the K0 giant HD 121056. An independent two-planet solution using the AAT data shows that the inner planet has P = 89.1 ± 0.1 days, and m sin i = 1.35 ± 0.17 M_Jup. These data also confirm the planetary nature of the outer companion, with m sin i = 3.9 ± 0.6 M_Jup and a = 2.96 ± 0.16 AU. HD 121056 is the most-evolved star to host a confirmed multiple-planet system, and is a valuable example of a giant star hosting both a short-period and a long-period planet.

Original language	English
Article number	74
Journal	Astrophysical Journal
Volume	800
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/800/1/74
Publication status	Published - 10 Feb 2015

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10.1088/0004-637X/800/1/74

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title = "The pan-pacific planet search. II. Confirmation of a two-planet system around HD 121056",

abstract = "Precise radial velocities from the Anglo-Australian Telescope (AAT) confirm the presence of a rare short-period planet around the K0 giant HD 121056. An independent two-planet solution using the AAT data shows that the inner planet has P = 89.1 ± 0.1 days, and m sin i = 1.35 ± 0.17 MJup. These data also confirm the planetary nature of the outer companion, with m sin i = 3.9 ± 0.6 MJup and a = 2.96 ± 0.16 AU. HD 121056 is the most-evolved star to host a confirmed multiple-planet system, and is a valuable example of a giant star hosting both a short-period and a long-period planet.",

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T1 - The pan-pacific planet search. II. Confirmation of a two-planet system around HD 121056

AU - Wittenmyer, Robert A.

AU - Wang, Liang

AU - Liu, Fan

AU - Horner, Jonathan

AU - Endl, Michael

AU - Johnson, John Asher

AU - Tinney, C. G.

AU - Carter, B. D.

PY - 2015/2/10

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AB - Precise radial velocities from the Anglo-Australian Telescope (AAT) confirm the presence of a rare short-period planet around the K0 giant HD 121056. An independent two-planet solution using the AAT data shows that the inner planet has P = 89.1 ± 0.1 days, and m sin i = 1.35 ± 0.17 MJup. These data also confirm the planetary nature of the outer companion, with m sin i = 3.9 ± 0.6 MJup and a = 2.96 ± 0.16 AU. HD 121056 is the most-evolved star to host a confirmed multiple-planet system, and is a valuable example of a giant star hosting both a short-period and a long-period planet.

KW - Planetary systems

KW - Stars: individual (HD 121056)

KW - Techniques: radial velocities

UR - https://www.scopus.com/pages/publications/84922693037

U2 - 10.1088/0004-637X/800/1/74

DO - 10.1088/0004-637X/800/1/74

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

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ER -

The pan-pacific planet search. II. Confirmation of a two-planet system around HD 121056

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