Doppler monitoring of the WASP-47 multiplanet system

Fei Dai; Joshua N. Winn; Pamela Arriagada; R. Paul Butler; Jeffrey D. Crane; John Asher Johnson; Stephen A. Shectman; Johanna K. Teske; Ian B. Thompson; Andrew Vanderburg; Robert A. Wittenmyer

doi:10.1088/2041-8205/813/1/L9

Doppler monitoring of the WASP-47 multiplanet system

Fei Dai
, Joshua N. Winn
, Pamela Arriagada
, R. Paul Butler
, Jeffrey D. Crane
, John Asher Johnson
, Stephen A. Shectman
, Johanna K. Teske
, Ian B. Thompson
, Andrew Vanderburg
, Robert A. Wittenmyer

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

32 Scopus citations

Abstract

We present precise Doppler observations of WASP-47, a transiting planetary system featuring a hot Jupiter with both inner and outer planetary companions. This system has an unusual architecture and also provides a rare opportunity to measure planet masses in two different ways: the Doppler method, and the analysis of transit-timing variations (TTV). Based on the new Doppler data, obtained with the Planet Finder Spectrograph on the Magellan/Clay 6.5 m telescope, the mass of the hot Jupiter is This is consistent with the previous Doppler determination as well as the TTV determination. For the inner planet WASP-47e, the Doppler data lead to a mass of in agreement with the TTV-based upper limit of <22 M_⊕ (95% confidence).

Original language	English (US)
Article number	L9
Journal	Astrophysical Journal Letters
Volume	813
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/813/1/L9
State	Published - Nov 1 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planetary systems
planets and satellites: composition
stars: individual (WASP-47)
techniques: radial velocities

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10.1088/2041-8205/813/1/L9

Cite this

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title = "Doppler monitoring of the WASP-47 multiplanet system",

abstract = "We present precise Doppler observations of WASP-47, a transiting planetary system featuring a hot Jupiter with both inner and outer planetary companions. This system has an unusual architecture and also provides a rare opportunity to measure planet masses in two different ways: the Doppler method, and the analysis of transit-timing variations (TTV). Based on the new Doppler data, obtained with the Planet Finder Spectrograph on the Magellan/Clay 6.5 m telescope, the mass of the hot Jupiter is This is consistent with the previous Doppler determination as well as the TTV determination. For the inner planet WASP-47e, the Doppler data lead to a mass of in agreement with the TTV-based upper limit of <22 M⊕ (95\% confidence).",

keywords = "planetary systems, planets and satellites: composition, stars: individual (WASP-47), techniques: radial velocities",

author = "Fei Dai and Winn, \{Joshua N.\} and Pamela Arriagada and Butler, \{R. Paul\} and Crane, \{Jeffrey D.\} and Johnson, \{John Asher\} and Shectman, \{Stephen A.\} and Teske, \{Johanna K.\} and Thompson, \{Ian B.\} and Andrew Vanderburg and Wittenmyer, \{Robert A.\}",

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doi = "10.1088/2041-8205/813/1/L9",

language = "English (US)",

volume = "813",

journal = "Astrophysical Journal Letters",

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TY - JOUR

T1 - Doppler monitoring of the WASP-47 multiplanet system

AU - Dai, Fei

AU - Winn, Joshua N.

AU - Arriagada, Pamela

AU - Butler, R. Paul

AU - Crane, Jeffrey D.

AU - Johnson, John Asher

AU - Shectman, Stephen A.

AU - Teske, Johanna K.

AU - Thompson, Ian B.

AU - Vanderburg, Andrew

AU - Wittenmyer, Robert A.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - We present precise Doppler observations of WASP-47, a transiting planetary system featuring a hot Jupiter with both inner and outer planetary companions. This system has an unusual architecture and also provides a rare opportunity to measure planet masses in two different ways: the Doppler method, and the analysis of transit-timing variations (TTV). Based on the new Doppler data, obtained with the Planet Finder Spectrograph on the Magellan/Clay 6.5 m telescope, the mass of the hot Jupiter is This is consistent with the previous Doppler determination as well as the TTV determination. For the inner planet WASP-47e, the Doppler data lead to a mass of in agreement with the TTV-based upper limit of <22 M⊕ (95% confidence).

AB - We present precise Doppler observations of WASP-47, a transiting planetary system featuring a hot Jupiter with both inner and outer planetary companions. This system has an unusual architecture and also provides a rare opportunity to measure planet masses in two different ways: the Doppler method, and the analysis of transit-timing variations (TTV). Based on the new Doppler data, obtained with the Planet Finder Spectrograph on the Magellan/Clay 6.5 m telescope, the mass of the hot Jupiter is This is consistent with the previous Doppler determination as well as the TTV determination. For the inner planet WASP-47e, the Doppler data lead to a mass of in agreement with the TTV-based upper limit of <22 M⊕ (95% confidence).

KW - planetary systems

KW - planets and satellites: composition

KW - stars: individual (WASP-47)

KW - techniques: radial velocities

UR - https://www.scopus.com/pages/publications/84947603788

UR - https://www.scopus.com/pages/publications/84947603788#tab=citedBy

U2 - 10.1088/2041-8205/813/1/L9

DO - 10.1088/2041-8205/813/1/L9

M3 - Article

AN - SCOPUS:84947603788

SN - 2041-8205

VL - 813

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L9

ER -

Doppler monitoring of the WASP-47 multiplanet system

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

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