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

29 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

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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)",

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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

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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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