DOPPLER MONITORING OF THE WASP-47 MULTIPLANET SYSTEM

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, a...

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Main Authors: Dai, Fei (Contributor), Arriagada, Pamela (Author), Butler, R. Paul (Author), Crane, Jeffrey D. (Author), Johnson, John Asher (Author), Shectman, Stephen A. (Author), Teske, Johanna K. (Author), Thompson, Ian B. (Author), Vanderburg, Andrew (Author), Wittenmyer, Robert A. (Author), Winn, Joshua Nathan (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), MIT Kavli Institute for Astrophysics and Space Research (Contributor)
Format: Article
Language:English
Published: IOP Publishing, 2016-01-14T00:06:25Z.
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Online Access:Get fulltext
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100 1 0 |a Dai, Fei  |e author 
100 1 0 |a Massachusetts Institute of Technology. Department of Physics  |e contributor 
100 1 0 |a MIT Kavli Institute for Astrophysics and Space Research  |e contributor 
100 1 0 |a Dai, Fei  |e contributor 
100 1 0 |a Winn, Joshua Nathan  |e contributor 
700 1 0 |a Arriagada, Pamela  |e author 
700 1 0 |a Butler, R. Paul  |e author 
700 1 0 |a Crane, Jeffrey D.  |e author 
700 1 0 |a Johnson, John Asher  |e author 
700 1 0 |a Shectman, Stephen A.  |e author 
700 1 0 |a Teske, Johanna K.  |e author 
700 1 0 |a Thompson, Ian B.  |e author 
700 1 0 |a Vanderburg, Andrew  |e author 
700 1 0 |a Wittenmyer, Robert A.  |e author 
700 1 0 |a Winn, Joshua Nathan  |e author 
245 0 0 |a DOPPLER MONITORING OF THE WASP-47 MULTIPLANET SYSTEM 
260 |b IOP Publishing,   |c 2016-01-14T00:06:25Z. 
856 |z Get fulltext  |u http://hdl.handle.net/1721.1/100820 
520 |a 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 370 ± 29[subscript ⊕]. 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 12.2 ± 3.7[subscript ⊕], in agreement with the TTV-based upper limit of <22 M[subscript ⊕] (95% confidence). For the outer planet WASP-47d, the Doppler mass constraint of 10.4 ± 8.4[subscript ⊕] is consistent with the TTV-based measurement of $15.2[+6.7 over -7.6] M[subscript ⊕]. 
520 |a United States. National Aeronautics and Space Administration (Origins Program Grant NNX11AG85G) 
546 |a en_US 
655 7 |a Article 
773 |t The Astrophysical Journal. Letters