A third exoplanetary system with misaligned orbital and stellar spin axes

John Asher Johnson; Joshua N. Winn; Simon Albrecht; Andrew W. Howard; Geoffrey W. Marcy; J. Zachary Gazak

doi:10.1086/644604

A third exoplanetary system with misaligned orbital and stellar spin axes

John Asher Johnson, Joshua N. Winn, Simon Albrecht, Andrew W. Howard, Geoffrey W. Marcy, J. Zachary Gazak

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80 Scopus citations

Abstract

We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellarrotational axes, with an angle A = -33.1° ± 7.4° between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have "super-Jupiter" planets (M P > 3 M_Jup) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.

Original language	English (US)
Pages (from-to)	1104-1111
Number of pages	8
Journal	Publications of the Astronomical Society of the Pacific
Volume	121
Issue number	884
DOIs	https://doi.org/10.1086/644604
State	Published - Oct 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/644604

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title = "A third exoplanetary system with misaligned orbital and stellar spin axes",

abstract = "We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellarrotational axes, with an angle A = -33.1° ± 7.4° between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have {"}super-Jupiter{"} planets (M P > 3 MJup) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.",

author = "Johnson, \{John Asher\} and Winn, \{Joshua N.\} and Simon Albrecht and Howard, \{Andrew W.\} and Marcy, \{Geoffrey W.\} and Gazak, \{J. Zachary\}",

year = "2009",

month = oct,

doi = "10.1086/644604",

language = "English (US)",

volume = "121",

pages = "1104--1111",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "Institute of Physics Publishing",

number = "884",

}

TY - JOUR

T1 - A third exoplanetary system with misaligned orbital and stellar spin axes

AU - Johnson, John Asher

AU - Winn, Joshua N.

AU - Albrecht, Simon

AU - Howard, Andrew W.

AU - Marcy, Geoffrey W.

AU - Gazak, J. Zachary

PY - 2009/10

Y1 - 2009/10

N2 - We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellarrotational axes, with an angle A = -33.1° ± 7.4° between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have "super-Jupiter" planets (M P > 3 MJup) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.

AB - We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellarrotational axes, with an angle A = -33.1° ± 7.4° between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have "super-Jupiter" planets (M P > 3 MJup) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.

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M3 - Article

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JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

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ER -

A third exoplanetary system with misaligned orbital and stellar spin axes

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