A 5 μm image of β Pictoris b at A sub-Jupiter projected separation: Evidence for a misalignment between the planet and the inner, warped disk

Thayne Currie; Christian Thalmann; Soko Matsumura; Nikku Madhusudhan; Adam Burrows; Marc Kuchner

doi:10.1088/2041-8205/736/2/L33

A 5 μm image of β Pictoris b at A sub-Jupiter projected separation: Evidence for a misalignment between the planet and the inner, warped disk

Thayne Currie
, Christian Thalmann
, Soko Matsumura
, Nikku Madhusudhan
, Adam Burrows
, Marc Kuchner

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

47 Citations (Scopus)

Abstract

We present and analyze a new M' detection of the young exoplanet ß Pictoris b from 2008 VLT/NaCo data at a separation of ˜4 AU and a high signal-to-noise rereduction of L' data taken in 2009 December. Based on our orbital analysis, the planet's orbit is viewed almost perfectly edge-on (i ~ 89deg) and has a Saturn-like semimajor axis of 9.50AU . Intriguingly, the planet's orbit is aligned with the major axis of the outer disk (O ~ 31deg) but is probably misaligned with the warp/inclined disk at 80 AU, often cited as a signpost for the planet's existence. Our results motivate new studies to clarify how ß Pic b sculpts debris disk structures and whether a second planet is required to explain the warp/inclined disk.

Original language	English
Article number	L33
Journal	Astrophysical Journal Letters
Volume	736
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/736/2/L33
Publication status	Published - 1 Aug 2011

Keywords

planetary systems
stars: early-type
stars: individual β Pictoris

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10.1088/2041-8205/736/2/L33

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title = "A 5 μm image of β Pictoris b at A sub-Jupiter projected separation: Evidence for a misalignment between the planet and the inner, warped disk",

abstract = "We present and analyze a new M' detection of the young exoplanet {\ss} Pictoris b from 2008 VLT/NaCo data at a separation of ˜4 AU and a high signal-to-noise rereduction of L' data taken in 2009 December. Based on our orbital analysis, the planet's orbit is viewed almost perfectly edge-on (i \textasciitilde{} 89deg) and has a Saturn-like semimajor axis of 9.50AU . Intriguingly, the planet's orbit is aligned with the major axis of the outer disk (O \textasciitilde{} 31deg) but is probably misaligned with the warp/inclined disk at 80 AU, often cited as a signpost for the planet's existence. Our results motivate new studies to clarify how {\ss} Pic b sculpts debris disk structures and whether a second planet is required to explain the warp/inclined disk.",

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T2 - Evidence for a misalignment between the planet and the inner, warped disk

AU - Currie, Thayne

AU - Thalmann, Christian

AU - Matsumura, Soko

AU - Madhusudhan, Nikku

AU - Burrows, Adam

AU - Kuchner, Marc

PY - 2011/8/1

Y1 - 2011/8/1

N2 - We present and analyze a new M' detection of the young exoplanet ß Pictoris b from 2008 VLT/NaCo data at a separation of ˜4 AU and a high signal-to-noise rereduction of L' data taken in 2009 December. Based on our orbital analysis, the planet's orbit is viewed almost perfectly edge-on (i ~ 89deg) and has a Saturn-like semimajor axis of 9.50AU . Intriguingly, the planet's orbit is aligned with the major axis of the outer disk (O ~ 31deg) but is probably misaligned with the warp/inclined disk at 80 AU, often cited as a signpost for the planet's existence. Our results motivate new studies to clarify how ß Pic b sculpts debris disk structures and whether a second planet is required to explain the warp/inclined disk.

AB - We present and analyze a new M' detection of the young exoplanet ß Pictoris b from 2008 VLT/NaCo data at a separation of ˜4 AU and a high signal-to-noise rereduction of L' data taken in 2009 December. Based on our orbital analysis, the planet's orbit is viewed almost perfectly edge-on (i ~ 89deg) and has a Saturn-like semimajor axis of 9.50AU . Intriguingly, the planet's orbit is aligned with the major axis of the outer disk (O ~ 31deg) but is probably misaligned with the warp/inclined disk at 80 AU, often cited as a signpost for the planet's existence. Our results motivate new studies to clarify how ß Pic b sculpts debris disk structures and whether a second planet is required to explain the warp/inclined disk.

KW - planetary systems

KW - stars: early-type

KW - stars: individual β Pictoris

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A 5 μm image of β Pictoris b at A sub-Jupiter projected separation: Evidence for a misalignment between the planet and the inner, warped disk

Abstract

Keywords

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