On the alignment of debris disks and their host stars' rotation axis -implications for spin-orbit misalignment in exoplanetary systems
It has been widely thought that measuring the misalignment angle between the orbital plane of a transiting exoplanet and the spin of its host star was a good discriminator between different migration processes for hot-Jupiters. Specifically, well-aligned hot-Jupiter systems (as measured by the Rossi...
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| creator | Watson, C A Littlefair, S P Diamond, C A Collier Cameron Fitzsimmons, A Simpson, E Moulds, V Pollacco, D |
| description | It has been widely thought that measuring the misalignment angle between the orbital plane of a transiting exoplanet and the spin of its host star was a good discriminator between different migration processes for hot-Jupiters. Specifically, well-aligned hot-Jupiter systems (as measured by the Rossiter-McLaughlin effect) were thought to have formed via migration through interaction with a viscous disk, while misaligned systems were thought to have undergone a more violent dynamical history. These conclusions were based on the assumption that the planet-forming disk was well-aligned with the host star. Recent work by a number of authors has challenged this assumption by proposing mechanisms that act to drive the star-disk interaction out of alignment during the pre-main sequence phase. We have estimated the stellar rotation axis of a sample of stars which host spatially resolved debris disks. Comparison of our derived stellar rotation axis inclination angles with the geometrically measured debris-disk inclinations shows no evidence for a misalignment between the two. |
| doi_str_mv | 10.48550/arxiv.1009.4132 |
| format | Article |
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Specifically, well-aligned hot-Jupiter systems (as measured by the Rossiter-McLaughlin effect) were thought to have formed via migration through interaction with a viscous disk, while misaligned systems were thought to have undergone a more violent dynamical history. These conclusions were based on the assumption that the planet-forming disk was well-aligned with the host star. Recent work by a number of authors has challenged this assumption by proposing mechanisms that act to drive the star-disk interaction out of alignment during the pre-main sequence phase. We have estimated the stellar rotation axis of a sample of stars which host spatially resolved debris disks. Comparison of our derived stellar rotation axis inclination angles with the geometrically measured debris-disk inclinations shows no evidence for a misalignment between the two.</description><subject>Alignment</subject><subject>Debris</subject><subject>Extrasolar planets</subject><subject>Inclination angle</subject><subject>Migration</subject><subject>Misalignment</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><subject>Planet formation</subject><subject>Planetary orbits</subject><subject>Planetary systems</subject><subject>Pre-main sequence stars</subject><subject>Star formation</subject><subject>Stellar rotation</subject><subject>Transit</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNpFkEtLAzEURoMgWGr3riTgwtXUe5N5ZJZSfIHQTfdDppOxqTPJmJtK-wf83U5bwdWFy-HwcRi7QZinKsvgQYe9_Z4jQDlPUYoLNhFSYqJSIa7YjGgLACIvRJbJCftZOh43huvOfrjeuMh9yxtTB0u8sfRJXLvmSNjAN54ip6gD3fPgo47WO673I5nYfujs-vQh3vrAabAu8aG2kfeW_u3WcbP3Q6edGUUHTgeKpqdrdtnqjszs707Z6vlptXhN3pcvb4vH90RnCEmKpijLtclbVTcK12iELnMoG52XBUBaKmiFqnNsBKCs80IiprIRWEM68rWcstuz9tSoGoLtxxHVsVV1bDUCd2dgCP5rZyhWW78LbpxUCVAikwoR5C935m30</recordid><startdate>20110221</startdate><enddate>20110221</enddate><creator>Watson, C A</creator><creator>Littlefair, S P</creator><creator>Diamond, C</creator><creator>A Collier Cameron</creator><creator>Fitzsimmons, A</creator><creator>Simpson, E</creator><creator>Moulds, V</creator><creator>Pollacco, D</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20110221</creationdate><title>On the alignment of debris disks and their host stars' rotation axis -implications for spin-orbit misalignment in exoplanetary systems</title><author>Watson, C A ; 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| source | Freely Accessible Journals; arXiv.org |
| subjects | Alignment Debris Extrasolar planets Inclination angle Migration Misalignment Physics - Earth and Planetary Astrophysics Physics - Solar and Stellar Astrophysics Planet formation Planetary orbits Planetary systems Pre-main sequence stars Star formation Stellar rotation Transit |
| title | On the alignment of debris disks and their host stars' rotation axis -implications for spin-orbit misalignment in exoplanetary systems |
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