A SEARCH FOR GIANT PLANET COMPANIONS TO T TAURI STARS

Simple item page
dc.citation.firstpage167en_US
dc.citation.journalTitleThe Astrophysical Journalen_US
dc.citation.lastpage184en_US
dc.citation.volumeNumber761en_US
dc.contributor.authorCrockett, Christopher J.en_US
dc.contributor.authorMahmud, Naved I.en_US
dc.contributor.authorPrato, L.en_US
dc.contributor.authorJohns-Krull, Christopher M.en_US
dc.contributor.authorJaffe, Daniel T.en_US
dc.contributor.authorHartigan, Patrick M.en_US
dc.contributor.authorBeichman, Charles A.en_US
dc.date.accessioned2013-03-13T19:37:50Zen_US
dc.date.available2014-03-19T05:10:04Zen_US
dc.date.issued2012en_US
dc.description.abstractWe present results from an ongoing multiwavelength radial velocity (RV) survey of the Taurus–Auriga star-forming region as part of our effort to identify pre-main-sequence giant planet hosts. These 1–3 Myr old T Tauri stars present significant challenges to traditional RV surveys. The presence of strong magnetic fields gives rise to large, cool star spots. These spots introduce significant RV jitter which can mimic the velocity modulation from a planet-mass companion. To distinguish between spot-induced and planet-induced RV modulation, we conduct observations at ∼6700Åand∼2.3μmand measure thewavelength dependence (if any) in theRVamplitude. CSHELL observations of the known exoplanet host Gl 86 demonstrate our ability to detect not only hot Jupiters in the near-infrared but also secular trends from more distant companions. Observations of nine very young stars reveal a typical reduction in RV amplitude at the longer wavelengths by a factor of ∼2–3. While we cannot confirm the presence of planets in this sample, three targets show different periodicities in the two wavelength regions. This suggests different physical mechanisms underlying the optical and the K-band variability.en_US
dc.embargo.terms1 yearen_US
dc.identifier.citationCrockett, Christopher J., Mahmud, Naved I., Prato, L., et al.. "A SEARCH FOR GIANT PLANET COMPANIONS TO T TAURI STARS." <i>The Astrophysical Journal,</i> 761, (2012) The American Astronomical Society: 167-184. http://dx.doi.org/10.1088/0004-637X/761/2/164.en_US
dc.identifier.doihttp://dx.doi.org/10.1088/0004-637X/761/2/164en_US
dc.identifier.urihttps://hdl.handle.net/1911/70572en_US
dc.language.isoengen_US
dc.publisherThe American Astronomical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordplanets and satellitesen_US
dc.subject.keyworddetection – starsen_US
dc.subject.keywordpre-main sequence – techniquesen_US
dc.subject.keywordradial velocitiesen_US
dc.titleA SEARCH FOR GIANT PLANET COMPANIONS TO T TAURI STARSen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
SEARCH-GIANT-PLANET.pdf
Size:
2.03 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.61 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Physics and Astronomy Publications
Faculty Publications