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SIM PlanetQuest key project precursor observations to detect gas giant planets around young stars

Show simple item record Tanner, Angelle Beichman, Charles Akeson, Rachel Ghez, Andrea Grankin, Konstantin N. Herbst, William Hillenbrand, Lynne Huerta, Marcos Konopacky, Quinn Metchev, Stanimir Mohanty, Subhanjoy Prato, L. Simon, Michal 2008-08-21T22:22:51Z 2008-08-21T22:22:51Z 2008-02-01
dc.identifier.citation 25 May 2007. 25 pp, arXiv:0705.3687 [astro-ph] en_US
dc.identifier.citation Accepted for publication in Publications of the Astronomical Society of the Pacific
dc.identifier.clearanceno 07-1758
dc.description.abstract We present a review of precursor observing programs for the SIM PlanetQuest Key project devoted to detecting Jupiter mass planets around young stars. In order to ensure that the stars in the sample are free of various sources of astrometric noise that might impede the detection of planets, we have initiated programs to collect photometry, high contrast images, interferometric data and radial velocities for stars in both the Northern and Southern hemispheres. We have completed a high contrast imaging survey of target stars in Taurus and the Pleiades and found no definitive common proper motion companions within one arcsecond (140 AU) of the SIM targets. Our radial velocity surveys have shown that many of the target stars in Sco-Cen are fast rotators and a few stars in Taurus and the Pleiades may have sub-stellar companions. Interferometric data of a few stars in Taurus show no signs of stellar or sub-stellar companions with separations of <5 mas. The photometric survey suggests that approximately half of the stars initially selected for this program are variable to a degree (1σ >0.1 mag) that would degrade the astrometric accuracy achievable for that star. While the precursor programs are still a work in progress, we provide a comprehensive list of all targets ranked according to their viability as a result of the observations taken to date. By far, the observable that removes the most targets from the SIM-YSO program is photometric variability. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher University of Chicago Press en_US
dc.subject astrometry en_US
dc.subject pre-main sequence en_US
dc.subject extrasolar planets en_US
dc.subject astrophysics
dc.title SIM PlanetQuest key project precursor observations to detect gas giant planets around young stars en_US
dc.type Article en_US

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