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dc.creatorMcArthur, Barbara E.en_US
dc.creatorBenedict, G. Fritzen_US
dc.creatorHenry, Gregory W.en_US
dc.creatorHatzes, Artieen_US
dc.creatorCochran, William D.en_US
dc.creatorHarrison, Thomas E.en_US
dc.creatorJohns-Krull, Chrisen_US
dc.creatorNelan, Eden_US
dc.date.accessioned2016-04-28T22:21:51Z
dc.date.available2016-04-28T22:21:51Z
dc.date.issued2014-11en
dc.identifierdoi:10.15781/T2VZ40
dc.identifier.citationMcArthur, Barbara E., G. Fritz Benedict, Gregory W. Henry, Artie Hatzes, William D. Cochran, Tom E. Harrison, Chris Johns-Krull, and Ed Nelan. "Astrometry, Radial Velocity, and Photometry: The HD 128311 System Remixed with Data from HST, HET, and APT." The Astrophysical Journal, Vol. 795, No. 1 (Nov., 2014): 41.en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/35199
dc.description.abstractWe have used high-cadence radial velocity measurements from the Hobby-Eberly Telescope with published velocities from the Lick 3 m Shane Telescope, combined with astrometric data from the Hubble Space Telescope (HST) Fine Guidance Sensors to refine the orbital parameters of the HD 128311 system, and determine an inclination of 55.degrees 95 +/- 14.degrees 55 and true mass of 3.789(+0.924)(-0.432) M-JUP for HD 128311 c. The combined radial velocity data also reveal a short period signal which could indicate a third planet in the system with an M sin i of 0.133 +/- 0.005 M-JUP or stellar phenomena. Photometry from the T12 0.8 m automatic photometric telescope at the Fairborn Observatory and HST are used to determine a photometric period close to, but not within the errors of the radial velocity signal. We performed a cross-correlation bisector analysis of the radial velocity data to look for correlations with the photometric period and found none. Dynamical integrations of the proposed system show long-term stability with the new orbital parameters of over 10 million years. Our new orbital elements do not support the claims of HD 128311 b and c being in mean motion resonance.en_US
dc.description.sponsorshipNASA from the Space Telescope Science Institute GO-09971, GO-10103, GO-11210en_US
dc.description.sponsorshipNASA NAS5-26555en_US
dc.description.sponsorshipNASAen_US
dc.description.sponsorshipNSFen_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectastrometryen_US
dc.subjectparallaxesen_US
dc.subjectplanetary systemsen_US
dc.subjectplanets and satellites:en_US
dc.subjectdynamical evolution and stabilityen_US
dc.subjectstars: individual (hd 128311, upsilonen_US
dc.subjectandromedae)en_US
dc.subjecthubble-space-telescopeen_US
dc.subjectextrasolar planetary systemsen_US
dc.subjectmean motionen_US
dc.subjectresonancesen_US
dc.subjecthobby-eberly telescopeen_US
dc.subjectexoplanet host starsen_US
dc.subjectmain-sequenceen_US
dc.subjectstarsen_US
dc.subjectsolar-type starsen_US
dc.subjectsun-like starsen_US
dc.subjectdebris disksen_US
dc.subjectcool starsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleAstrometry, Radial Velocity, And Photometry: The Hd 128311 System Remixed With Data From Hst, Het, And Apten_US
dc.typeArticleen_US
dc.description.departmentMcDonald Observatoryen_US
dc.identifier.Filename2014_11_hd128311.pdfen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1088/0004-637x/795/1/41en_US
dc.contributor.utaustinauthorMcArthur, Barbara E.en_US
dc.contributor.utaustinauthorBenedict, G. Fritzen_US
dc.contributor.utaustinauthorCochran, William D.en_US
dc.relation.ispartofserialAstrophysical Journalen_US


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