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Revised Orbit and Transit Exclusion for HD 114762b

Kane, Stephen R. and Henry, George W. and Dragomir, Diana and Fischer, Debra A. and Howard, Andrew W. and Wang, Xuesong and Wright, Jason T. (2011) Revised Orbit and Transit Exclusion for HD 114762b. Astrophysical Journal Letters, 735 (2). Art. No. L41. ISSN 2041-8205.

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Transiting planets around bright stars have allowed the detailed follow-up and characterization of exoplanets, such as the study of exoplanetary atmospheres. The Transit Ephemeris Refinement and Monitoring Survey is refining the orbits of the known exoplanets to confirm or rule out both transit signatures and the presence of additional companions. Here we present results for the companion orbiting HD 114762 in an eccentric 84 day orbit. Radial velocity analysis performed on 19 years of Lick Observatory data constrain the uncertainty in the predicted time of mid-transit to ~5 hr, which is less than the predicted one-half day transit duration. We find no evidence of additional companions in this system. New photometric observations with one of our Automated Photoelectric Telescopes at Fairborn Observatory taken during a revised transit time for companion b, along with 23 years of nightly automated observations, allow us to rule out on-time central transits to a limit of ~0.001 mag. Early or late central transits are ruled out to a limit of ~0.002 mag, and transits with half the duration of a central transit are ruled out to a limit of ~0.003 mag.

Item Type:Article
Related URLs:
URLURL TypeDescription
Kane, Stephen R.0000-0002-7084-0529
Henry, George W.0000-0003-4155-8513
Dragomir, Diana0000-0003-2313-467X
Fischer, Debra A.0000-0003-2221-0861
Howard, Andrew W.0000-0001-8638-0320
Wang, Xuesong0000-0002-6937-9034
Wright, Jason T.0000-0001-6160-5888
Additional Information:© 2011 American Astronomical Society. Received 2011 May 1; accepted 2011 June 7; published 2011 June 22. The authors thank David Latham for useful comments on the manuscript. We also thank the anonymous referee, whose comments greatly improved the quality of the Letter. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. G.W.H. acknowledges long-term support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Tennessee State UniversityUNSPECIFIED
State of Tennessee Centers of Excellence programUNSPECIFIED
Subject Keywords:planetary systems; stars: individual (HD 114762); techniques: photometric; techniques: radial velocities
Issue or Number:2
Classification Code:PACS: 95.75.De,97.82.Cp
Record Number:CaltechAUTHORS:20110815-094603221
Persistent URL:
Official Citation:Revised Orbit and Transit Exclusion for HD 114762b Stephen R. Kane et al. 2011 ApJ 735 L41
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24847
Deposited By: Jason Perez
Deposited On:15 Aug 2011 18:15
Last Modified:09 Mar 2020 13:18

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