Host star properties and transit exclusion for the HD 38529 planetary system

Henry, Gregory W. and Kane, Stephen R. and Wang, Sharon X. and Wright, Jason T. and Boyajian, Tabetha S. and von Braun, Kaspar and Ciardi, David R. and Dragomir, Diana and Farrington, Chris and Fischer, Debra A. and Hinkel, Natalie R. and Howard, Andrew W. and Jensen, Eric and Laughlin, Gregory and Mahadevan, Suvrath and Pilyavsky, Genady (2013) Host star properties and transit exclusion for the HD 38529 planetary system. The Astrophysical Journal, 768 (2). pp. 155-163. ISSN 0004-637X

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Abstract

The transit signature of exoplanets provides an avenue through which characterization of exoplanetary properties may be undertaken, such as studies of mean density, structure, and atmospheric composition. The Transit Ephemeris Refinement and Monitoring Survey is a program to expand the catalog of transiting planets around bright host stars by refining the orbits of known planets discovered with the radial velocity technique. Here we present results for the HD 38529 system. We determine fundamental properties of the host star through direct interferometric measurements of the radius and through spectroscopic analysis. We provide new radial velocity measurements that are used to improve the Keplerian solution for the two known planets, and we find no evidence for a previously postulated third planet. We also present 12 years of precision robotic photometry of HD 38529 that demonstrate the inner planet does not transit and the host star exhibits cyclic variations in seasonal mean brightness with a timescale of approximately six years.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 05 Jun 2017 02:58
Last Modified: 27 Jun 2017 04:30
Uncontrolled Keywords: planetary systems; stars: individual (HD 38529); techniques: photometric; techniques: radial velocities;
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1088/0004-637X/768/2/155
URI: http://eprints.usq.edu.au/id/eprint/32128

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