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Proceedings Paper

Observing the PTPS sample of evolved exoplanet host candidates using the NPOI
Author(s): Ellyn K. Baines; J. Thomas Armstrong; Henrique R. Schmitt; R. T. Zavala; James A. Benson; Andrzej Niedzielski; Pawel Zielinski; Martin Vanko; Aleksander Wolszczan
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Paper Abstract

We plan to measure the angular diameters of a sample of Penn State-Torun Planet Search (PTPS) giant exoplanet host star candidates using the Navy Precision Optical Interferometer. The radii of evolved giant stars obtained using spectroscopy are usually ill-defined because of the method’s indirect nature and evolutionary model dependency. The star’s radius is a critical parameter used to calculate luminosity and mass, which are often not well known for giant stars. Therefore, this problem also affects the orbital period, mass, and surface temperature of the planet. Our interferometric observations will significantly decrease the errors for these parameters. We present preliminary results from NPOI observations of six stars in the PTPS sample.

Paper Details

Date Published: 4 August 2016
PDF: 8 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99073T (4 August 2016); doi: 10.1117/12.2233159
Show Author Affiliations
Ellyn K. Baines, Naval Research Lab. (United States)
J. Thomas Armstrong, Naval Research Lab. (United States)
Henrique R. Schmitt, Naval Research Lab. (United States)
R. T. Zavala, U.S. Naval Observatory (United States)
James A. Benson, U.S. Naval Observatory (United States)
Andrzej Niedzielski, Nicolaus Copernicus Univ. (Poland)
Pawel Zielinski, Masaryk Univ. (Czech Republic)
Martin Vanko, Slovak Academy of Sciences (Slovakia)
Aleksander Wolszczan, Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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