Stellar Diameters and Temperatures – V. 11 Newly Characterized Exoplanet Host Stars
- Creators
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von Braun, Kaspar
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Boyajian, Tabetha S.
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van Belle, Gerard T.
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Kane, Stephen R.
- Jones, Jeremy
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Farrington, Chris
- Schaefer, Gail
- Vargas, Norm
- Scott, Nic
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ten Brummelaar, Theo A.
- Kephart, Miranda
- Gies, Douglas R.
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Ciardi, David R.
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Lόpez-Morales, Mercedes
- Mazingue, Cassidy
- McAlister, Harold A.
- Ridgway, Stephen
- Goldfinger, P. J.
- Turner, Nils H.
- Sturmann, Laszlo
Abstract
We use near-infrared interferometric data coupled with trigonometric parallax values and spectral energy distribution fitting to directly determine stellar radii, effective temperatures and luminosities for the exoplanet host stars 61 Vir, ρ CrB, GJ 176, GJ 614, GJ 649, GJ 876, HD 1461, HD 7924, HD 33564, HD 107383 and HD 210702. Three of these targets are M dwarfs. Statistical uncertainties in the stellar radii and effective temperatures range from 0.5 to 5 per cent and from 0.2 to 2 per cent, respectively. For eight of these targets, this work presents the first directly determined values of radius and temperature; for the other three, we provide updates to their properties. The stellar fundamental parameters are used to estimate stellar mass and calculate the location and extent of each system's circumstellar habitable zone. Two of these systems have planets that spend at least parts of their respective orbits in the system habitable zone: two of GJ 876's four planets and the planet that orbits HD 33564. We find that our value for GJ 876's stellar radius is more than 20 per cent larger than previous estimates and frequently used values in the astronomical literature.
Additional Information
© 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2013 December 3. Received 2013 November 21; in original form 2013 September 13. We thank the reviewer for the thorough analysis of the manuscript and helpful comments. We would furthermore like to express our sincere gratitude to Judit Sturmann for her tireless and invaluable support of observing operations at CHARA. Thanks to Sean Raymond, Barbara Rojas-Ayala, Phil Muirhead, Andrew Mann, Eric Gaidos and Lisa Kaltenegger for multiple insightful and useful discussions on various aspects of this work. TSB acknowledges support provided through NASA grant ADAP12-0172. The CHARA Array is funded by the National Science Foundation through NSF grants AST-0606958 and AST-0908253 and by Georgia State University through the College of Arts and Sciences, as well as the W. M. Keck Foundation. This research made use of the SIMBAD and VIZIER Astronomical Data bases, operated at CDS, Strasbourg, France (http://cdsweb.u-strasbg.fr/), and of NASA's Astrophysics Data System, of the Jean-Marie Mariotti Center SearchCal service (http://www.jmmc.fr/searchcal), co-developed by FIZEAU and LAOG/IPAG. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research made use of the NASA Exoplanet Archive (Akeson et al. 2013), which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This work has made use of the HZ Gallery at hzgallery.org (Kane&Gelino 2012). This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org (Wright et al. 2011a). This research has made use of the Exoplanet Encyclopedia at exoplanet.eu (Schneider et al. 2011).Attached Files
Published - MNRAS-2014-von_Braun-2413-25.pdf
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Additional details
- Eprint ID
- 44600
- Resolver ID
- CaltechAUTHORS:20140402-093544689
- ADAP12-0172
- NASA
- AST-0606958
- NSF
- AST-0908253
- NSF
- Georgia State University
- W. M. Keck Foundation
- Created
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2014-04-02Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)