Hubble space telescope high-resolution imaging of Kepler small and cool exoplanet host stars
Article
Article Title | Hubble space telescope high-resolution imaging of Kepler small and cool exoplanet host stars |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Gilliland, Ronald L. (Author), Cartier, Kimberly M. S. (Author), Adams, Elisabeth R. (Author), Ciardi, David R. (Author), Kalas, Paul (Author) and Wright, Jason T. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 149 (1), pp. 24-37 |
Article Number | 24 |
Number of Pages | 14 |
Year | 2015 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-6256/149/1/24 |
Web Address (URL) | http://iopscience.iop.org/article/10.1088/0004-6256/149/1/24 |
Abstract | High-resolution imaging is an important tool for follow-up study of exoplanet candidates found via transit detection with the Kepler mission. We discuss here Hubble Space Telescope imaging with the WFC3 of 23 stars that host particularly interesting Kepler planet candidates based on their small size and cool equilibrium temperature estimates. Results include detections, exclusion of background stars that could be a source of false positives for the transits, and detection of physically associated companions in a number of cases providing dilution measures necessary for planet parameter refinement. For six Kepler objects of interest, we find that there is ambiguity regarding which star hosts the transiting planet(s), with potentially strong implications for planetary characteristics. Our sample is evenly distributed in G, K, and M spectral types. Albeit with a small sample size, we find that physically associated binaries are more common than expected at each spectral type, reaching a factor of 10 frequency excess in M. We document the program detection sensitivities, detections, and deliverables to the Kepler follow-up program archive. |
Keywords | binaries: general; planetary systems; stars: late-type |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | For access to this article, please click on the URL link provided. |
Byline Affiliations | Pennsylvania State University, United States |
Planetary Science Institute, United States | |
National Aeronautics and Space Administration (NASA), United States | |
University of California, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4354/hubble-space-telescope-high-resolution-imaging-of-kepler-small-and-cool-exoplanet-host-stars
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