Adaptive optics images of Kepler objects of interest
Article
Article Title | Adaptive optics images of Kepler objects of interest |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Adams, E. R. (Author), Ciardi, D. R. (Author), Dupree, A. K. (Author), Gautier, T. N. (Author), Kulesa, C. (Author) and McCarthy, D. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 144 (2), pp. 42-49 |
Article Number | 144 |
Number of Pages | 8 |
Year | 2012 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-6256/144/2/42 |
Web Address (URL) | http://iopscience.iop.org/article/10.1088/0004-6256/144/2/42 |
Abstract | All transiting planets are at risk of contamination by blends with nearby, unresolved stars. Blends dilute the transit signal, causing the planet to appear smaller than it really is, or produce a false-positive detection when the target star is blended with eclipsing binary stars. This paper reports on high spatial-resolution adaptive optics images of 90 Kepler planetary candidates. Companion stars are detected as close as 01 from the target star. Images were taken in the near-infrared (J and Ks bands) with ARIES on the MMT and PHARO on the Palomar Hale 200 inch telescope. Most objects (60%) have at least one star within 6″ separation and a magnitude difference of 9. Eighteen objects (20%) have at least one companion within 2″ of the target star; six companions (7%) are closer than 05. Most of these companions were previously unknown, and the associated planetary candidates should receive additional scrutiny. Limits are placed on the presence of additional companions for every system observed, which can be used to validate planets statistically using the BLENDER method. Validation is particularly critical for low-mass, potentially Earth-like worlds, which are not detectable with current-generation radial velocity techniques. High-resolution images are thus a crucial component of any transit follow-up program. |
Keywords | binaries; instrumentation: adaptive optics; planets and satellites; detection; |
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. |
Erratum citation: Adams, E. R. and Dupree, A. K. and Ciardi, D. R. and Gautier, T. N. and Kulesa, C. and McCarthy, D. (2013) Erratum: Adaptive optics images of kepler objects of interest (Astronomical Journal (2012) 144 (42)). Astronomical Journal, 146 (3). ISSN 00046256 | |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
National Aeronautics and Space Administration (NASA), United States | |
California Institute of Technology (Caltech), United States | |
University of Arizona, United States |
https://research.usq.edu.au/item/q4320/adaptive-optics-images-of-kepler-objects-of-interest
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