Spitzer IRAC sparsely sampled phase curve of the exoplanet Wasp-14B
Article
Article Title | Spitzer IRAC sparsely sampled phase curve of the exoplanet Wasp-14B |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Krick, J. E. (Author), Ingalls, J. (Author), Carey, S. (Author), von Braun, K. (Author), Kane, S. R. (Author), Ciardi, D. (Author), Plavchan, P. (Author), Wong, I. (Author) and Lowrance, P. (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 824 (1), pp. 27-42 |
Article Number | 27 |
Number of Pages | 16 |
Year | 2016 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/0004-637X/824/1/27 |
Web Address (URL) | http://iopscience.iop.org/article/10.3847/0004-637X/824/1/27/ |
Abstract | Motivated by a high Spitzer IRAC oversubscription rate, we present a new technique of randomly and sparsely sampling the phase curves of hot Jupiters. Snapshot phase curves are enabled by technical advances in precision pointing as well as careful characterization of a portion of the central pixel on the array. This method allows for observations which are a factor of approximately two more efficient than full phase curve observations, and are furthermore easier to insert into the Spitzer observing schedule. We present our pilot study from this program using the exoplanet WASP-14b. Data of this system were taken both as a sparsely sampled phase curve as well as a staring-mode phase curve. Both data sets, as well as snapshot-style observations of a calibration star, are used to validate this technique. By fitting our WASP-14b phase snapshot data set, we successfully recover physical parameters for the transit and eclipse depths as well as the amplitude and maximum and minimum of the phase curve shape of this slightly eccentric hot Jupiter. We place a limit on the potential phase to phase variation of these parameters since our data are taken over many phases over the course of a year. We see no evidence for eclipse depth variations compared to other published WASP-14b eclipse depths over a 3.5 year baseline. |
Keywords | instrumentation: detectors; methods: data analysis; planetary systems; planets and satellites: atmospheres; stars; WASP-14, HD 158460 |
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 | California Institute of Technology (Caltech), United States |
Lowell Observatory, United States | |
San Francisco State University, United States | |
Missouri State University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q434y/spitzer-irac-sparsely-sampled-phase-curve-of-the-exoplanet-wasp-14b
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