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Spitzer IRAC Sparsely Sampled Phase Curve of the Exoplanet WASP-14b

Krick, J. E. and Ingalls, J. and Carey, S. and von Braun, K. and Kane, S. R. and Ciardi, D. and Plavchan, P. and Wong, I. and Lowrance, P. (2016) Spitzer IRAC Sparsely Sampled Phase Curve of the Exoplanet WASP-14b. Astrophysical Journal, 824 (1). Art. No. 27. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20161018-133712344

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/0004-637X/824/1/27DOIArticle
http://iopscience.iop.org/article/10.3847/0004-637X/824/1/27/meta#artAbstPublisherArticle
https://arxiv.org/abs/1603.03383arXivDiscussion Paper
ORCID:
AuthorORCID
Ingalls, J.0000-0003-4714-1364
Carey, S.0000-0002-0221-6871
von Braun, K.0000-0002-5823-4630
Kane, S. R.0000-0002-7084-0529
Ciardi, D.0000-0002-5741-3047
Plavchan, P.0000-0002-8864-1667
Wong, I.0000-0001-9665-8429
Lowrance, P.0000-0001-8014-0270
Additional Information:© 2016 American Astronomical Society. Received 2015 September 4; accepted 2016 March 9; published 2016 June 7. We thank the referee Nikole Lewis for useful suggestions which have greatly improved the manuscript. This research has made use of data from the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work was based on observations obtained with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This research has made use of the NASA/ IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of exoplanet.eu. Facility: Spitzer(IRAC) - Spitzer Space Telescope satellite.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:instrumentation: detectors; methods: data analysis; planetary systems; planets and satellites: atmospheres; stars: individual (WASP-14, HD 158460)
Issue or Number:1
Record Number:CaltechAUTHORS:20161018-133712344
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161018-133712344
Official Citation:J. E. Krick et al 2016 ApJ 824 27
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71229
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Oct 2016 23:05
Last Modified:04 Nov 2019 19:18

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