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Period Error Estimation for the Kepler Eclipsing Binary Catalog

Mighell, Kenneth J. and Plavchan, Peter (2013) Period Error Estimation for the Kepler Eclipsing Binary Catalog. Astronomical Journal, 145 (6). Art. No. 148. ISSN 0004-6256.

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The Kepler Eclipsing Binary Catalog (KEBC) describes 2165 eclipsing binaries identified in the 115 deg^2 Kepler Field based on observations from Kepler quarters Q0, Q1, and Q2. The periods in the KEBC are given in units of days out to six decimal places but no period errors are provided. We present the PEC (Period Error Calculator) algorithm, which can be used to estimate the period errors of strictly periodic variables observed by the Kepler Mission. The PEC algorithm is based on propagation of error theory and assumes that observation of every light curve peak/minimum in a long time-series observation can be unambiguously identified. The PEC algorithm can be efficiently programmed using just a few lines of C computer language code. The PEC algorithm was used to develop a simple model that provides period error estimates for eclipsing binaries in the KEBC with periods less than 62.5 days: log σ P ≈ – 5.8908 + 1.4425(1 + log P), where P is the period of an eclipsing binary in the KEBC in units of days. KEBC systems with periods ≥62.5 days have KEBC period errors of ~0.0144 days. Periods and period errors of seven eclipsing binary systems in the KEBC were measured using the NASA Exoplanet Archive Periodogram Service and compared to period errors estimated using the PEC algorithm.

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Plavchan, Peter0000-0002-8864-1667
Additional Information:© 2013 American Astronomical Society. Received 2013 January 30; accepted 2013 March 31; published 2013 April 30. This study was supported by NASA grant NNX10AC52G. This paper includes data collected by the Kepler Mission. Kepler was competitively selected as the tenth Discovery mission. Funding for this mission is provided by NASA’s Science Mission Directorate. This research has made use of the NASA Exoplanet Archive Periodogram Service, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. This research has made use of NASA’s Astrophysics Data System Bibliographic Services. Facility: Kepler
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:binaries: eclipsing; catalogs; methods: data analysis; methods: statistical
Issue or Number:6
Record Number:CaltechAUTHORS:20130628-133358858
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Official Citation:Period Error Estimation for the Kepler Eclipsing Binary Catalog Kenneth J. Mighell and Peter Plavchan doi:10.1088/0004-6256/145/6/148
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39146
Deposited By: Ruth Sustaita
Deposited On:28 Jun 2013 20:55
Last Modified:03 Oct 2019 05:04

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