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Title page for ETD etd-03272017-130141


Type of Document Dissertation
Author Lund, Michael Bryant
Author's Email Address Mike.Lund@gmail.com
URN etd-03272017-130141
Title Understanding Exoplanets and Other Variable Sources in Sparsely-Sampled Time Domain Surveys
Degree PhD
Department Physics
Advisory Committee
Advisor Name Title
Keivan G. Stassun Committee Chair
Andreas A. Berlind Committee Member
David A. Weintraub Committee Member
Joshua Pepper Committee Member
Paul Sheldon Committee Member
Keywords
  • periodogram
  • cadence
  • Hot Jupiter
  • Boyajians star
  • KIC8462852
  • novae
  • stars
  • planets
  • exoplanets
Date of Defense 2017-03-15
Availability unrestricted
Abstract
As astronomy expands into the era of Big Data, with increased data capture and storage capabilities and enhanced computing power, the large data sets that will become accessible need to be properly understood to maximize their scientific yield. Some of this data will be generated by upcoming missions, such as the Large Synoptic Survey Telescope (LSST). For this telescope we demonstrate that while it was not specifically designed for it, LSST can recover transiting exoplanets for several archetypal planetary systems. We also provide a set of tools built upon the LSST Metric Analysis Framework (MAF) that quantify how the LSST time sampling will impact observing both periodic and non-periodic variable sources. Other data will be the large data sets generated from archival data, such as from Digital Access to a Sky Century @ Harvard (DASCH), a database of digitized photographic plates over a century. We take a sample of F2 stars from the DASCH archive, and use a series of statistical tests to determine that there are large-scale systematics. After accounting for a large break in the data, we find that most F2 stars do not appear to change in brightness on century timescales, however we also provide a handful of stars that do seem to be changing over long timescales.
Files
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