Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Removal of Polynomials From Raw Aperture Flux Time Series?

  1. Dec 5, 2011 #1
    Hello! This is my first post so forgive any errors of decorum. :eek:)

    I am a student working toward a degree in astrophysics but I'd like to jump a few years ahead when it comes to the study of exoplanets. While examining some data about the new discovery of Kepler-22b, I noticed a plotted data set described as a "flux time series after [the] removal of a second-order polynomial for each segment and normalizing the data of each quarter by the median" (see Figure 1 here). I'd like to better understand what this means. Any guidance, links, or direction would be greatly appreciated.

    I understand a flux time series is, of course, a measure of the light arriving from the star as plotted over time but I do not understand the process of removing polynomials and normalizing the data or the value of doing these things. My assumption is that this involves some sort of reverse local regression.

    Thank you in advance for any contribution to my efforts.
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Threads - Removal Polynomials Aperture Date
Single-dish radio telescope aperture Jan 15, 2014
Stargazing Aperture of ISO telescope May 6, 2012
[Question] What would happen if gravity were removed? May 6, 2011
Space junk removing Apr 21, 2011
Removing space debris Mar 13, 2011