A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: a test case with the MINERVA reduction pipeline
Article
Article Title | A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: a test case with the MINERVA reduction pipeline |
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ERA Journal ID | 1082 |
Article Category | Article |
Authors | Cornachione, Matthew A. (Author), Bolton, Adam S. (Author), Eastman, Jason D. (Author), Wilson, Maurice L. (Author), Wang, Sharon X. (Author), Johnson, Samson A. (Author), Sliski, David H. (Author), McCrady, Nate (Author), Wright, Jason T. (Author), Plavchan, Peter (Author), Johnson, John Asher (Author), Horner, Jonathan (Author) and Wittenmyer, Robert A. (Author) |
Journal Title | Publications of the Astronomical Society of the Pacific |
Journal Citation | 131 (1006) |
Article Number | 12450 |
Number of Pages | 13 |
Year | 2019 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6280 |
1538-3873 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/1538-3873/ab4103 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/1538-3873/ab4103 |
Abstract | We present a computationally tractable implementation of spectro-perfectionism, a method which minimizes error imparted by spectral extraction. We develop our method in conjunction with a full raw reduction pipeline for the MINiature Exoplanet Radial Velocity Array (MINERVA), capable of performing both optimal extraction and spectro-perfectionism. Although spectro-perfectionism remains computationally expensive, our implementation can extract a MINERVA exposure in approximately 30 minutes. We describe our localized extraction procedure and our approach to point-spread function (PSF) fitting. We compare the performance of both extraction methods on a set of 119 exposures on HD 122064, an RV standard star. Both the optimal extraction and spectro-perfectionism pipelines achieve nearly identical RV precision under a six-exposure chronological binning. We discuss the importance of reliable calibration data for PSF fitting and the potential of spectro-perfectionism for future precise radial velocity exoplanet studies. |
Keywords | planets and satellites, detection techniques, image processing, radial velocities, spectroscopic |
ANZSRC Field of Research 2020 | 519999. Other physical sciences not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Utah, United States |
National Optical Astronomy Observatory, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Carnegie Institution of Washington, United States | |
Ohio State University, United States | |
University of Pennsylvania, United States | |
University of Montana, United States | |
Pennsylvania State University, United States | |
George Mason University, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Centre for Astrophysics | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q58z1/a-full-implementation-of-spectro-perfectionism-for-precise-radial-velocity-exoplanet-detection-a-test-case-with-the-minerva-reduction-pipeline
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