journal article
Open Access Collection
A Full Implementation of Spectro-Perfectionism for Precise Radial Velocity Exoplanet Detection: A Test Case With the MINERVA Reduction Pipeline
Cornachione, Matthew A.;Bolton, Adam S.;Eastman, Jason D.;Wilson, Maurice L.;Wang, Sharon X.;Johnson, Samson A.;Sliski, David H.;McCrady, Nate;Wright, Jason T.;Plavchan, Peter;Johnson, John Asher;Horner, Jonathan;Wittenmeyer, Robert A.
2019 Astrophysics
doi: 10.1088/1538-3873/ab4103pmid: N/A
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 $30\,\text{min}$. We describe our localized extraction procedure and our approach to point spread function fitting. We compare the performance of both extraction methods on a set of 119 exposures on HD122064, 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 point spread function fitting and the potential of spectro-perfectionism for future precise radial velocity exoplanet studies.