A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline

Matthew A. Cornachione; Adam S. Bolton; Jason D. Eastman; Maurice L. Wilson; Sharon X. Wang; Samson A. Johnson; David H. Sliski; Nate McCrady; Jason T. Wright; Peter Plavchan; John Asher Johnson; Jonathan Horner; Robert A. Wittenmyer

doi:10.1088/1538-3873/ab4103

A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline

Matthew A. Cornachione
, Adam S. Bolton
, Jason D. Eastman
, Maurice L. Wilson
, Sharon X. Wang
, Samson A. Johnson
, David H. Sliski
, Nate McCrady
, Jason T. Wright
, Peter Plavchan
, John Asher Johnson
, Jonathan Horner
, Robert A. Wittenmyer

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

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 spectroperfectionism 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.

Original language	English
Article number	124503
Journal	Publications of the Astronomical Society of the Pacific
Volume	131
Issue number	1006
DOIs	https://doi.org/10.1088/1538-3873/ab4103
State	Published - Dec 2019

Funding

Funding for MINERVA data-analysis software development is provided through a subaward under NASA award MT-13-EPSCoR-0011. M.A.C. acknowledges support from the National Science Foundation under grant AST-1614018. MINERVA is a collaboration among the Harvard-Smithso-nian Center for Astrophysics, The Pennsylvania State University, the University of Montana, and the University of Southern Queensland. MINERVA is made possible by generous contributions from its collaborating institutions and Mt. Cuba Astronomical Foundation, The David & Lucile Packard Foundation, National Aeronautics and Space Administration (EPSCOR grant NNX13AM97A), The Australian Research Council (LIEF grant LE140100050), and the National Science Foundation (grants 1516242 and 1608203). Any opinions, findings, and conclusions or recommendations expressed are those of the author and do not necessarily reflect the views of the National Science Foundation.

Funders	Funder number
LE140100050
AST-1614018, 1516242, 1608203
David and Lucile Packard Foundation
National Aeronautics and Space Administration	MT-13-EPSCoR-0011
NNX13AM97A
Australian Research Council

Keywords

Planets and satellites: Detection
Techniques: Image processing
Techniques: Radial velocities
Techniques: Spectroscopic

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10.1088/1538-3873/ab4103

Cite this

Cornachione, M. A., Bolton, A. S., Eastman, J. D., Wilson, M. L., Wang, S. X., Johnson, S. A., Sliski, D. H., McCrady, N., Wright, J. T., Plavchan, P., Johnson, J. A., Horner, J., & Wittenmyer, R. A. (2019). A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline. Publications of the Astronomical Society of the Pacific, 131(1006), Article 124503. https://doi.org/10.1088/1538-3873/ab4103

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title = "A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline",

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 spectroperfectionism 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, Techniques: Radial velocities, Techniques: Spectroscopic",

author = "Cornachione, \{Matthew A.\} and Bolton, \{Adam S.\} and Eastman, \{Jason D.\} and Wilson, \{Maurice L.\} and Wang, \{Sharon X.\} and Johnson, \{Samson A.\} and Sliski, \{David H.\} and Nate McCrady and Wright, \{Jason T.\} and Peter Plavchan and Johnson, \{John Asher\} and Jonathan Horner and Wittenmyer, \{Robert A.\}",

year = "2019",

month = dec,

doi = "10.1088/1538-3873/ab4103",

language = "English",

volume = "131",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "Institute of Physics",

number = "1006",

}

Cornachione, MA, Bolton, AS, Eastman, JD, Wilson, ML, Wang, SX, Johnson, SA, Sliski, DH, McCrady, N, Wright, JT, Plavchan, P, Johnson, JA, Horner, J & Wittenmyer, RA 2019, 'A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline', Publications of the Astronomical Society of the Pacific, vol. 131, no. 1006, 124503. https://doi.org/10.1088/1538-3873/ab4103

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. et al.
In: Publications of the Astronomical Society of the Pacific, Vol. 131, No. 1006, 124503, 12.2019.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection

T2 - A test case with the MINERVA reduction pipeline

AU - Cornachione, Matthew A.

AU - Bolton, Adam S.

AU - Eastman, Jason D.

AU - Wilson, Maurice L.

AU - Wang, Sharon X.

AU - Johnson, Samson A.

AU - Sliski, David H.

AU - McCrady, Nate

AU - Wright, Jason T.

AU - Plavchan, Peter

AU - Johnson, John Asher

AU - Horner, Jonathan

AU - Wittenmyer, Robert A.

PY - 2019/12

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N2 - 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 spectroperfectionism 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.

AB - 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 spectroperfectionism 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.

KW - Planets and satellites: Detection

KW - Techniques: Image processing

KW - Techniques: Radial velocities

KW - Techniques: Spectroscopic

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DO - 10.1088/1538-3873/ab4103

M3 - Article

AN - SCOPUS:85075580235

SN - 0004-6280

VL - 131

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 1006

M1 - 124503

ER -

A full implementation of spectro-perfectionism for precise radial velocity exoplanet detection: A test case with the MINERVA reduction pipeline

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