Order-by-order Modeling of Exoplanet Radial Velocity Data Article Swipe
Zachary Langford
,
Samuel Halverson
,
Eric B. Ford
,
Mark R. Giovinazzi
,
Arvind F. Gupta
,
Chad F. Bender
,
Daniel M. Krolikowski
,
Arpita Roy
,
Christian Schwab
,
Ryan C. Terrien
,
Jason T. Wright
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1088/1538-3873/ae1640
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1088/1538-3873/ae1640
Precise radial velocity (RV) measurements are a crucial tool for exoplanet discovery and characterization. Today, the majority of these measurements are derived from Echelle spectra in the optical wavelength region using cross-correlation techniques. Although for certain stars these approaches can produce RVs with sub-1 m s −1 measurement errors, for many others, we are now in a regime where instrumental precision is fundamentally below the intrinsic RV variations of the star that result from astrophysical processes that can be correlated in both time and wavelength. We explore new methods for measuring exoplanet orbital parameters that take advantage of the fact that RV data sets are fundamentally multi-wavelength. By analyzing NEID extremely precise radial velocity (EPRV) data of three known exoplanet systems, we show that fitting a single Keplerian model to multi-wavelength RVs can produce a factor of 1.5–6.8 better uncertainties compared to fitting RVs that are derived from a weighted average across wavelength.
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Metadata
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- https://doi.org/10.1088/1538-3873/ae1640
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All OpenAlex metadata
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https://openalex.org/W4416201243Canonical identifier for this work in OpenAlex
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https://doi.org/10.1088/1538-3873/ae1640Digital Object Identifier
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Order-by-order Modeling of Exoplanet Radial Velocity DataWork title
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articleOpenAlex work type
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2025Year of publication
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2025-11-01Full publication date if available
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Zachary Langford, Samuel Halverson, Eric B. Ford, Mark R. Giovinazzi, Arvind F. Gupta, Chad F. Bender, Daniel M. Krolikowski, Arpita Roy, Christian Schwab, Ryan C. Terrien, Jason T. WrightList of authors in order
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https://doi.org/10.1088/1538-3873/ae1640Publisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1088/1538-3873/ae1640Direct OA link when available
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0Total citation count in OpenAlex
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29Number of works referenced by this work
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