A solar feed for NEID

Andrea S J Lin ,Zhao Guo,Lawrence W Ramsey,Shubham Kanodia,Suvrath Mahadevan,Fred Hearty,Chad F Bender,Arpita Roy,Colin Nitroy,Christian Schwab,Joe P Ninan,Emily Hunting,Michael W Mcelwain,Paul Robertson,Daniel J Stevens,Eric B Ford ,Jason T Wright,Samuel Halverson ,Ryan C Terrien,Jayadev Rajagopal ,Kyle Kaplan,Guðmundur Stefánsson ,Andrew Monson

doi:10.1117/12.2561520

A solar feed for NEID

Andrea S J Lin , Zhao Guo + Show 21 more

Open Access

https://doi.org/10.1117/12.2561520

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Publication Date: Dec 13, 2020

Affiliation: Pennsylvania State University, University of Arizona, California Institute of Technology, Macquarie University, NSF’s NOIRLab, Goddard Space Flight Center, University of California, Irvine, Jet Propulsion Laboratory, Ames Research Center

#Kitt Peak National Observatory #WIYN Telescope + Show 8 more

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Abstract

NEID is a radial velocity (RV) instrument including an ultra-stabilized fiber-fed spectrograph, installed in 2019 at the 3.5m WIYN telescope at Kitt Peak National Observatory. Accompanying it is a solar feed system built to supply the spectrograph with disk-integrated sunlight. Observing the Sun “as a star” is essential for developing and validating mitigation strategies for RV variations due to stellar activity and instrument systematics, thus enabling more-effective detections of lower-mass exoplanets. In this paper, we will detail the design of the NEID solar feed system and showcase early results addressing NEID systematics and solar RV variability.

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