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Proceedings Paper

A comprehensive radial velocity error budget for next generation Doppler spectrometers
Author(s): Samuel Halverson; Ryan Terrien; Suvrath Mahadevan; Arpita Roy; Chad Bender; Gudmundur Kári Stefánsson; Andrew Monson; Eric Levi; Fred Hearty; Cullen Blake; Michael McElwain; Christian Schwab; Lawrence Ramsey; Jason Wright; Sharon Wang; Qian Gong; Paul Roberston
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Paper Abstract

We describe a detailed radial velocity error budget for the NASA-NSF Extreme Precision Doppler Spectrometer instrument concept NEID (NN-explore Exoplanet Investigations with Doppler spectroscopy). Such an instrument performance budget is a necessity for both identifying the variety of noise sources currently limiting Doppler measurements, and estimating the achievable performance of next generation exoplanet hunting Doppler spectrometers. For these instruments, no single source of instrumental error is expected to set the overall measurement floor. Rather, the overall instrumental measurement precision is set by the contribution of many individual error sources. We use a combination of numerical simulations, educated estimates based on published materials, extrapolations of physical models, results from laboratory measurements of spectroscopic subsystems, and informed upper limits for a variety of error sources to identify likely sources of systematic error and construct our global instrument performance error budget. While natively focused on the performance of the NEID instrument, this modular performance budget is immediately adaptable to a number of current and future instruments. Such an approach is an important step in charting a path towards improving Doppler measurement precisions to the levels necessary for discovering Earth-like planets.

Paper Details

Date Published: 9 August 2016
PDF: 20 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99086P (9 August 2016); doi: 10.1117/12.2232761
Show Author Affiliations
Samuel Halverson, The Pennsylvania State Univ. (United States)
Ryan Terrien, The Pennsylvania State Univ. (United States)
National Institute of Standards and Technology (United States)
Suvrath Mahadevan, The Pennsylvania State Univ. (United States)
Arpita Roy, The Pennsylvania State Univ. (United States)
Chad Bender, The Pennsylvania State Univ. (United States)
Gudmundur Kári Stefánsson, The Pennsylvania State Univ. (United States)
Andrew Monson, The Pennsylvania State Univ. (United States)
Eric Levi, The Pennsylvania State Univ. (United States)
Fred Hearty, The Pennsylvania State Univ. (United States)
Cullen Blake, Univ. of Pennsylvania (United States)
Michael McElwain, NASA Goddard Space Flight Ctr. (United States)
Christian Schwab, Macquarie Univ. (Australia)
Lawrence Ramsey, The Pennsylvania State Univ. (United States)
Jason Wright, The Pennsylvania State Univ. (United States)
Sharon Wang, The Pennsylvania State Univ. (United States)
Qian Gong, NASA Goddard Space Flight Ctr. (United States)
Paul Roberston, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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