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Attaining Doppler Precision of 10 cm s^(-1) with a Lock-in Amplified Spectrometer

Jensen-Clem, Rebecca and Muirhead, Philip S. and Bottom, Michael and Wallace, J. Kent and Vasisht, Gautam and Johnson, John Asher (2015) Attaining Doppler Precision of 10 cm s^(-1) with a Lock-in Amplified Spectrometer. Publications of the Astronomical Society of the Pacific, 127 (957). pp. 1105-1112. ISSN 0004-6280.

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We explore the radial velocity performance benefits of coupling starlight to a fast-scanning interferometer and a fast-readout spectrometer with zero readout noise. By rapidly scanning an interferometer, we can decouple wavelength calibration errors from precise radial velocity measurements, exploiting the advantages of lock-in amplification. In a Bayesian framework, we investigate the correlation between wavelength calibration errors and resulting radial velocity errors. We construct an end-to-end simulation of this approach to address the feasibility of achieving 10 cm s^(-1) radial velocity precision on a typical Sun-like star using existing, 5 m-class telescopes. We find that such a precision can be reached in a single night, opening up possibilities for ground-based detections of Earth-Sun analog systems.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Jensen-Clem, Rebecca0000-0003-0054-2953
Muirhead, Philip S.0000-0002-0638-8822
Bottom, Michael0000-0003-1341-5531
Vasisht, Gautam0000-0002-1871-6264
Johnson, John Asher0000-0001-9808-7172
Alternate Title:Attaining Doppler Precision of 10 cm s-1 with a Lock-in Amplified Spectrometer
Additional Information:© 2015 The Astronomical Society of the Pacific. Received 2014 February 11; accepted 2015 August 21; published 2015 October 21. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. P. S. M. acknowledges support for his work from the Hubble Fellowship Program, provided by NASA through Hubble Fellowship grant HST-HF-51326.01-A, awarded by the STScI, which is operated by the AURA, Inc., for NASA, under contract NAS 5-26555. P. S. M, G. V., and J. K. W. were supported by the Directors Research and Development Fund and the California Institute of Technology/Jet Propulsion Laboratory. M. B. is supported by a National Space Technology Research Fellowship. J. A. J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. We would like to thank Lynne Hillenbrand for useful discussions. J. K. W. and G. V. are supported by the Caltech-JPL President and Director’s fund.
Funding AgencyGrant Number
NSF Graduate Research FellowshipDGE-1144469
NASA Hubble FellowshipHST-HF-51326.01-A
NASANAS 5-26555
JPL Director’s Research and Development FundUNSPECIFIED
NASA Space Technology Research FellowshipUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Caltech President’s FundUNSPECIFIED
Issue or Number:957
Record Number:CaltechAUTHORS:20160307-103106574
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Official Citation:Rebecca Jensen-Clem et al 2015 PASP 127 1105
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65110
Deposited By: Tony Diaz
Deposited On:08 Mar 2016 22:16
Last Modified:09 Mar 2020 13:18

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