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Stellar spectroscopy in the near-infrared with a laser frequency comb

Metcalf, Andrew J. and Roy, Arpita (2019) Stellar spectroscopy in the near-infrared with a laser frequency comb. Optica, 6 (2). pp. 233-239. ISSN 2334-2536.

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The discovery and characterization of exoplanets around nearby stars are driven by profound scientific questions about the uniqueness of Earth and our solar system, and the conditions under which life could exist elsewhere in our galaxy. Doppler spectroscopy, or the radial velocity (RV) technique, has been used extensively to identify hundreds of exoplanets, but with notable challenges in detecting terrestrial mass planets orbiting within habitable zones. We describe infrared RV spectroscopy at the 10 m Hobby–Eberly Telescope that leverages a 30 GHz electro-optic laser frequency comb with a nanophotonic supercontinuum to calibrate the Habitable Zone Planet Finder spectrograph. Demonstrated instrument precision <10  cm/s and stellar RVs approaching 1 m/s open the path to discovery and confirmation of habitable-zone planets around M-dwarfs, the most ubiquitous type of stars in our galaxy.

Item Type:Article
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URLURL TypeDescription Paper
Metcalf, Andrew J.0000-0001-5000-1018
Roy, Arpita0000-0001-8127-5775
Additional Information:© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 9 October 2018; revised 23 January 2019; accepted 28 January 2019 (Doc. ID 347824); published 20 February 2019. We thank the three anonymous reviewers for comments and suggestions that have improved the quality of this work. We thank Zach Newman for his comments on this manuscript and Ian Coddington for his contributions to the development of the laser frequency comb. We thank the HET staff for their critical assistance, expertise, and support. This work would not be possible without them. We are very grateful for help and support from Gary Hill, Hansin Lee, Brian Vattiat, and Phillip McQueen. Data presented herein were obtained at the HET, a joint project of the University of Texas at Austin, the Pennsylvania State University, Ludwig-Maximilians-Universität München, and Georg-August Universität Gottingen. The HET is named in honor of its principal benefactors, William P. Hobby and Robert E. Eberly. The HET collaboration acknowledges the support and resources from the Texas Advanced Computing Center. Computations for this research were performed on the Pennsylvania State University’s Institute for CyberScience Advanced CyberInfrastructure (ICS-ACI). Funding: National Science Foundation (NSF) (AST-100667, AST-1126413, AST-1310875, AST-1310885); National Institute of Standards and Technology (NIST) (On-a-Chip Program); National Aeronautics and Space Administration (NASA) (NNX09AB34G); Pennsylvania State University and its Center for Exoplanets and Habitable Worlds; National Aeronautics and Space Administration (NASA) (NNX16A028H, Sagan Fellowship); Heising-Simons Foundation (2017-0494).
Funding AgencyGrant Number
National Institute of Standards and Technology (NIST)UNSPECIFIED
Pennsylvania State UniversityUNSPECIFIED
Center for Exoplanets and Habitable WorldsUNSPECIFIED
NASA Sagan FellowshipNNX16A028H
Heising-Simons Foundation2017-0494
Record Number:CaltechAUTHORS:20190313-160738989
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Official Citation:Andrew J. Metcalf, Tyler Anderson, Chad F. Bender, Scott Blakeslee, Wesley Brand, David R. Carlson, William D. Cochran, Scott A. Diddams, Michael Endl, Connor Fredrick, Sam Halverson, Daniel D. Hickstein, Fred Hearty, Jeff Jennings, Shubham Kanodia, Kyle F. Kaplan, Eric Levi, Emily Lubar, Suvrath Mahadevan, Andrew Monson, Joe P. Ninan, Colin Nitroy, Steve Osterman, Scott B. Papp, Franklyn Quinlan, Larry Ramsey, Paul Robertson, Arpita Roy, Christian Schwab, Steinn Sigurdsson, Kartik Srinivasan, Gudmundur Stefansson, David A. Sterner, Ryan Terrien, Alex Wolszczan, Jason T. Wright, and Gabriel Ycas, "Stellar spectroscopy in the near-infrared with a laser frequency comb," Optica 6, 233-239 (2019)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93793
Deposited By: George Porter
Deposited On:13 Mar 2019 23:24
Last Modified:13 Mar 2019 23:24

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