Share Email Print
cover

Proceedings Paper

Precision radial velocity spectrograph
Author(s): Hugh R. A. Jones; John Rayner; Larry Ramsey; David Henry; Bill Dent; David Montgomery; Andy Vick; Derek Ives; Ian Egan; David Lunney; Phil Rees; Adrian Webster; Chris Tinney; Mike Liu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present a conceptual design for a Precision Radial Velocity Spectrograph (PRVS) for the Gemini telescope. PRVS is a fibre fed high resolving power (R~70,000 at 2.5 pixel sampling) cryogenic echelle spectrograph operating in the near infrared (0.95 - 1.8 microns) and is designed to provide 1 m/s radial velocity measurements. We identify the various error sources to overcome in order to the required stability. We have constructed models simulating likely candidates and demonstrated the ability to recover exoplanetary RV signals in the infrared. PRVS should achieve a total RV error of around 1 m/s on a typical M6V star. We use these results as an input to a simulated 5-year survey of nearby M stars. Based on a scaling of optical results, such a survey has the sensitivity to detect several terrestrial mass planets in the habitable zone around nearby stars. PRVS will thus test theoretical planet formation models, which predict an abundance of terrestrial-mass planets around low-mass stars.We have conducted limited experiments with a brass-board instrument on the Sun in the infrared to explore real-world issues achieving better than 10 m/s precision in single 10 s exposures and better than 5 m/s when integrated across a minute of observing.

Paper Details

Date Published: 25 July 2008
PDF: 12 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140Y (25 July 2008); doi: 10.1117/12.789807
Show Author Affiliations
Hugh R. A. Jones, Ctr. for Astrophysics Research, Univ. of Hertfordshire (United Kingdom)
John Rayner, Institute for Astronomy, Univ. of Hawaii (United States)
Larry Ramsey, The Pennsylvania State Univ. (United States)
David Henry, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Bill Dent, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
David Montgomery, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Andy Vick, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Derek Ives, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Ian Egan, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
David Lunney, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Phil Rees, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Adrian Webster, Institute of Astronomy, Univ. of Edinburgh (United Kingdom)
Chris Tinney, Univ. of New South Wales (Australia)
Mike Liu, Institute for Astronomy, Univ. of Hawaii (United States)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

© SPIE. Terms of Use
Back to Top