Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

HIRES

  • David W. Latham
  • Nader Haghighipour
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_727-5

Synonyms

Definition

HIRES (High Resolution Echelle Spectrometer) is a high-resolution spectrograph on the Keck I telescope in Hawaii. It was originally designed as a general-purpose instrument, but one of its main applications has been the determination of radial-velocity orbits for stars hosting exoplanets in order to derive planetary masses. Because the input is a slit, an iodine gas absorption cell is introduced into the stellar beam in order to calibrate the instrumental profile and wavelength scale of each stellar observation. The data analysis requires also a high-quality template observation of each star without the iodine and a fundamental calibration of the spectrum of the absorption cell at very high spectral resolution. HIRES has achieved a performance approaching velocities as low as 1 m/s. HIRES has contributed to the discovery of several hundred extrasolar planets including the first super-Earth, GJ 876 d, several potentially habitable...

Keywords

Absorption Cell Spectral Resolution Main Application High Spectral Resolution Extrasolar Planet 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Harvard-Smithsonian Center for AstrophysicsCambridgeUSA
  2. 2.Institute for Astronomy, University of Hawaii, University of Hawaii-ManoaHonoluluUSA