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Precise Near-Infrared Radial Velocities

  • Peter Plavchan
  • , Peter Gao
  • , Jonathan Gagne
  • , Elise Furlan
  • , Carolyn Brinkworth
  • , Michael Bottom
  • , Angelle Tanner
  • , Guillem Anglada-Escude
  • , Russel White
  • , Cassy Davison
  • , Sean Mills
  • , Chas Beichman
  • , John Asher Johnson
  • , David Ciardi
  • , Kent Wallace
  • , Bertrand Mennesson
  • , Gautam Vasisht
  • , Lisa Prato
  • , Stephen Kane
  • , Sam Crawford
  • Tim Crawford, Keeyoon Sung, Brian Drouin, Sean Lin, Stephanie Leifer, Joe Catanzarite, Todd Henry, Kaspar Von Braun, Bernie Walp, Claire Geneser, Nick Ogden, Andrew Stufflebeam, Garrett Pohl, Joe Regan
  • Missouri State University
  • California Institute of Technology
  • University of Montreal
  • NASA Exoplanet Science Institute
  • National Center for Atmospheric Research
  • Mississippi State University
  • University College London
  • Georgia State University
  • The University of Chicago
  • Jet Propulsion Laboratory, California Institute of Technology
  • Lowell Observatory
  • San Francisco State University
  • SETI Institute
  • NASA Ames Research Center

Research output: Contribution to journalArticlepeer-review

Abstract

We present the results of two 2.3 μm near-infrared (NIR) radial velocity (RV) surveys to detect exoplanets around 36 nearby and young M dwarfs. We use the CSHELL spectrograph (R ∼ 46,000) at the NASA InfraRed Telescope Facility (IRTF), combined with an isotopic methane absorption gas cell for common optical path relative wavelength calibration. We have developed a sophisticated RV forward modeling code that accounts for fringing and other instrumental artifacts present in the spectra. With a spectral grasp of only 5 nm, we are able to reach long-term radial velocity dispersions of ∼20-30 m s-1 on our survey targets.

Original languageEnglish
Pages (from-to)286-287
Number of pages2
JournalProceedings of the International Astronomical Union
Volume10
DOIs
StatePublished - 2015
Externally publishedYes

Keywords

  • instrumentation: spectrographs
  • techniques: radial velocities

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