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 CrawfordTim 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

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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