First planet confirmation with a dispersed fixed-delay interferometer

J. C. Van Eyken, J. Ge, Suvrath Mahadevan, C. Dewitt

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The Exoplanet Tracker is a prototype of a new type of fiber-fed instrument for performing high-precision relative Doppler measurements to detect extrasolar planets. A combination of Michelson interferometer and medium-resolution spectrograph, this low-cost instrument facilitates radial velocity measurements with high throughput over a small bandwidth (∼300 Å) and has the potential to be designed for multiobject operation with moderate bandwidths (∼1000 Å). We present the first planet detection with this new type of instrument, a successful confirmation of the well-established planetary companion to 51 Peg, showing an rms precision of 11. 5 m s-1 over 5 days. We also show comparison measurements of the radial velocity stable star, η Cas, showing an rms precision of 7.9 m s -1 over 7 days. These new results are starting to approach the precision levels obtained with traditional radial velocity techniques based on cross-dispersed echelles. We anticipate that this new technique could have an important impact in the search for extrasolar planets.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume600
Issue number1 II
StatePublished - Jan 1 2004

Fingerprint

interferometer
planets
extrasolar planets
planet
interferometers
radial velocity
planet detection
bandwidth
Michelson interferometers
velocity measurement
spectrographs
prototypes
stars
fibers
cost

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Van Eyken, J. C. ; Ge, J. ; Mahadevan, Suvrath ; Dewitt, C. / First planet confirmation with a dispersed fixed-delay interferometer. In: Astrophysical Journal. 2004 ; Vol. 600, No. 1 II.
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First planet confirmation with a dispersed fixed-delay interferometer. / Van Eyken, J. C.; Ge, J.; Mahadevan, Suvrath; Dewitt, C.

In: Astrophysical Journal, Vol. 600, No. 1 II, 01.01.2004.

Research output: Contribution to journalArticle

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