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Paper: Detection of 51Peg b with a Dispersed Fixed-Delay Interferometer
Volume: 321, Extrasolar Planets: Today and Tomorrow
Page: 109
Authors: van Eyken, J.; Ge, J.; Mahadevan, S.; DeWitt, C.
Abstract: We present here successful detection of the known planetary companion to 51 Peg, using Exoplanet Tracker (ET), an instrument based on a new Doppler technique known as 'dispersed fixed-delay interferometry', at the KPNO 2.1m telescope. RMS precisions of 11.5m s−1 and 7.9m s−1 were obtained for 51 Peg and Eta Cas (a radial velocity stable star) respectively, over a period of a few days.

An improved next-generation ET is now being developed at Penn State for RV surveys which is expected to achieve a total detection efficiency in excess of 22% from above the atmosphere to the detector. In principle this kind of instrument can also been designed for multi-object observation, and could be used for cost-effective all-sky Doppler surveys, leading to a dramatic increase in current Doppler survey speeds.

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