Search for planets by spectroscopic methodsSpectroscopic means of detecting the motion of a star around a star-planet barycenter are considered. The precision of such an observation, which requires a radial velocity error of not more than 5 m/sec, is discussed in relation to the spectral resolutions of the detectors utilized. The University of Arizona radial velocity spectrometer is then presented, with particular attention given to the location of the absorption cell in a beam of light from an incandescent bulb, high-accuracy wavelength calibration involving the use of a Fabry-Perot interferometer in front of an echelle spectrograph, and future plans for the use of light reflected from a Fabry-Perot etalon to improve transmittance. On the basis of these techniques, it is expected that radial velocities with accuracies sufficient for the detection of extrasolar planets will be obtained.
Document ID
19810041231
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Serkowski, K. (Arizona, University; Steward Observatory, Tucson, Ariz., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
Astronomy
Meeting Information
Meeting: Strategies for the search for life in the universe Meeting