Velocity fields in late-type galaxies from H-alpha Fabry-Perot interferometry. I - Instrumentation and data reduction

Details Velocity fields in late-type galaxies from H-alpha Fabry-Perot interferometry. I - Instrumentation and data reduction Velocity fields in late-type galaxies from H-alpha Fabry-Perot interferometry. I - Instrumentation and data reduction

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242...18d&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Nov. 15, 1980, p. 18-29. Research supported by the University of Texas

Astronomy and Astrophysics

Astrophysics

18

Astrometry, Data Reduction, Fabry-Perot Interferometers, Galactic Evolution, Galactic Rotation, Velocity Distribution, Astronomical Maps, Astronomical Photography, Error Analysis, High Resolution, Spectrographs

Scientific paper

An image-tube H-alpha Fabry-Perot interferometer used for the mapping of velocity fields in late-type galaxies with the Galaxymeter at McDonald Observatory is described. The semiautomated method of reduction leading to the construction of detailed velocity maps at 4 to 10 arcsec resolution from 500 to 5000 velocities per galaxy is outlined. Accidental and systematic errors are discussed.

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