Physics – Optics
Scientific paper
Jun 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...179..108c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 179, no. 1-2, June 1987, p. 108-114. Research supported by the Universidad Cat
Physics
Optics
25
Astronomical Spectroscopy, Fiber Optics, Galactic Clusters, Galactic Rotation, Radial Velocity, Cassegrain Optics, Charge Coupled Devices, Seyfert Galaxies
Scientific paper
This paper presents the first results obtained with the ESO multiple fiber spectroscopic facility (OPTOPUS). Radial velocities and magnitudes are given for 44 galaxies in the cluster Klemola 22. The average redshift is 16160 km s-1 and the velocity dispersion 742 km s-1. The galaxy Kle 22/17 shows strong emission lines of [O III], with a FWHM of 850 km s-1, and is classified as a type 2 Seyfert. From these observations, the average efficiency of OPTOPUS, including telescope, spectrograph and detector, is computed as 1 detected photoelectron Å-1s-1 for an object of 15 B magnitude.
Cristiani Stefano
D'Odorico Sandro
de Souza Ronaldo
Lund G.
Quintana Hernan
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