Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..239e&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Nov. 1, 1985, p. 239-264. SERC-supported research.
Astronomy and Astrophysics
Astronomy
51
Galactic Clusters, Galactic Evolution, Red Shift, Spectral Energy Distribution, Charge Coupled Devices, Color, Color-Magnitude Diagram, Galactic Structure, Luminosity, Ultraviolet Spectra
Scientific paper
The authors have imaged the distant cluster 0016+16 (z = 0.54) through six intermediate-bandwidth filters ranging in wavelength from 418 to 862 nm, maintaining a photometric precision of 10 per cent to a limiting magnitude of F = 22. They find the field-subtracted colour distributions are not compatible with a single uniformly red population of early-type members at z = 0.54. They demonstrate how their six-colour data can be used to individually classify the galaxies by type and approximate redshift and thus they can identify which objects are members of the z = 0.54 cluster. On this basis they determine that the richness of the cluster is comparable to that of the Coma cluster.
Couch Warrick J.
Ellis Richard S.
Koo David C.
MacLaren Ian
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