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A PHOTOMETRIC SYSTEM FOR LIMITING JF PHOTOGRAPHY. II. SECONDARY SEQUENCES NEAR 14 RICH CLUSTERS OF GALAXIES

WARRICK J. COUCH and E. B. NEWELL
Publications of the Astronomical Society of the Pacific
Vol. 94, No. 559 (June 1982), pp. 610-617
Stable URL: http://www.jstor.org/stable/40678003
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A PHOTOMETRIC SYSTEM FOR LIMITING JF PHOTOGRAPHY. II. SECONDARY SEQUENCES NEAR 14 RICH CLUSTERS OF GALAXIES
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Abstract

We present observations that define 14 secondary sequences on the photoelectric JF system of Couch and Newell (1980). In addition to their main role of providing calibration sequences for photometry in 14 distant clusters of galaxies, these observations extend the JF system to fainter magnitudes and make it accessible to Northern Hemisphere observers.

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