A deep BV photometric analysis of a background field in Virgo

Details A deep BV photometric analysis of a background field in Virgo A deep BV photometric analysis of a background field in Virgo

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86...90h&link_type=abstract

Astronomical Journal, vol. 86, Jan. 1981, p. 90-97. Research supported by the Natural Sciences and Engineering Research Council

Astronomy and Astrophysics

Astronomy

19

Astronomical Photometry, Background Radiation, Luminous Intensity, Virgo Galactic Cluster, Visual Photometry, Color, Color-Magnitude Diagram, Elliptical Galaxies, Globular Clusters, Interstellar Extinction, Magnitude, Ubv Spectra

Scientific paper

A deep color-magnitude analysis is presented for a background field within the Virgo Cluster located roughly halfway between M87 and M49 and chosen explicitly to be at least 2 deg away from any of the larger Virgo member galaxies. Luminosity functions in B and V and a color-magnitude diagram for an area of 80 sq arcmin are derived and briefly discussed. It is found that for V greater than 20 and B greater than 21, the integral luminosity function is dominated by faint galaxies and has a slope of 0.4. Most of the galaxies are red (B - V greater than 1.0) but a definite 'blue' component (B - V less than 0.4) appears for V greater than 22.

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