Statistics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95.1629m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 95, June 1988, p. 1629-1641. Research supported by the American Astronomical Society
Statistics
11
Elliptical Galaxies, Line Spectra, Oxygen Spectra, Red Shift, Spatial Distribution, Spiral Galaxies, Irregular Galaxies, Morphology, Virgo Galactic Cluster
Scientific paper
The paper presents emission-line strengths for 394 galaxies from the field-galaxy redshift surveys of Kirshner, Oemler, and Schechter (1978) and Kirshner et al. (1983) as part of a study of the nature of field and void galaxies. These data are 95 percent complete in their coverage of the forbidden O III 5007, 4959 A emission lines. It is found that 8.8 + or - 1.5 percent of a J magnitude-limited data set have forbidden O III 5007 A emission equivalent widths greater than 10 A. There is no evidence that the spatial distribution of emission-line galaxies in each field differs from that of galaxies without emission. However, there is a significant increase in the fraction of galaxies with strong forbidden O III emission in the southern fields of the Kirshner, Oemler, and Schechter (1978) survey as compared with the other survey fields. The results are consistent with the conclusion that the fraction of galaxies with emission is larger in the Bootes void than in the general field, but tighter constraints on the void normal galaxy population are needed to improve the statistics.
Kirshner Robert P.
Moody Joseph Ward
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