Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389l..49d&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 389, April 20, 1992, p. L49-L53. Research supported by Space Tele
Astronomy and Astrophysics
Astrophysics
95
Astrometry, Elliptical Galaxies, Galactic Clusters, Galactic Evolution, Red Shift, Galactic Mass, Luminosity, Metallicity, Statistical Analysis
Scientific paper
Multivariate statistical techniques and fundamental plane fits are used here to study possible systematic differences between field ellipticals (FEs) and cluster ellipticals (CEs). The FEs show more intrinsic scatter in their properties, especially when stellar population variables are included. Pairwise correlations for the two samples are different; the correlations are systematically better for the cluster sample, meaning that ellipticals in the two samples populate their fundamental planes in different ways. Bivariate correlations are different for the two samples, implying that they have different fundamental planes. This is especially true for the correlations which include the population variables Mg2 and (B-V), which are sensitive both to the enrichment history and the storm formation history.
de Carvalho Reinaldo R.
Djorgovski Stanislav
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