Galaxy groups - Virial quantities and galaxy population

Details Galaxy groups - Virial quantities and galaxy population Galaxy groups - Virial quantities and galaxy population

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...143..188m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 143, no. 1, Feb. 1985, p. 188-193. Research supported by the Consiglio Naziona

Astronomy and Astrophysics

Astrophysics

22

Cosmology, Galactic Clusters, Galactic Structure, Distribution Functions, Elliptical Galaxies, Luminosity, Spiral Galaxies, Virial Theorem

Scientific paper

Some statistical properties of the galaxy groups identified by Geller and Huchra (1983) have been examined, taking into account contamination and incompleteness in luminosity. Different weighting procedures do not significantly affect the mass-to-light ratio whose median turns out to be about 400 M_sun;/L_sun; (H0 = 100 km s-1Mpc-1). On the other hand, virial radii are affected by weighting; this fact, together with the behaviour of the mean pairwise separation among spirals and ellipticals and/or lenticulars, gives evidence of morphological segregation.

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