Astronomy and Astrophysics – Astrophysics
Scientific paper
1994-10-05
Astrophys.J. 442 (1995) 457
Astronomy and Astrophysics
Astrophysics
accepted by The Astrophysical Journal, 26 September 1994; 30 pages, uuencoded compressed postscript, includes 9 figures; updat
Scientific paper
10.1086/175453
We present clustering measurements for samples of galaxies selected by morphological type and luminosity from the recently completed Stromlo-APM Redshift Survey. Early type galaxies are clustered more strongly by a factor 3.5--5.5, than late type galaxies. Low-luminosity galaxies are clustered more weakly by a factor of $\sim 2$ than $L^*$ and brighter galaxies on scales $\simgt 1\hMpc$. Also the slope of the correlation function is steeper for low-luminosity galaxies, so that the amplitude is a factor 4 lower at $ 10 \hMpc$. No difference, however, is seen between the clustering of $L^*$ and more luminous galaxies, an observation which may be hard to reconcile with some theories of biased galaxy formation. Both redshift-space and real-space clustering estimates show a similar dependence on luminosity.
Efstathiou George
Loveday Jon
Maddox Steve J.
Peterson Bruce A.
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