Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...531..665k&link_type=abstract
The Astrophysical Journal, Volume 531, Issue 2, pp. 665-675.
Astronomy and Astrophysics
Astronomy
Galaxies: Clusters: General, Galaxies: Kinematics And Dynamics, Galaxies: Photometry, Galaxies: Structure
Scientific paper
We reexamined the correlation between the BT magnitude and the phase-space-density parameter w=(D225vc)-1 of galaxies for the Virgo, the Coma, the Fornax, and the Perseus clusters in an effort to better understand the physical underpinning of the fundamental plane. A tight correlation (BT=alog w+b) common to different morphological types of galaxies (E, S0, S) was found for the Virgo and the Coma clusters, with a=1.87+/-0.10 and 1.33+/-0.11, respectively. An investigation using only E galaxies was made for the four clusters. The results indicated that the empirical linear relation might be common among the Coma, the Fornax, and the Perseus clusters, with the Virgo Cluster showing deviation. This relation, which is another way to project the fundamental plane, has an expression insensitive to the morphology and may be suitable for treating galaxies of different morphological types collectively.
Kashikawa Nobunari
Kodaira Keiichi
Misawa Toru
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