Isolated galaxies in SDSS DR1
As a first step towards understanding the effect of interaction on
pair or compact groups is to identify a sample of isolated galaxies.
A simple method of identifying isolated galaxy candidates has
been applied by
Karachentseva (1973) .
She selected all galaxies in the Zwicky catalog whose nearest
neighbors, within a factor of four of the same diameter, lie further
than twenty diameters away. Then she compiled her catalog from work
with prints of the Palomar Sky Survey.
This earlier effort for identifying uniformly isolated samples is
limited to B=15 and there is no known deeper sample yet.
The goal of Sloan
Digital Sky Survey is mapping one-quarter of the entire sky and
obtaining spectra of galaxies, quasars and stars. On April 8 2003, the
first major SDSS Data Release ( SDSS DR1 ) was made public to the
I used Karachentseva (1973) on the SDSS DR1 data and
identified 2980 isolated galaxy candidates also see Table (1) .
The paper is available here>.
Last modified: Thu Jun 24 17:25:33 CDT 2004