Chandra Survey of Nearby Galaxies: an Extended Catalog
  She et al. (Paper I) assembled a catalog of nearby galaxies observed with the
Chandra X-ray observatory, by cross-matching galaxies in the NASA Extragalactic
Database (NED) within 50 Mpc and the Chandra archive. That sample has enabled
searches of low-mass black holes associated with late-type, bulgeless galaxies
and studies of the accretion physics related to low-luminosity active galactic
nuclei (LLAGNs). Using a similar approach, here we construct an extended
catalog up to 150 Mpc and make a cross-correlation with a catalog of nearby
galaxy groups. The new catalog consists of 1,964 galaxies, out of which 1,692
have a redshift independent distance, 1,557 are listed in the galaxy group
catalog with group properties available, and 782 are identified to be X-ray AGN
candidates. Compared with the AGN sample in Paper I, the new sample is 2.5
times larger in size (782 vs. 314), with ~80% of the new members having an
Eddington ratio less than 10^-4. We confirm that the conclusions based on the
previous sample remain. With the new sample, we compare AGN fractions between
early-type and late-type galaxies, and between central and satellite galaxies
in groups, and find no significant difference. This suggests that the secular
process is not the dominant mechanism feeding AGNs in the local universe.
