The Edge-on Galaxy Database

The Catalog of Edge-on Disk Galaxies from SDSS (EGIS)

Examples

The catalog of true edge-on disk galaxies (Bizyaev et al., 2014) is automatically selected from the Seventh Data Release of the Sloan Digital Sky Survey (SDSS). It contains 5747 genuine edge-on galaxies after visual inspection of the g, r, i images of 14983 candidates. The initiial sample were obtained with a criterion: petroMag_g < 20 & isoA_g > 37.8 & isoA_g/isoB_g > 3 & -0.5 < dered_g - dered_r < 2 & -0.5 < dered_r - dered_r < 2 The visual inspection allows to split the initial sample on: true edge-on galaxies (4768), non-edge-ons (8350) and objects with a complex structure (1865). Since the initial automatic selection of the galaxy candidates did not include a significant number of the largest edge-on galaxies, the final version of EGIS catalog incorporates edge-on candidates by supplying objects from RFGC, RC3, EFIGI, and Galaxy Zoo that were found in the SDSS footprints.