M101. Lupton, SDSS.

M109. Lupton, SDSS.

NGC 4643. Lupton, SDSS.

NGC 5866. Lupton, SDSS.

M87. Lupton, SDSS.

BM98 Table 4.1.

Hubble classification sequence. van den Bergh (1998).

Luminosity vs Hubble type for SA galaxies. van den Bergh (1998).

Classification vs absolute magnitude. van den Bergh (1998).

de Vaucouleurs classification of spirals. Sandage (1975).

de Vaucouleurs classification volume. van den Bergh (1998).

Galaxy spectra. SG07 fig 5.24 (top), fig 6.17 (bottom).

Galaxy color vs Hubble type. SG07 fig 5.25.

Hubble type vs. Yerkes type. van den Bergh (1998)

Perseus Cluster. Lupton, SDSS.

Hercules Cluster. Lupton, SDSS.

HCG 87. STScI.

Galaxy types vs distance from cluster center (left) and local surface density (right). BM98 fig4.10.

The Local Group. Richard Powell.

SG07 Table 4.1.

Image classification parameters. Conselice (2003).

1996ApJS..107....1A

1996ApJS..107....1A

Automatic classification of galaxies using A and C parameters: local sample (left), MDS sample (right). Abraham et al. (1996).

Automatic galaxy classification. Lotz et al. (2004).

Automatic galaxy classification. Lotz et al. (2004).

Automatic classification of normal galaxies (left) and IR-selected ULIRGs (right). Lotz et al. (2004).