Galaxy color vs Hubble type. SG07 fig 5.25.

UBV colors off spiral galaxies and simple models. Kennicutt (1983).

Hypothetical star formation histories for galaxies of different Hubble types. Sandage (1986).

Sb models Sc Models

Disk galaxy spectra. SG07 fig 5.24.

Integrated galaxy spectra. Kennicutt (1998a).

H alpha + [NII] equivalent widths vs. Hubble type. Kennicutt (1998a).

Star-formation rate vs. gas surface density. Kennicutt (1998b).

Multi-wavelength images of M81. Gordon et al. (2004).GALEX image of M81.

Images, spectra and rotation curves for Sc galaxies. Rubin (1983).

HI velocity map for M81. BM98 fig 8.19.

1991AJ....101.1231C

HI velocity vs major-axis position for two edge-on galaxies. Casertano & van Gorkom (1991).

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Integrated HI line profiles for four disk galaxies; two are symmetrical, two are not. BM98 fig. 8.29.

NGC 3198: image & HI contours; rotation curve. BT87 fig 10.2.

1991AJ....101.1231C

HI rotation curves & no-halo models. Casertano & van Gorkom (1991).

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Rotation curves for 28 disk galaxies; note systematic change from rising to falling with increasing luminosity. Casertano & van Gorkom (1991).

Stellar and gaseous rotation curves for NGC 7184. Gilmore, King, & van der Kruit (1989).

NGC 4826, the “Black Eye Galaxy”. HST.

Image (top) and HI position-velocity diagram for NGC 4826 (after Braun et al 1994). Schweizer (1998).

1991AJ....101.1231C

HI velocity vs major-axis position for two edge-on galaxies. Casertano & van Gorkom (1991).

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Integrated HI line profiles for four disk galaxies; two are symmetrical, two are not. BM98 fig. 8.29.

Line-width vs luminosity in B, R, I, & K for a large sample of disk galaxies. Tully & Pierce (2000).