6 Notes on individual galaxies

 UGC 8215: small irregular with a relatively steep light profile. The central part shows a slight deficit compared to a pure exponential. One of the few galaxies with a slight bluing of its colours towards larger radii (but could also have a flat colour profile within the errors).

DDO 167: slightly more irregular than UGC 8215, but has identical lightprofile characteristics.

DDO 168: shows an excess in its surface brightness profiles with respect to a pure exponential at large radii as well as a deficit in the central regions. Its colour profile displays a clear flattening from the point at which the luminosity excess becomes visible in the profiles. But the error envelopes are large at those points both in the radial profiles and colour profiles. It is to be noted though that for this galaxy, the measured sky counts after subtraction were marginally negative around the galaxy. Therefore one should have seen a slight deficit in the outer parts of the brightness profiles rather than an excess, if the deviations were only due to the uncertainties.

UGCA 342: very irregular, and projected close to a bright star. At a velocity of 388 $\mathrm {km\,s}^{-1}$ it might belong to the outskirts of M63, which has a redshift of 504 $\mathrm {km\,s}^{-1}$. Indeed, UGCA342 is only 7.7' from M63, which is less than one optical diameter of M63. At a distance of $\approx 8.5$ Mpc ($H_0\approx 60$) this represents $\approx 19$ kpc in projected distance. Some diffuse features are visible in the image, especially to the south-east of UGCA342, supporting the idea that UGCA342 is some luminous condensation in the outer part of M63. An optical image with a radio map of M63, provided by Fig. 6 in Bosma (1981), confirms this idea. Note the similar velocities at the coordinates of UGCA342. The elongated shape, diffuseness, nearby bright star and background sky "structure'' made accurate photometry impossible.

DDO 169: like DDO 168, one observes similar features in the surface brightness and colour profiles. Extended "tail" towards the north. This tail seems to be slightly bluer than the rest of the galaxy.

NGC 5204: imaged in R only.

UGC 08508: slight excess in the outer regions as well as a slight deficit in the inner regions. The excess is unlikely to be real.

NGC 5229: edge on, slightly warped.

NGC 5238: shows a relatively large excess in the surface brightness profiles, as well as a flattening of its colour profile. The characteristics of the excess and the colour profile are similar to those of DDO 168.

DDO 181: imaged only in B. Pronounced brightness deficit with respect to a pure exponential in the centre.

UGC 08659: its colour profile shows a bluing with increasing radius. Irregular brighter knots.

DDO 183: slight surface brightness excess in the outer parts as well as a deficit in the inner part. Possible flattening of the colour profile.

UGC 08833: similar to DDO 167.

HO IV: the light is distributed in patches, and the surface brightness profile is almost flat in the inner regions.

UGC 08882: nucleated dwarf elliptical with a flat colour profile and a slightly blue nucleus relative to the bulk of the galaxy.

MGC 9-23-21: projected very close to a bright star, making accurate photometry very difficult. The relatively large light gradient around the galaxy more or less excludes accurate photometry of the fainter parts, especially considering the small angular size.

UGC 08914: shows a surface brighness profile that falls off faster than an exponential in the outer parts. Flat colour profile except for a red central region relative to the surrounding parts.

NGC 5474: highy asymmetrical galaxy. Too large for the field of view for accurate photometry due to sky subtracion difficulties.

NGC 5477: also shows a possible surface brightness excess in the outer parts. The colour profile on the other hand looks more usual.

DDO 190: redder central part that is slightly less bright than predicted by an exponential profile.

DDO 194: flat colour profile except for a slightly bluer nucleus.