The connection between the bulge mass or bulge luminosity in disk galaxies and the number , spatial and phase space distribution of associated dwarf galaxies is a discriminator between cosmological simulations related to galaxy formation in cold dark matter and generalised gravity models .
Here , a nearby sample of isolated Milky Way-class edge-on galaxies is introduced , to facilitate observational campaigns to detect the associated families of dwarf galaxies at low surface brightness .
Three galaxy pairs with at least one of the targets being edge-on are also introduced .
Approximately 60 % of the catalogued isolated galaxies contain bulges of different size , while the remaining objects appear to be bulgeless .
Deep images of NGC 3669 ( small bulge , with NGC 3625 at the edge of the image ) and NGC 7814 ( prominent bulge ) , obtained with a 0.4-m aperture , are also presented , resulting in the discovery of two new dwarf galaxy candidates , NGC 3669–DGSAT–3 and NGC 7814–DGSAT–7 .
Eleven additional low surface brightness galaxies are identified , previously notified with low quality measurement flags in the Sloan Digital Sky Survey ( SDSS ) .
Integrated magnitudes , surface brightnesses , effective radii , Sersic indices , axis ratios , and projected distances to their putative major hosts are displayed .
At least one of the galaxies , NGC 3625–DGSAT–4 , belongs with a surface brightness of \mu _ { r } \approx 26 mag arcsec ^ { -2 } and effective radius > 1.5 kpc to the class of ultra-diffuse galaxies ( UDGs ) .
NGC 3669–DGSAT–3 , the galaxy with the lowest surface brightness in our sample , may also be an UDG .