Description:

Our goal is to tie in the counts of nearby galaxies to those of more distant galaxies as a function of morphological type. We are currently using ground based data to fill in the brighter end (16 < B < 20 mag). The ground based data comes from our own archives, as well as some data that is publicly available on the WWW. In particular, we have obtained ~1 square degree of data from  NOAO Deep Wide-Field Survey¹ which was made available in January, 2001.
 

Our preliminary morphological galaxy counts are given below

The yellow region is the part of parameter space that we are trying to fill in. The new data is shown by the red circles and is very preliminary (we have only attempted to classify galaxies down to B~19.0 mag - the NDWFS data goes much deeper than this but seeing imposes a classification limit). The blue circles are from  Cohen et al. 2001 (Paper 1 ). The faint galaxies (and all the models) are from the Hubble Deep Field (triangles) and the deep 53W002 field (open circles) ( Odewahn et al. 1996  APJL 472 130).  It is clear that we are still suffering from small number statistics and that more data would be beneficial.
 

¹ "This work made use of images and/or data products provided by the NOAO Deep Wide-Field Survey (Jannuzi and Dey 1999), which is supported by the National Optical Astronomy Observatory (NOAO). NOAO is operated by AURA, Inc., under a cooperative agreement with the National Science Foundation."