I review galaxy number count models and present ncmod, an extendable and general purpose model for comparing and interpreting the results of field galaxy survey data. I develop techniques and software for converting the results of a survey done in one filter into another filter, for direct comparison with other surveys. Comparison of the data from surveys which differ greatly in wavelength coverage or sensitivity is of necessity model-dependent, but comparison between similar surveys can be done in a relatively model-independent way. I extrapolate existing number counts into the ultraviolet and thermal infrared. The model is used to predict the results of future space missions, including STIS and NICMOS on HST, ISO, SIRTF and NGST.
Cite
@article{arxiv.astro-ph/9802037,
title = {An Extendable Galaxy Number Count Model},
author = {Jonathan P. Gardner},
journal= {arXiv preprint arXiv:astro-ph/9802037},
year = {2009}
}
Comments
36 pages, LaTex, 13 enclosed Postscript figures, aaspp4.sty. Accepted for publication in the PASP, March 1998. The manuscript and software are available at http://hires.gsfc.nasa.gov/~gardner/ncmod