Other
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..140o&link_type=abstract
NOAO Proposal ID #2000B-0140
Other
Scientific paper
Low surface brightness galaxies have been shown to numerically dominate the local (z< 0.1) galaxy population, yet their properties remain paradoxical. Many unanswered questions currently exist, such as: What is the true opacity and dust content of LSB galaxies? Do the redder LSB galaxies appear to have more neutral hydrogen than their blue counterparts? How does star formation proceed in LSB galaxies? Does, in fact, star formation occur in the absence of giant molecular clouds in these systems? Is the IMF for LSB galaxies the same as their high surface brightness (HSB) counterparts? Answering the above questions requires a having a large and varied sample of LSB galaxies with known photometric properties, and this large sample does not currently exist. To date the majority of LSB galaxy searches have been undertaken in spiral-rich regions of the sky. As a result, although the number of entries into our catalogs of known LSB galaxies has grown significantly, we have little information as to the environmental effects on the galaxies discovered. A case in point is our discovery of red LSB galaxies - as only cluster environments have been searched for red LSB galaxies, we do not know wether red LSB galaxies are unique to cluster environments or if they, like their HSB counterparts, exist in all galaxy environments. If this, and the numerous other questions concerning the properties and evolution of LSB galaxies are to be answered, it is clear additional surveys are needed. We therefore propose to undertake a multicolor (U, B, V, I) survey of 20 degrees^2 in a galaxy-poor region of the southern sky. Towards this end we request a total of 54 hours observation time (6 nights) on the CTIO 0.6m telescope with the 2K CCD.
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