Mathematics – Logic
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8632g&link_type=abstract
HST Proposal ID #8632
Mathematics
Logic
Hst Proposal Id #8632 Galaxies
Scientific paper
We propose a snapshot survey of local galaxies at UV wavelengths with WFPC2 and the F300W filter. The aim of the project is to build a reference UV Atlas of normal galaxies, whose optical images are well known, with the highest possible degree of information, covering all the morphological types and luminosity classes. The F300W passband is significantly bluer than the Johnson U, its transmittance is not limited by the atmosphere, and it offers adequate throughput for this project. The sample is extracted from the Revised Shapley-Ames Catalog and includes 130 galaxies with a redshift distribution centered around ~ 1500 km/sec and FWHM~ 500 km/s. At these redshifts the field-of-view of WFPC2 covers ~ 23 kpc, or approximately the Holmberg diameter of a large spiral galaxy. No systematic imaging of local galaxies at wavelengths bluer than the B band are currently available and the general properties of the various Hubble types in the UV are essentially unknown. Still, this information is crucial for a variety of studies, which include star-formation activity and evolution, nuclear activity, the physics of the ISM, the evolution of galaxy morphology. The WFPC2 UV Atlas will provide a unique reference data set which will be valuable for a wide variety of future observations, both ground--based and with HST. This project is a service to the community, and we waive the proprietary period.
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