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THE ULTRAVIOLET/OPTICAL TELESCOPE (UVOT) ON THE NEIL GEHRELS SWIFT OBSERVATORY HAS BEEN USED FOR AN ENORMOUS VARIETY OF SCIENCE TOPICS BEYOND ITS ORIGINAL PURPOSE OF DETECTING GAMMA RAY BURSTS. AS WE HAVE USED IT TO ANALYZE NEARBY GALAXIES WE HAVE DETERMINED THAT THE CALIBRATION IS INSUFFICIENT TO ACCURATELY MEASURE THE BRIGHTNESS OF THESE EXTENDED SOURCES. WE WILL THEREFORE USE EXISTING UVOT DATA TO IMPROVE THE CALIBRATION AND APPLY IT TO THE SOLV (SWIFT OBSERVATIONS OF THE LOCAL VOLUME) SURVEY WHICH IS IMAGING 465 LOCAL GALAXIES. THE NEWLY-CALIBRATED UVOT DATA WHEN COMBINED WITH ARCHIVAL IMAGING WILL ALLOW US TO MODEL THE SPECTRAL ENERGY DISTRIBUTIONS OF EACH GALAXY REVEALING INFORMATION INCLUDING THEIR STELLAR MASSES STAR FORMATION HISTORY AND THE SHAPE OF THEIR DUST ATTENUATION CURVE. THIS INFORMATION WILL CONTRIBUTE TO OUR UNDERSTANDING OF THE FORMATION AND EVOLUTION OF DWARF GALAXIES WHICH IN TURN WILL INFORM THEORIES FOR THE GROWTH OF STRUCTURE AT SMALL SCALES. THIS ADDRESSES THE NASA SCIENCE MISSION DIRECTORATE BIG QUESTION "HOW DID WE GET HERE?" WHICH SEEKS TO UNDERSTAND HOW THE UNIVERSE TRANSITIONED FROM THE BIG BANG TO THE PLANETS STARS AND GALAXIES WE SEE TODAY.

$77,494FY2020National Aeronautics and Space AdministrationNASA

Association Of Universities For Research In Astronomy, Inc., Tucson AZ

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