Spatially-resolved far-UV properties of disk galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Stellar Content And Populations, Radii, Morphology And Overall Structure, Ultraviolet

Scientific paper

The Ultraviolet Imaging Telescope (UIT) has returned the first significant sample of ultraviolet imagery of galaxies combining a large field-of-view and spatial resolution comparable to ground-based observatories. During the Astro Spacelab missions, UIT obtained spatially-resolved far-UV (λλ 1500 Å) imagery of ~35 disk galaxies. We have utilized the FUV light profiles and morphology to characterize the high-mass stellar populations in these systems. A variety of radial light profiles are found, including two systems, NGC 4214 and NGC 3310, which exhibit R1/4 profiles produced by their Population I stellar components.

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