Bibcode
Hoversten, Erik A.; Berrier, J.; Conroy, C.; Gronwall, C.
Referencia bibliográfica
American Astronomical Society, AAS Meeting #219, #415.03
Fecha de publicación:
1
2012
Número de citas
0
Número de citas referidas
0
Descripción
We present UVOT imaging of a sample of 25 nearby star forming galaxies.
Most of these galaxies are included in the Spitzer Infrared Nearby
Galaxies Survey (SINGS) and have been observed by Spitzer in the
Infrared as well as at optical wavelengths. We use the UVOT near
ultraviolet imaging in conjunction with ground based optical and Spitzer
infrared data to investigate the recent star formation in these galaxies
as a function of galaxy properties. Additionally, given the spectral
resolution UVOT provides in the near UV we are able to constrain the
stength of the 2175 Å dust bump in these galaxies. We investigate
variations of the bump strength as a function of the physical properties
of the galaxies, as well as spatial variations within the galaxies. In
particular we correlate the 2175 Å bump strength with polycyclic
aromatic hydrocarbon (PAH) features in the infrared to test the
hypothesis that PAHs give rise to the bump. This project was funded in
part by the NASA Astrophysics Data Analysis Program.