HST/WFPC2 images resolve NGC 7673 into a large number of star clusters. Among these, 31 fall inside the IUE large aperture, which was used to acquire an integrated ultraviolet spectrum of the galaxy. We have fitted Starburst99 evolutionary synthesis models to the observed colours of these clusters and derived ages, reddenings, and masses of the clusters. Then a simple sum of the clusters synthetic UV spectra was compared to the observed IUE spectrum, in order to investigate the star-formation history of NGC 7673.
A multi-wavelength study of the starburst galaxy NGC 7673
BENVENUTI, PIERO
2005
Abstract
HST/WFPC2 images resolve NGC 7673 into a large number of star clusters. Among these, 31 fall inside the IUE large aperture, which was used to acquire an integrated ultraviolet spectrum of the galaxy. We have fitted Starburst99 evolutionary synthesis models to the observed colours of these clusters and derived ages, reddenings, and masses of the clusters. Then a simple sum of the clusters synthetic UV spectra was compared to the observed IUE spectrum, in order to investigate the star-formation history of NGC 7673.File in questo prodotto:
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