Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..103a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 1, p. 103-107.
Astronomy and Astrophysics
Astronomy
13
Elliptical Galaxies, Galactic Structure, Ultraviolet Astronomy, Ultraviolet Spectra, Astronomical Models, Iue, Spectral Energy Distribution, Star Formation, Starburst Galaxies
Scientific paper
Four UV full-shift spectra secured with the IUE satellite have been used to test the accretion scenario for the still unexplored class of the 'narrow' polar ring (PR) galaxies. The UV energy distribution in the 1200-3300 A range for the 'prototype' of this class, the system AM 2020-504, is found to be different from the UV emission of a standard E galaxy and to show evidence for a burst of star formation. A model of a star burst occurring in an elliptical galaxy is proposed to account for the spectral energy distribution and the observed colors; we find a lower limit of 1.5 x 10 exp 8 yr to the age of the PR in AM 2020-504 and we estimate that the mass involved in the star burst is 4 x 10 exp 8 solar masses.
Arnaboldi Magda
Barbaro Guido
Buson Lucio
Capaccioli Massimo
Longo Giuseppe
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