Images in the rocket ultraviolet - The starburst in the nucleus of M83

Details Images in the rocket ultraviolet - The starburst in the nucleus of M83 Images in the rocket ultraviolet - The starburst in the nucleus of M83

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274l..53b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 274, Nov. 15, 1983, p. L53-L56.

Astronomy and Astrophysics

Astronomy

45

Astronomical Spectroscopy, Galactic Nuclei, Spaceborne Astronomy, Spiral Galaxies, Starburst Galaxies, Ultraviolet Astronomy, Iue, Rocket-Borne Instruments, Spaceborne Telescopes, Stellar Radiation, Supernovae

Scientific paper

Ultraviolet images of the SAB(s)c I-II galaxy M83 (NGC 5236) obtained with a rocketborne telescope in broad bandpasses centered at 1540 A and 2360 A show a bright resolved nuclear source which accounts for approximately 20 percent of the flux of the galaxy in both bandpasses. Low-resolution International Ultraviolet Explorer spectra of this source reveal an energy distribution similar to that of the starburst nucleus of NGC 7714. Strong blueshifted absorption lines can be interpreted as evidence for a nuclear wind powered by supernovae. Observations from UV, X-ray, optical, and far-infrared bandpasses are consistent with a starburst approximately one-sixth as strong as that in M82. A scaling of the M82 models of Rieke et al. (1980) predicts that the nucleus of M83 contains 10 to the 6th - 3 x 10 to the 7th solar masses in young stars and has a supernova rate of approximately 0.01 per yr.

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