Evidence for large-scale winds from starburst galaxies. I - The nature of the ionized gas in M82 and NGC 253

Details Evidence for large-scale winds from starburst galaxies. I - The nature of the ionized gas in M82 and NGC 253 Evidence for large-scale winds from starburst galaxies. I - The nature of the ionized gas in M82 and NGC 253

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..264m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, Feb. 1987, p. 264-275. Research supported by the Alfred P. Sloan Foundation and

Astronomy and Astrophysics

Astronomy

172

Astronomical Spectroscopy, Galactic Evolution, Infrared Spectra, Ionized Gases, Star Formation, Starburst Galaxies, Stellar Winds, Emission Spectra, Far Infrared Radiation, Gas Temperature, Line Spectra, Shock Waves, Visible Spectrum

Scientific paper

The authors present images and long-slit spectroscopic CCD observations of the ionized gas in M82 and NGC 253, the two nearest examples of far-infrared (FIR) luminous galaxies believed to be undergoing intense bursts of star formation. In addition to bright line emission from their central-starburst regions, extensive regions of ionized gas also exist along their minor axes. The high-latitude ionized gas in NGC 253 appears to coexist with diffuse soft X-ray emission as in the case of M82. From their long-slit spectra of M82 the authors derive P(r), the radial variation in the pressure of the high-latitude warm (104K) gas. The form of P(r) agrees well with the Chevalier and Clegg (1985) model of a powerful wind emanating from the starburst region.

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