Long slit spectroscopy of the nuclear zone of NGC 253

Details Long slit spectroscopy of the nuclear zone of NGC 253 Long slit spectroscopy of the nuclear zone of NGC 253

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.170..315m&link_type=abstract

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640

Astronomy and Astrophysics

Astrophysics

1

Astronomical Spectroscopy, Galactic Nuclei, High Resolution, Ionized Gases, Star Formation, Emission Spectra, H Alpha Line, H Ii Regions, Nitrogen, Photoionization, Pixels

Scientific paper

A study has been undertaken of the physical conditions of the ionized gas within the starburst region of the galaxy NGC 253, using long slit spectroscopy at high spatial and spectral resolution. The aim was to identify the appropriate parameters describing the dynamics of the gas and the excitation conditions, in relation with the starburst process. Non-Gaussian line profiles and line splitting are clearly observed, indicating a complicated dynamical structure; furthermore, the zones presenting noncircular motions and localized outflow of gas have been spatially sampled at the seeing limit.

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