Gradients of excitation in the nuclei of starburst galaxies

Bibcode
1989Ap&SS.157..165M
DOI
10.1007/BF00637324
Munoz-Tunon, C.; Vilchez, J. M.; Castaneda, H. O.; Beckman, J. E.
Referencia bibliográfica

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Phenomena in Galaxies, Puerto de la Cruz, Spain, July 4-15, 1988) Astrophysics and Space Science (ISSN 0004-640X), vol. 157, no. 1-2, July 1989, p. 165-171.

Fecha de publicación:
7
1989
Número de autores
4
Número de autores del IAC
0
Número de citas
8
Número de citas referidas
8
Descripción
The use of long-slit spectroscopy at high spectral and spatial resolution has made it possible to measure gradients of gaseous excitation and also velocity fields in a sample of four bright nuclear starburst galaxies selected from the sample of Balzano (1983). Variations are found not only in the intensity but also in the quality of the emission spectra (line ratios and line widths) of the interstellar gas between regions separated by relatively short distances. The need is stressed for studies with at least the present degree of angular and spectral resolution if physical sense is to be made of the interstellar excitation regimes in external galaxies, as well as to investigate a possible evolutionary link between nuclei of intermediate activity.
Tipo
Sin árbitro
Formación estelar
Galaxias con estallidos
Galaxias activas
Galaxias espirales

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