Optical spectroscopy of the emission-line gas in the center of A 1795

Details Optical spectroscopy of the emission-line gas in the center of A 1795 Optical spectroscopy of the emission-line gas in the center of A 1795

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270...60a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 60-70.

Astronomy and Astrophysics

Astrophysics

6

Cooling Flows (Astrophysics), Cosmic Gases, Emission Spectra, Galactic Clusters, Intergalactic Media, Visible Spectrum, Astronomical Spectroscopy, Line Spectra

Scientific paper

No evidence for a rotating disk is found along any position angle in the central portion of the nebula, in the present deep, long-slit spectrograms of medium spectral and spatial resolution for the emission line gas in the central cD galaxy of A 1785. Both the spatial variations of the emission-line profiles and the corresponding kinematics along the various position angles clearly indicate an emission-line nebular composition of kinematically separated gas clumps; these can be seen in projection along the line-of sight. The intensities of the forbidden lines, relative to the Balmer lines, are higher in the central nebula and the bright northern knot than in the southern filament.

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