Observations of extended and counterrotating disks of ionized gas in S0 galaxies

Details Observations of extended and counterrotating disks of ionized gas in S0 galaxies Observations of extended and counterrotating disks of ionized gas in S0 galaxies

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..246d&link_type=abstract

In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 246-248 (SEE N91-

Physics

Cosmic Gases, Counter Rotation, Emission Spectra, Galaxies, Ionized Gases, Line Spectra, Rotating Disks, Charge Coupled Devices, Spectroscopy, Star Formation

Scientific paper

While many E/S0 galaxies have been found to show emission line spectra in their nuclear regions, the question of the presence and nature of extended disks of ionized gas in these galaxies has been addressed only in recent years. Typically the ionized gas is detected in the inner region on a scale of approx. 1 kpc (e.g., Phillips et al. 1986, Caldwell 1984). Here researchers present evidence that the disks of ionized gas of at least some S0 galaxies are much more extended than previously believed. In addition, with the detection of the counterrotation of gas and stars in NGC 7007 they strengthen the basis for arguments that the source of gas in S0 galaxies is external

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