Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052

Details Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052 Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...131..159p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 131, no. 1, Feb. 1984, p. 159-168.

Astronomy and Astrophysics

Astronomy

80

Astronomical Models, Astronomical Spectroscopy, Elliptical Galaxies, Galactic Nuclei, Photoionization, Accretion Disks, Active Galactic Nuclei, Active Galaxies, Black Body Radiation, Black Holes (Astronomy), Emission Spectra, Line Spectra, Oxygen Spectra, Ultraviolet Astronomy

Scientific paper

It is shown that the emission line spectrum produced in the active galactic nucleus and the surrounding nebulosity of the elliptical galaxy NGC 1052, which is presently the most compelling candidate for shock-heating excitation, can also be understood in terms of photoionization by a central source of radiation if (1) the ionizing continuum looks like a blackbody of temperature around 8×104K prolonged by a flat soft X-ray continuum, so that a marked break appears around 5 Ryd, and (2) the gas is strongly stratified in the unresolved nucleus, so that the lines arise from several concentric regions with the density ranging from less than 103 cm-3 to at least 107 cm-3. The photoionization hypothesis in NGC 1052 leads to specific predictions concerning (1) the line ratios in and out of the nucleus, (2) the line profiles in the nucleus and (3) the reddening of the lines by dust.

Affiliated with

Also associated with

No associations

Rating

Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoionization models of low-ionization active nuclei of galaxies - The case of NGC 1052 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1857092