Dust lanes causing structure in the extended narrow-line region of early-type seyfert galaxies

A. C. Quillen, A. Alonso-Herrero, Marcia J Rieke, Colleen McDonald, Heino Falcke, George H. Rieke

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21 Scopus citations

Abstract

We construct near-infrared to visible broadband NICMOS/WFPC color maps for four early-type Seyfert galaxies with S-shaped or one-sided ionization cones. We find that dust lanes are near or connected to many of the features seen in the [O III] and Hα + [N II] line emission maps. This suggests that much of the structure of line emission in these ionization cones is determined by the distribution of ambient dense galactic gas. Spiral arms, dust lanes caused by bars, or gaseous warps provide dense gas, which when illuminated by a conical beam of ultraviolet photons can result in the complicated line emission morphologies observed.

Original languageEnglish (US)
Pages (from-to)685-690
Number of pages6
JournalAstrophysical Journal
Volume525
Issue number2 PART 1
Publication statusPublished - Nov 10 1999

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Keywords

  • Galaxies: active
  • Galaxies: ISM
  • Galaxies: seyfert
  • Galaxies: structure
  • Infrared: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Quillen, A. C., Alonso-Herrero, A., Rieke, M. J., McDonald, C., Falcke, H., & Rieke, G. H. (1999). Dust lanes causing structure in the extended narrow-line region of early-type seyfert galaxies. Astrophysical Journal, 525(2 PART 1), 685-690.