LINERs and their Physical Mechanisms

Details LINERs and their Physical Mechanisms LINERs and their Physical Mechanisms

2003-07-08

arxiv.org/abs/astro-ph/0307137v1

Astronomy and Astrophysics

Astrophysics

Filippenko, A. V. 2003, to appear in "Active Galactic Nuclei: From Central Engine to Host Galaxy," ed. S. Collin, F. Combes, a

Scientific paper

I review the basic properties of low-ionization nuclear emission-line regions (LINERs), as well as the main ionization mechanisms thus far proposed for them. There is substantial heterogeneity among LINERs, especially those with extended kpc-scale emission. An extensive survey by Ho, Filippenko, & Sargent quantifies with unprecedented accuracy the optical emission-line intensity ratios in the nuclei of a complete sample of 486 nearby, bright galaxies. Over 40% of all early-type galaxies in the sample can be classified as LINERs or LINER/H II transition objects. A nonstellar continuum is detected in many LINERs, suggesting that they are genuine AGNs powered by accretion onto a compact object. Broad H alpha emission similar to that of Seyfert 1 nuclei is seen in many LINERs. In some LINERs, the broad H alpha emission has two well-separated peaks, probably indicative of an accretion disk.

Affiliated with

Also associated with

No associations

Rating

LINERs and their Physical Mechanisms 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 LINERs and their Physical Mechanisms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LINERs and their Physical Mechanisms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-9907