SIMBAD references

2000ApJ...544L..31L - Astrophys. J., 544, L31-L34 (2000/November-3)

A possible evolutionary connection between active galactic nuclei and starbursts in LINERs.

LEI S.-J., HUANG J.H., ZHENG W., JI L. and GU Q.S.

Abstract (from CDS):

Our analysis of the two magnitude-limited samples of LINERs suggests a correlation between LFIR/LB, or f(25 µm)/f(60 µm), and Hubble-type index at greater than 99.99% significance level. As LFIR/LB and f(25 µm)/f(60 µm) are considered to be indicators of star formation activity and active galactic nuclei (AGN) activity, respectively, our results suggest that LINERs with higher AGN activity may have a lower star formation contribution. The ones with highest AGN activity and lowest star formation contributions are elliptical galaxies. All well-studied type 1 LINERs belong to this group. On the other hand, LINERs with higher star formation activity present lower AGN contributions. We find all well-studied type 2 LINERs in this parameter space. Most LINERs having inner ring structures belong to this group. Statistics with other indicators of star formation or AGN activity (a nuclear mass-to-light ratio at the H band and the ratio of X-ray to UV power) provide further evidence for such a trend. We have seen that along with the evolution of galaxies from late-type spiral galaxies to early-type ones and up to elliptical galaxies, the intensity of AGN activity increases with decreasing star formation contributions. The above analyses may suggest a possible connection between the host galaxies and nuclear activities, and it might also indicate a possible evolutionary connection between AGNs and starbursts in LINERs.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Evolution - Galaxies: Nuclei - Galaxies: Seyfert - Galaxies: Starburst

Simbad objects: 19

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