Kinematic differences between NLS1 and BLAGN sources

TL;DR

This paper investigates the kinematic differences between NLS1 and BLS1 galaxies, highlighting how NLS1s exhibit signs of rapid black hole growth and potential evolutionary stages distinct from BLS1s.

Contribution

It provides new insights into the kinematic properties and evolutionary implications of NLS1 versus BLS1 galaxies based on their line and continuum luminosities.

Findings

NLS1s show correlations between luminosities and FWHM(Hβ).

BLS1s do not exhibit these correlations.

PAHs may be destroyed as black holes grow in NLS1s.

Abstract

It is well-known that the higher policyclic aromatic hydrocarbon (PAH) abundance, lower black hole mass, higher accretion rate and lower luminosities are among the major characteristics of Narrow-Line Seyfert galaxies (NLS1), when they are compared to Broad line Seyfert galaxies (BLS1). NLS1s may be normal Seyfert galaxies at an early stage of evolution, their black holes may still be growing and/or they could be special for some other reason. In this work we discuss the findings that NLS1s have most of line and continuum luminosities correlated with FWHM(H$\beta$), which may be the trace of their rapid black hole mass grow. BLS1 do not show such trends. Also, PAHs may be destroyed as the black hole grows and the starbursts are removed, for NLS1 objects.