The nuclear starburst activity in the Seyfert 2 galaxy NGC 7679

Abstract

We present our recent spectrophotometric results of the infrared luminous Seyfert 2 galaxy NGC 7679. We find compelling evidence of the presence of a recent nuclear starburst, revealed by the observations of a) the spectral features of high order Balmer absorption lines, b) the weak equivalent widths for CaIIK $\lambda$3933, CN $\lambda$4200, G-band $\lambda$4300 and MgIb $\lambda$5173, and c) the suggested UV stellar wind resonance lines (N V $\lambda$1240, Si IV $\lambda$1400 and C IV $\lambda$1550) in the IUE spectrum. Using the simple stellar population synthesis model, we find that in the nuclear 2" $\times$ 2" region, the contributions from the old, intermediate and young components are 21.7%, 42.9% and 35.4%, respectively. These nuclear starburst activities might be triggered by the close encounter with NGC 7682, as suggested by recent numerical simulations.

arXiv comment8 pages, 3 figures, to be published in A&A

References in corpus (6)

• Gasdynamics and Starbursts in Major Mergers
• The Nuclear and Circum-nuclear Stellar Population in Seyfert 2 Galaxies: Implications for the Starburst-AGN Connection
• Synthetic spectra of H Balmer and HeI absorption lines. II: Evolutionary synthesis models for starburst and post-starburst galaxies
• Ultraviolet-Optical observations of the Seyfert 2 Galaxies NGC 7130, NGC 5135 and IC 3639: Implications for the Starburst-AGN Connection
• The frequency of nuclear star-formation in Seyfert 2 galaxies
• Wolf-Rayet stars as tracing the AGN-starburst connection

Cited by in corpus (12)

• The star formation history of Seyfert 2 nuclei
• The subarcsecond mid-infrared view of local active galactic nuclei: I. The N- and Q-band imaging atlas
• The first detection of near-infrared CN bands in active galactic nuclei: signature of star formation
• Cosmic Evolution of Star Formation In SDSS Quasar Hosts Since z=1
• Star formation in luminous quasar host galaxies at z=1-2
• Star Formation History and Extinction in the central kpc of M82-like Starbursts
• Properties of Galaxies Hosting X-ray Selected Active Galactic Nuclei in the Cl1604 Supercluster at z=0.9
• An ACA Survey of [CI] ${}^3{P}_1{-}^3{P}_0$, CO $J=4-3$, and Dust Continuum in Nearby U/LIRG
• Star formation in the dwarf Seyfert galaxy NGC 4395: Evidence for both AGN and SNe feedback?
• Separating C-stars from Dust in the Central Region of the Seyfert 2 Galaxy NGC 1241
• The luminous infrared composite Seyfert 2 galaxy NGC 7679 through the [O III] 5007 emission line
• NGC 7679: an anomalous, composite Seyfert 1 galaxy whose, X-ray luminous AGN vanishes at optical wavelengths