Bibcode
Gu, Q. S.; Huang, J. H.; de Diego, J. A.; Dultzin-Hacyan, D.; Lei, S. J.; Benítez, E.
Referencia bibliográfica
Astronomy and Astrophysics, v.374, p.932-935 (2001)
Fecha de publicación:
8
2001
Revista
Número de citas
14
Número de citas referidas
12
Descripción
We present our recent spectrophotometric results of the infrared
luminous Seyfert 2 galaxy NGC 7679. We find compelling evidence for 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'' x 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 have been
triggered by the close encounter with NGC 7682, as suggested by recent
numerical simulations.