Bibcode
Laurikainen, E.; Salo, H.; Buta, R.; Knapen, J. H.
Referencia bibliográfica
Highlights of Astronomy, Volume 16, pp. 331-331
Advertised on:
3
2015
Número de citas
1
Número de citas referidas
1
Descripción
NIRS0S (Near-IR S0 galaxy Survey), is a K-band survey of ~ 200
early-type disk galaxies, mainly S0s, 2-3 mag deeper than the 2Micron
All Sky Survey. In depth morphological analysis was done, in which
multi-component structural decompositions played an important role.
Possible implications to internal dynamical galaxy evolution were
discussed. S0s were suggested to be former spirals in which star
formation has ceased, forming a parallel sequence with spirals (see Fig.
1). If that evolution is faster among the brighter galaxies, the
observed magnitude difference between the barred and non-barred S0s
could be understood. Bars are suggested to play a critical role in such
evolution. For example, the inner lenses in the bright non-barred S0s
can be explained as former barlenses (inner parts of bars), in which the
elongated bar component has dissolved. We suggest that the last
destructive merger event happened at a fairly large redshift.