Bibcode
Querejeta, M.; Eliche-Moral, M. C.; Tapia, T.; Borlaff, A.; van de Ven, G.; Lyubenova, M.; Martig, M.; Falcón-Barroso, J.; Méndez-Abreu, J.
Bibliographical reference
Astronomy and Astrophysics, Volume 579, id.L2, 6 pp.
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7
2015
Journal
Citations
59
Refereed citations
54
Description
The CALIFA team has recently found that the stellar angular momentum and
concentration of late-type spiral galaxies are incompatible with those
of lenticular galaxies (S0s), concluding that fading alone cannot
satisfactorily explain the evolution from spirals into S0s. Here we
explore whether major mergers can provide an alternative way to
transform spirals into S0s by analysing the spiral-spiral major mergers
from the GalMer database that lead to realistic, relaxed S0-like
galaxies. We find that the change in stellar angular momentum and
concentration can explain the differences in the
λRe-R90/R50 plane found by the
CALIFA team. Major mergers thus offer a feasible explanation for the
transformation of spirals into S0s.
Table 1 is available in electronic form at http://www.aanda.org
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Traces of Galaxy Formation: Stellar populations, Dynamics and Morphology
We are a large, diverse, and very active research group aiming to provide a comprehensive picture for the formation of galaxies in the Universe. Rooted in detailed stellar population analysis, we are constantly exploring and developing new tools and ideas to understand how galaxies came to be what we now observe.
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Martín Navarro