Journal
ASTRONOMY & ASTROPHYSICS
Volume 579, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201526354
Keywords
galaxies: interactions; galaxies: evolution; galaxies: kinematics and dynamics; galaxies: elliptical and lenticular, cD
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Funding
- DAGAL network from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme under REA [PITN-GA-2011-289313]
- Spanish Ministry of Economy and Competitiveness (MINECO) -European Research Council Starting Grant [AYA2012-31277, AYA2013-48226-C3-1-P.J.M.A]
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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 lambda(Re)-R-90/R-50 plane found by the CALIFA team. Major mergers thus offer a feasible explanation for the transformation of spirals into S0s.
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