The Fornax3D project: Tracing the assembly history of the cluster from the kinematic and line-strength maps

Iodice, E.; Sarzi, M.; Bittner, A.; Coccato, L.; Costantin, L.; Corsini, E. M.; van de Ven, G.; de Zeeuw, P. T.; Falcón-Barroso, J.; Gadotti, D. A.; Lyubenova, M.; Martín-Navarro, I.; McDermid, R. M.; Nedelchev, B.; Pinna, F.; Pizzella, A.; Spavone, M.; Viaene, S.
Bibliographical reference

Astronomy and Astrophysics, Volume 627, id. A136, 51 pp.

Advertised on:
7
2019
Number of authors
18
IAC number of authors
2
Citations
52
Refereed citations
50
Description
The 31 brightest galaxies (mB ≤ 15 mag) inside the virial radius of the Fornax cluster were observed from the centres to the outskirts with the Multi Unit Spectroscopic Explorer on the Very Large Telescope. These observations provide detailed high-resolution maps of the line-of-sight kinematics, line strengths of the stars, ionised gas reaching 2-3 Re for 21 early-type galaxies, and 1-2 Re for 10 late-type galaxies. The majority of the galaxies are regular rotators, with eight hosting a kinematically distinct core. Only two galaxies are slow rotators. The mean age, total metallicity, and [Mg/Fe] abundance ratio in the bright central region inside 0.5 Re and in the galaxy outskirts are presented. Extended emission-line gas is detected in 13 galaxies, most of them are late-type objects with wide-spread star formation. The measured structural properties are analysed in relation to the galaxies' position in the projected phase space of the cluster. This shows that the Fornax cluster appears to consist of three main groups of galaxies inside the virial radius: the old core; a clump of galaxies, which is aligned with the local large-scale structure and was accreted soon after the formation of the core; and a group of galaxies that fell in more recently.
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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