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Testing the quenching subgrid physics in Green Valley galaxies

Published online by Cambridge University Press:  09 June 2023

Ignacio Ferreras Open the ORCID record for Ignacio Ferreras [Opens in a new window] ,
James Angthopo  and
Andrea Negri
Ignacio Ferreras
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E38205, La Laguna, Tenerife, Spain Dept. of Physics and Astronomy, University College London, London WC1E 6BT, UK
James Angthopo
Affiliation:
MSSL, University College London, Holmbury St Mary, Surrey, RH5 6NT, UK INAF, Osservatorio Astronomico di Brera, Via Brera 28, 20121, Milano, Italy
Andrea Negri
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E38205, La Laguna, Tenerife, Spain
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Abstract

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In the title of this Symposium: “The rise and fall of star formation in galaxies”, the “falling” stage is mostly represented by so-called Green Valley galaxies. In this phase, quenching mechanisms operate, concerning the evolution from star formation towards quiescence. Therefore, GV galaxies are ideal laboratories to test cosmological simulations. This contribution focuses on the application of a novel, dust-independent, definition of the GV, to two of the most recent simulations: EAGLE and Illustris-TNG. We present some of the results, concerning the excess fraction of quenched galaxies in simulations, with respect to observational data from SDSS. We suggest possible causes for the mismatch.

Keywords

galaxies: evolutiongalaxies: stellar contentmethods: numerical
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 203 - 206
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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