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Modelling the emission of passive galaxy candidates at z∼3

Published online by Cambridge University Press:  10 June 2020

C. D’Eugenio ,
E. Daddi ,
R. Gobat ,
V. Strazzullo  and
S. Jin
C. D’Eugenio
Affiliation:
CEA, IRFU, DAp, AIM, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, CNRS, F-91191 Gif-sur-Yvette, France email: [email protected]
E. Daddi
Affiliation:
CEA, IRFU, DAp, AIM, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, CNRS, F-91191 Gif-sur-Yvette, France email: [email protected]
R. Gobat
Affiliation:
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile
V. Strazzullo
Affiliation:
Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, 81679 Munich, Germany
S. Jin
Affiliation:
Instituto de Astrofiśica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain Universidad de La Laguna, Dpto. Astrofiśica, E-38206 La Laguna, Tenerife, Spain
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Abstract

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Early-type galaxies (ETGs) are of crucial importance to trace back the galaxy mass assembly across cosmic time, yet their formation and quenching remain remarkably elusive. The discoveries of massive, dead galaxies at ever-growing redshifts provided compelling evidence to push their formation up to redshift > 4–5 when the Universe was barely 1 Gyr old. In this talk I will present our results on the ages of a new sample of ETGs at z ∼ 3, built by exploiting HST WFC3/G141 rest-frame optical/near-UV grism spectroscopy to study the nature of 10 passive galaxy candidates at 2.5 < z < 3.5 in COSMOS.

This work is part of a PhD project aimed at quantifying the parent space density of distant genuine passive galaxies. I will also discuss the importance of multi-wavelength data in clarifying the degree of contamination by dusty star-forming galaxies affecting the color selection.

Keywords

Galaxies: evolutionGalaxies: elliptical and lenticularcDGalaxies: high-redshift
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S341: Challenges in Panchromatic Modelling with Next Generation Facilities , November 2019 , pp. 44 - 49
Copyright
© International Astronomical Union 2020

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