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The evolution of quiescent galaxies at high redshifts (z≥ 1.4)

Identifieur interne : 000968 ( Main/Curation ); précédent : 000967; suivant : 000969

The evolution of quiescent galaxies at high redshifts (z≥ 1.4)

Auteurs : H. Domínguez Sánchez [Italie, Espagne] ; F. Pozzi [Italie] ; C. Gruppioni [Italie] ; A. Cimatti [Italie] ; O. Ilbert [France] ; L. Pozzetti [Italie] ; H. Mccracken [France] ; P. Capak [États-Unis] ; E. Le Floch [France] ; M. Salvato [Allemagne] ; G. Zamorani [Italie] ; C. M. Carollo [Suisse] ; T. Contini [France] ; J. Kneib [France] ; O. Le Fèvre [France] ; S. J. Lilly [Suisse] ; V. Mainieri [Allemagne] ; A. Renzini [Italie] ; M. Scodeggio [Italie] ; S. Bardelli [Italie] ; M. Bolzonella [Italie] ; A. Bongiorno [Allemagne] ; K. Caputi [Suisse] ; G. Coppa [Italie] ; O. Cucciati [Italie] ; S. De La Torre [Italie] ; L. De Ravel [France] ; P. Franzetti [Italie] ; B. Garilli [Italie] ; A. Iovino [Italie] ; P. Kampczyk [Suisse] ; C. Knobel [Suisse] ; K. Kova [Suisse] ; F. Lamareille [France] ; J. Le Borgne [France] ; V. Le Brun [France] ; C. Maier [Suisse] ; M. Mignoli [Italie] ; R. Pell [France] ; Y. Peng [Suisse] ; E. Perez-Montero [France, Espagne] ; E. Ricciardelli [Espagne, Italie] ; J. D. Silverman [Suisse, Japon] ; M. Tanaka [Allemagne, Japon] ; L. A. M. Tasca [France, Italie] ; L. Tresse [France] ; D. Vergani [Italie] ; E. Zucca [Italie]

Source :

RBID : ISTEX:22AC2EE1E7FD719A56513B495161FA77934E9C54

English descriptors

Abstract

The goal of this work is to study the evolution of high‐redshift (z≥ 1.4) quiescent galaxies over an effective area of ∼1.7 deg2 in the COSMOS field. Galaxies have been divided according to their star formation activity and the evolution of the different populations, in particular of the quiescent galaxies, has been investigated in detail. We have studied an IRAC (mag 3.6 μm < 22.0) selected sample of ∼18 000 galaxies at z≥ 1.4 in the COSMOS field with multiwavelength coverage extending from the U band to the Spitzer 24 μm one. We have derived accurate photometric redshifts () through a SED‐fitting procedure. Other important physical parameters [masses, ages and star formation rates (SFR)] of the galaxies have been obtained using Maraston models. We have divided our sample into actively star‐forming, intermediate and quiescent galaxies depending on their specific star formation rate (SSFR = SFR/M). We have computed the galaxy stellar mass function (GSMF) of the total sample and the different populations at z= 1.4–3.0. We have studied the properties of high‐redshift quiescent galaxies finding that they are old (1–4 Gyr), massive (〈M〉∼ 1010.65 M⊙), weakly star‐forming stellar populations with low dust extinction [E(B−V) ≤ 0.15] and small e‐folding time‐scales (τ∼ 0.1–0.3 Gyr). We observe a significant evolution of the quiescent stellar mass function from 2.5 < z < 3.0 to 1.4 < z < 1.6, increasing by ∼1 dex in this redshift interval. We find that z∼ 1.5 is an epoch of transition of the GSMF: while the GSMF at z≳ 1.5 is dominated by the star‐forming galaxies at all stellar masses, at z≲ 1.5 the contribution to the total GSMF of the quiescent galaxies is significant and becomes higher than that of the star‐forming population for M≥ 1010.75 M⊙. The fraction of star‐forming galaxies decreases from 60–20 per cent from z∼ 2.5–3.0 to 1.4–1.6 for M∼ 1011.0 M⊙, while the quiescent population increases from 10–50 per cent at the same redshift and mass intervals. We compare the fraction of quiescent galaxies derived with that predicted by theoretical models and find that the Kitzbichler & White model, implemented on the Millennium Simulation, is the one that better reproduces the shape of the data. Finally, we calculate the stellar mass density of the star‐forming and quiescent populations as a function of redshift and find that there is already a significant number of quiescent galaxies at z > 2.5 (logρ[M⊙ Mpc−3]∼ 6), meaning that efficient star formation had to take place before that time.

Url:
DOI: 10.1111/j.1365-2966.2011.19263.x

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<wicri:regionArea>Max‐Planck‐Institut für Extraterrestrische Physik, Giessenbachstraße, 84571 Garching bei München</wicri:regionArea>
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<name sortKey="Caputi, K" sort="Caputi, K" uniqKey="Caputi K" first="K." last="Caputi">K. Caputi</name>
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<affiliation>
<mods:affiliation>Institute for Astronomy, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ</mods:affiliation>
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<country xml:lang="fr">France</country>
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<affiliation>
<mods:affiliation>Institute for Astronomy, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ</mods:affiliation>
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<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF ‐ IASF Milano, via Bassini 15, 20133 Milano</wicri:regionArea>
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<name sortKey="Garilli, B" sort="Garilli, B" uniqKey="Garilli B" first="B." last="Garilli">B. Garilli</name>
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<mods:affiliation>INAF ‐ IASF Milano, via Bassini 15, 20133 Milano, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF ‐ IASF Milano, via Bassini 15, 20133 Milano</wicri:regionArea>
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<mods:affiliation>INAF ‐ Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy</mods:affiliation>
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<wicri:regionArea>INAF ‐ Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano</wicri:regionArea>
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<name sortKey="Kampczyk, P" sort="Kampczyk, P" uniqKey="Kampczyk P" first="P." last="Kampczyk">P. Kampczyk</name>
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<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
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<name sortKey="Knobel, C" sort="Knobel, C" uniqKey="Knobel C" first="C." last="Knobel">C. Knobel</name>
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<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
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<author>
<name sortKey="Kova, K" sort="Kova, K" uniqKey="Kova K" first="K." last="Kova">K. Kova</name>
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<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
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<author>
<name sortKey="Lamareille, F" sort="Lamareille, F" uniqKey="Lamareille F" first="F." last="Lamareille">F. Lamareille</name>
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<mods:affiliation>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse</wicri:regionArea>
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<mods:affiliation>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse</wicri:regionArea>
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<name sortKey="Le Brun, V" sort="Le Brun, V" uniqKey="Le Brun V" first="V." last="Le Brun">V. Le Brun</name>
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<mods:affiliation>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13</wicri:regionArea>
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<name sortKey="Maier, C" sort="Maier, C" uniqKey="Maier C" first="C." last="Maier">C. Maier</name>
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<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
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<author>
<name sortKey="Mignoli, M" sort="Mignoli, M" uniqKey="Mignoli M" first="M." last="Mignoli">M. Mignoli</name>
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<mods:affiliation>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna</wicri:regionArea>
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<author>
<name sortKey="Pell, R" sort="Pell, R" uniqKey="Pell R" first="R." last="Pell">R. Pell</name>
<affiliation wicri:level="1">
<mods:affiliation>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse</wicri:regionArea>
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</author>
<author>
<name sortKey="Peng, Y" sort="Peng, Y" uniqKey="Peng Y" first="Y." last="Peng">Y. Peng</name>
<affiliation wicri:level="1">
<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
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</author>
<author>
<name sortKey="Perez Ontero, E" sort="Perez Ontero, E" uniqKey="Perez Ontero E" first="E." last="Perez-Montero">E. Perez-Montero</name>
<affiliation wicri:level="1">
<mods:affiliation>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Toulouse‐Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1">
<mods:affiliation>Instituto de Astrofisica de Andalucia, CSIC, Apdo. 3004, 18080 Granada, Spain</mods:affiliation>
<country xml:lang="fr">Espagne</country>
<wicri:regionArea>Instituto de Astrofisica de Andalucia, CSIC, Apdo. 3004, 18080 Granada</wicri:regionArea>
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<author>
<name sortKey="Ricciardelli, E" sort="Ricciardelli, E" uniqKey="Ricciardelli E" first="E." last="Ricciardelli">E. Ricciardelli</name>
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<mods:affiliation>Instituto de Astrofísica de Canarias, 38205 La Laguna, Spain</mods:affiliation>
<country xml:lang="fr">Espagne</country>
<wicri:regionArea>Instituto de Astrofísica de Canarias, 38205 La Laguna</wicri:regionArea>
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<mods:affiliation>INAF ‐ Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, 35122 Padova, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF ‐ Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, 35122 Padova</wicri:regionArea>
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<name sortKey="Silverman, J D" sort="Silverman, J D" uniqKey="Silverman J" first="J. D." last="Silverman">J. D. Silverman</name>
<affiliation wicri:level="1">
<mods:affiliation>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich, Switzerland</mods:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>ETH Zurich, Institute of Astronomy, Wolfgang‐Pauli‐Straße 27, 8093 Zurich</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1">
<mods:affiliation>Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwanoha 5‐1‐5, Kashiwa‐shi, Chiba 277‐8568, Japan</mods:affiliation>
<country xml:lang="fr">Japon</country>
<wicri:regionArea>Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwanoha 5‐1‐5, Kashiwa‐shi, Chiba 277‐8568</wicri:regionArea>
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<author>
<name sortKey="Tanaka, M" sort="Tanaka, M" uniqKey="Tanaka M" first="M." last="Tanaka">M. Tanaka</name>
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<mods:affiliation>European Southern Observatory, Karl‐Schwarzschild‐Straße 2, 85748 Garching bei München, Germany</mods:affiliation>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>European Southern Observatory, Karl‐Schwarzschild‐Straße 2, 85748 Garching bei München</wicri:regionArea>
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<mods:affiliation>Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwanoha 5‐1‐5, Kashiwa‐shi, Chiba 277‐8568, Japan</mods:affiliation>
<country xml:lang="fr">Japon</country>
<wicri:regionArea>Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwanoha 5‐1‐5, Kashiwa‐shi, Chiba 277‐8568</wicri:regionArea>
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</author>
<author>
<name sortKey="Tasca, L A M" sort="Tasca, L A M" uniqKey="Tasca L" first="L. A. M." last="Tasca">L. A. M. Tasca</name>
<affiliation wicri:level="1">
<mods:affiliation>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1">
<mods:affiliation>INAF ‐ IASF Milano, via Bassini 15, 20133 Milano, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF ‐ IASF Milano, via Bassini 15, 20133 Milano</wicri:regionArea>
</affiliation>
</author>
<author>
<name sortKey="Tresse, L" sort="Tresse, L" uniqKey="Tresse L" first="L." last="Tresse">L. Tresse</name>
<affiliation wicri:level="1">
<mods:affiliation>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13, France</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d’Astrophysique de Marseille, Université d’Aix‐Marseille, CNRS, 38 rue Frédéric Joliot‐Curie, 13388 Marseille Cedex 13</wicri:regionArea>
</affiliation>
</author>
<author>
<name sortKey="Vergani, D" sort="Vergani, D" uniqKey="Vergani D" first="D." last="Vergani">D. Vergani</name>
<affiliation wicri:level="1">
<mods:affiliation>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna</wicri:regionArea>
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<author>
<name sortKey="Zucca, E" sort="Zucca, E" uniqKey="Zucca E" first="E." last="Zucca">E. Zucca</name>
<affiliation wicri:level="1">
<mods:affiliation>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna, Italy</mods:affiliation>
<country xml:lang="fr">Italie</country>
<wicri:regionArea>INAF‐Osservatorio Astronomico di Bologna, via Ranzani 1, I‐40127 Bologna</wicri:regionArea>
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<monogr></monogr>
<series>
<title level="j">Monthly Notices of the Royal Astronomical Society</title>
<idno type="ISSN">0035-8711</idno>
<idno type="eISSN">1365-2966</idno>
<imprint>
<publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="2011-10-21">2011-10-21</date>
<biblScope unit="volume">417</biblScope>
<biblScope unit="issue">2</biblScope>
<biblScope unit="page" from="900">900</biblScope>
<biblScope unit="page" to="915">915</biblScope>
</imprint>
<idno type="ISSN">0035-8711</idno>
</series>
<idno type="istex">22AC2EE1E7FD719A56513B495161FA77934E9C54</idno>
<idno type="DOI">10.1111/j.1365-2966.2011.19263.x</idno>
<idno type="ArticleID">MNR19263</idno>
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<idno type="ISSN">0035-8711</idno>
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<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>galaxies: evolution</term>
<term>galaxies: high‐redshift</term>
<term>galaxies: star formation</term>
</keywords>
</textClass>
<langUsage>
<language ident="en">en</language>
</langUsage>
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<front>
<div type="abstract" xml:lang="en">The goal of this work is to study the evolution of high‐redshift (z≥ 1.4) quiescent galaxies over an effective area of ∼1.7 deg2 in the COSMOS field. Galaxies have been divided according to their star formation activity and the evolution of the different populations, in particular of the quiescent galaxies, has been investigated in detail. We have studied an IRAC (mag 3.6 μm < 22.0) selected sample of ∼18 000 galaxies at z≥ 1.4 in the COSMOS field with multiwavelength coverage extending from the U band to the Spitzer 24 μm one. We have derived accurate photometric redshifts () through a SED‐fitting procedure. Other important physical parameters [masses, ages and star formation rates (SFR)] of the galaxies have been obtained using Maraston models. We have divided our sample into actively star‐forming, intermediate and quiescent galaxies depending on their specific star formation rate (SSFR = SFR/M). We have computed the galaxy stellar mass function (GSMF) of the total sample and the different populations at z= 1.4–3.0. We have studied the properties of high‐redshift quiescent galaxies finding that they are old (1–4 Gyr), massive (〈M〉∼ 1010.65 M⊙), weakly star‐forming stellar populations with low dust extinction [E(B−V) ≤ 0.15] and small e‐folding time‐scales (τ∼ 0.1–0.3 Gyr). We observe a significant evolution of the quiescent stellar mass function from 2.5 < z < 3.0 to 1.4 < z < 1.6, increasing by ∼1 dex in this redshift interval. We find that z∼ 1.5 is an epoch of transition of the GSMF: while the GSMF at z≳ 1.5 is dominated by the star‐forming galaxies at all stellar masses, at z≲ 1.5 the contribution to the total GSMF of the quiescent galaxies is significant and becomes higher than that of the star‐forming population for M≥ 1010.75 M⊙. The fraction of star‐forming galaxies decreases from 60–20 per cent from z∼ 2.5–3.0 to 1.4–1.6 for M∼ 1011.0 M⊙, while the quiescent population increases from 10–50 per cent at the same redshift and mass intervals. We compare the fraction of quiescent galaxies derived with that predicted by theoretical models and find that the Kitzbichler & White model, implemented on the Millennium Simulation, is the one that better reproduces the shape of the data. Finally, we calculate the stellar mass density of the star‐forming and quiescent populations as a function of redshift and find that there is already a significant number of quiescent galaxies at z > 2.5 (logρ[M⊙ Mpc−3]∼ 6), meaning that efficient star formation had to take place before that time.</div>
</front>
</TEI>
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