The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate

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The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate. / Gobat, R.; Magdis, G.; D'Eugenio, C.; Valentino, F.

In: Astronomy & Astrophysics, Vol. 644, L7, 09.12.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Gobat, R, Magdis, G, D'Eugenio, C & Valentino, F 2020, 'The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate', Astronomy & Astrophysics, vol. 644, L7. https://doi.org/10.1051/0004-6361/202039593

APA

Gobat, R., Magdis, G., D'Eugenio, C., & Valentino, F. (2020). The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate. Astronomy & Astrophysics, 644, [L7]. https://doi.org/10.1051/0004-6361/202039593

Vancouver

Gobat R, Magdis G, D'Eugenio C, Valentino F. The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate. Astronomy & Astrophysics. 2020 Dec 9;644. L7. https://doi.org/10.1051/0004-6361/202039593

Author

Gobat, R. ; Magdis, G. ; D'Eugenio, C. ; Valentino, F. / The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate. In: Astronomy & Astrophysics. 2020 ; Vol. 644.

Bibtex

@article{4d962c826c2040e8b37348c4db45cbbe,
title = "The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate",
abstract = "We discuss the evolution of the interstellar medium of quiescent galaxies, currently emerging from recent analyses, with the help of a simple model based on well-established empirical relations such as the stellar mass functions and the main sequence of star formation. This model is meant to describe observed quantities without making specific assumptions on the nature of quenching processes, but relying on their observable consequences. We find that the high gas fractions seen or suggested at high redshift in quiescent galaxies, and their apparent mild evolution at early times, can be mostly attributed to a progenitor effect where recently quenched galaxies with similar to 10% gas fractions dominate the quiescent galaxy population until z similar to 1. In the same context, the much lower gas and dust fractions measured in local early-type galaxies are interpreted as the product of the steady depletion of their interstellar medium on a similar to 2 Gyr timescale, coupled with a higher fraction of more gas-exhaustive events.",
keywords = "galaxies: elliptical and lenticular, cD, galaxies: formation, galaxies: ISM, STAR-FORMATION, ATLAS(3D) PROJECT, MASS, KINEMATICS, REDSHIFT, PATHWAYS, BULGES",
author = "R. Gobat and G. Magdis and C. D'Eugenio and F. Valentino",
year = "2020",
month = dec,
day = "9",
doi = "10.1051/0004-6361/202039593",
language = "English",
volume = "644",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate

AU - Gobat, R.

AU - Magdis, G.

AU - D'Eugenio, C.

AU - Valentino, F.

PY - 2020/12/9

Y1 - 2020/12/9

N2 - We discuss the evolution of the interstellar medium of quiescent galaxies, currently emerging from recent analyses, with the help of a simple model based on well-established empirical relations such as the stellar mass functions and the main sequence of star formation. This model is meant to describe observed quantities without making specific assumptions on the nature of quenching processes, but relying on their observable consequences. We find that the high gas fractions seen or suggested at high redshift in quiescent galaxies, and their apparent mild evolution at early times, can be mostly attributed to a progenitor effect where recently quenched galaxies with similar to 10% gas fractions dominate the quiescent galaxy population until z similar to 1. In the same context, the much lower gas and dust fractions measured in local early-type galaxies are interpreted as the product of the steady depletion of their interstellar medium on a similar to 2 Gyr timescale, coupled with a higher fraction of more gas-exhaustive events.

AB - We discuss the evolution of the interstellar medium of quiescent galaxies, currently emerging from recent analyses, with the help of a simple model based on well-established empirical relations such as the stellar mass functions and the main sequence of star formation. This model is meant to describe observed quantities without making specific assumptions on the nature of quenching processes, but relying on their observable consequences. We find that the high gas fractions seen or suggested at high redshift in quiescent galaxies, and their apparent mild evolution at early times, can be mostly attributed to a progenitor effect where recently quenched galaxies with similar to 10% gas fractions dominate the quiescent galaxy population until z similar to 1. In the same context, the much lower gas and dust fractions measured in local early-type galaxies are interpreted as the product of the steady depletion of their interstellar medium on a similar to 2 Gyr timescale, coupled with a higher fraction of more gas-exhaustive events.

KW - galaxies: elliptical and lenticular

KW - cD

KW - galaxies: formation

KW - galaxies: ISM

KW - STAR-FORMATION

KW - ATLAS(3D) PROJECT

KW - MASS

KW - KINEMATICS

KW - REDSHIFT

KW - PATHWAYS

KW - BULGES

U2 - 10.1051/0004-6361/202039593

DO - 10.1051/0004-6361/202039593

M3 - Journal article

VL - 644

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - L7

ER -

ID: 257865297