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From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS

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From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS. / Sobral, D.; Best, P.; Smail, I. J.
Environment and the Formation of Galaxies: 30 years later: Proceedings of Symposium 2 of JENAM 2010. ed. / Ignacio Ferreras; Anna Pasquali. Berlin: Springer, 2011. p. 179-184 (Astrophysics and Space Science Proceedings).

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

Harvard

Sobral, D, Best, P & Smail, IJ 2011, From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS. in I Ferreras & A Pasquali (eds), Environment and the Formation of Galaxies: 30 years later: Proceedings of Symposium 2 of JENAM 2010. Astrophysics and Space Science Proceedings, Springer, Berlin, pp. 179-184, 2nd JENAM Symposium: Environment and the Formation of Galaxies: 30 Years Later, JENAM 2010, Lisbon, Portugal, 6/09/10. https://doi.org/10.1007/978-3-642-20285-8-36

APA

Sobral, D., Best, P., & Smail, I. J. (2011). From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS. In I. Ferreras, & A. Pasquali (Eds.), Environment and the Formation of Galaxies: 30 years later: Proceedings of Symposium 2 of JENAM 2010 (pp. 179-184). (Astrophysics and Space Science Proceedings). Springer. https://doi.org/10.1007/978-3-642-20285-8-36

Vancouver

Sobral D, Best P, Smail IJ. From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS. In Ferreras I, Pasquali A, editors, Environment and the Formation of Galaxies: 30 years later: Proceedings of Symposium 2 of JENAM 2010. Berlin: Springer. 2011. p. 179-184. (Astrophysics and Space Science Proceedings). doi: 10.1007/978-3-642-20285-8-36

Author

Sobral, D. ; Best, P. ; Smail, I. J. / From fields to a super-cluster : the role of the environment at z=0:84 with HiZELS. Environment and the Formation of Galaxies: 30 years later: Proceedings of Symposium 2 of JENAM 2010. editor / Ignacio Ferreras ; Anna Pasquali. Berlin : Springer, 2011. pp. 179-184 (Astrophysics and Space Science Proceedings).

Bibtex

@inproceedings{f8c79b8f3e58436ba44aa1bed73912d3,
title = "From fields to a super-cluster: the role of the environment at z=0:84 with HiZELS",
abstract = "At z=0, clusters are primarily populated by red, elliptical and massive galaxies, while blue, spiral and lower-mass galaxies are common in low-density environments. Understanding how and when these differences were established is of absolute importance for our understanding of galaxy formation and evolution, but results at high-z remain contradictory. By taking advantage of the widest and deepest Hα narrow-band survey at z=0:84 over the COSMOS and UKIDSS UDS fields, probing a wide range of densities (from poor fields to rich groups and clusters, including a confirmed super-cluster with a striking filamentary structure), we show that the fraction of star-forming galaxies falls continuously from ∼40% in fields to approaching 0% in rich groups/clusters. We also find that the median SFR increases with environmental density, at least up to group densities - but only for low and medium mass galaxies, and thus such enhancement is mass-dependent at z ∼ 1. The environment also plays a role in setting the faint-end slope (α) of the Hα luminosity function. Our findings provide a sharper view on galaxy formation and evolution and reconcile previously contradictory results at z∼1: stellar mass is the primary predictor of star formation activity, but the environment also plays a major role.",
author = "D. Sobral and P. Best and Smail, {I. J.}",
year = "2011",
doi = "10.1007/978-3-642-20285-8-36",
language = "English",
isbn = "9783642202841",
series = "Astrophysics and Space Science Proceedings",
publisher = "Springer",
pages = "179--184",
editor = "Ignacio Ferreras and Anna Pasquali",
booktitle = "Environment and the Formation of Galaxies: 30 years later",
note = "2nd JENAM Symposium: Environment and the Formation of Galaxies: 30 Years Later, JENAM 2010 ; Conference date: 06-09-2010 Through 10-09-2010",

}

RIS

TY - GEN

T1 - From fields to a super-cluster

T2 - 2nd JENAM Symposium: Environment and the Formation of Galaxies: 30 Years Later, JENAM 2010

AU - Sobral, D.

AU - Best, P.

AU - Smail, I. J.

PY - 2011

Y1 - 2011

N2 - At z=0, clusters are primarily populated by red, elliptical and massive galaxies, while blue, spiral and lower-mass galaxies are common in low-density environments. Understanding how and when these differences were established is of absolute importance for our understanding of galaxy formation and evolution, but results at high-z remain contradictory. By taking advantage of the widest and deepest Hα narrow-band survey at z=0:84 over the COSMOS and UKIDSS UDS fields, probing a wide range of densities (from poor fields to rich groups and clusters, including a confirmed super-cluster with a striking filamentary structure), we show that the fraction of star-forming galaxies falls continuously from ∼40% in fields to approaching 0% in rich groups/clusters. We also find that the median SFR increases with environmental density, at least up to group densities - but only for low and medium mass galaxies, and thus such enhancement is mass-dependent at z ∼ 1. The environment also plays a role in setting the faint-end slope (α) of the Hα luminosity function. Our findings provide a sharper view on galaxy formation and evolution and reconcile previously contradictory results at z∼1: stellar mass is the primary predictor of star formation activity, but the environment also plays a major role.

AB - At z=0, clusters are primarily populated by red, elliptical and massive galaxies, while blue, spiral and lower-mass galaxies are common in low-density environments. Understanding how and when these differences were established is of absolute importance for our understanding of galaxy formation and evolution, but results at high-z remain contradictory. By taking advantage of the widest and deepest Hα narrow-band survey at z=0:84 over the COSMOS and UKIDSS UDS fields, probing a wide range of densities (from poor fields to rich groups and clusters, including a confirmed super-cluster with a striking filamentary structure), we show that the fraction of star-forming galaxies falls continuously from ∼40% in fields to approaching 0% in rich groups/clusters. We also find that the median SFR increases with environmental density, at least up to group densities - but only for low and medium mass galaxies, and thus such enhancement is mass-dependent at z ∼ 1. The environment also plays a role in setting the faint-end slope (α) of the Hα luminosity function. Our findings provide a sharper view on galaxy formation and evolution and reconcile previously contradictory results at z∼1: stellar mass is the primary predictor of star formation activity, but the environment also plays a major role.

U2 - 10.1007/978-3-642-20285-8-36

DO - 10.1007/978-3-642-20285-8-36

M3 - Conference contribution/Paper

AN - SCOPUS:84896501561

SN - 9783642202841

SN - 9783642269950

T3 - Astrophysics and Space Science Proceedings

SP - 179

EP - 184

BT - Environment and the Formation of Galaxies: 30 years later

A2 - Ferreras, Ignacio

A2 - Pasquali, Anna

PB - Springer

CY - Berlin

Y2 - 6 September 2010 through 10 September 2010

ER -