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Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups

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Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups. / Crossett, Jacob P.; Pimbblet, Kevin A.; Jones, D. Heath et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 464, No. 1, 01.2017, p. 480-490.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Crossett, JP, Pimbblet, KA, Jones, DH, Brown, MJI & Stott, JP 2017, 'Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups', Monthly Notices of the Royal Astronomical Society, vol. 464, no. 1, pp. 480-490. https://doi.org/10.1093/mnras/stw2228

APA

Crossett, J. P., Pimbblet, K. A., Jones, D. H., Brown, M. J. I., & Stott, J. P. (2017). Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups. Monthly Notices of the Royal Astronomical Society, 464(1), 480-490. https://doi.org/10.1093/mnras/stw2228

Vancouver

Crossett JP, Pimbblet KA, Jones DH, Brown MJI, Stott JP. Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups. Monthly Notices of the Royal Astronomical Society. 2017 Jan;464(1):480-490. Epub 2016 Sept 7. doi: 10.1093/mnras/stw2228

Author

Crossett, Jacob P. ; Pimbblet, Kevin A. ; Jones, D. Heath et al. / Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 464, No. 1. pp. 480-490.

Bibtex

@article{d0bb5cf2cc2a4ab4ae15dfa21671f818,
title = "Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups",
abstract = "We have investigated the effect of group environment on residual star formation in galaxies, using Galaxy Evolution Explorer near-ultraviolet (NUV) galaxy photometry with the Sloan Digital Sky Survey group catalogue of Yang et al. We compared the (NUV - r) colours of grouped and non-grouped galaxies, and find a significant increase in the fraction of red sequence galaxies with blue (NUV - r) colours outside of groups. When comparing galaxies in mass-matched samples of satellite (non-central), and non-grouped galaxies, we found a >4 sigma difference in the distribution of (NUV - r) colours, and an (NUV - r) blue fraction >3 sigma higher outside groups. A comparison of satellite and non-grouped samples has found the NUV fraction is a factor of similar to 2 lower for satellite galaxies between 10(10.5) and 10(10.7)M(circle dot), showing that higher mass galaxies are more likely to have residual star formation when not influenced by a group potential. There was a higher (NUV - r) blue fraction of galaxies with lower Sersic indices (n <3) outside of groups, not seen in the satellite sample. We have used stellar population models of Bruzual & Charlot with multiple burst, or exponentially declining star formation histories to find that many of the (NUV - r) blue non-grouped galaxies can be explained by a slow (similar to 2 Gyr) decay of star formation, compared to the satellite galaxies. We suggest that taken together, the difference in (NUV - r) colours between samples can be explained by a population of secularly evolving, non-grouped galaxies, where star formation declines slowly. This slow channel is less prevalent in group environments where more rapid quenching can occur.",
keywords = "galaxies:evolution, galaxies:groups:general, galaxies:photometry, galaxies:star formation, galaxies:stellar content, ultraviolet:galaxies, COLOR-MAGNITUDE RELATION, MASS ASSEMBLY GAMA, STAR-FORMATION HISTORIES, RED-SEQUENCE GALAXIES, CLUSTER GALAXIES, S0 GALAXIES, ELLIPTIC GALAXIES, FORMATION RATES, GREEN VALLEY, ENERGY-DISTRIBUTIONS",
author = "Crossett, {Jacob P.} and Pimbblet, {Kevin A.} and Jones, {D. Heath} and Brown, {Michael J. I.} and Stott, {John P.}",
year = "2017",
month = jan,
doi = "10.1093/mnras/stw2228",
language = "English",
volume = "464",
pages = "480--490",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - Near-ultraviolet signatures of environment-driven galaxy quenching in Sloan Digital Sky Survey groups

AU - Crossett, Jacob P.

AU - Pimbblet, Kevin A.

AU - Jones, D. Heath

AU - Brown, Michael J. I.

AU - Stott, John P.

PY - 2017/1

Y1 - 2017/1

N2 - We have investigated the effect of group environment on residual star formation in galaxies, using Galaxy Evolution Explorer near-ultraviolet (NUV) galaxy photometry with the Sloan Digital Sky Survey group catalogue of Yang et al. We compared the (NUV - r) colours of grouped and non-grouped galaxies, and find a significant increase in the fraction of red sequence galaxies with blue (NUV - r) colours outside of groups. When comparing galaxies in mass-matched samples of satellite (non-central), and non-grouped galaxies, we found a >4 sigma difference in the distribution of (NUV - r) colours, and an (NUV - r) blue fraction >3 sigma higher outside groups. A comparison of satellite and non-grouped samples has found the NUV fraction is a factor of similar to 2 lower for satellite galaxies between 10(10.5) and 10(10.7)M(circle dot), showing that higher mass galaxies are more likely to have residual star formation when not influenced by a group potential. There was a higher (NUV - r) blue fraction of galaxies with lower Sersic indices (n <3) outside of groups, not seen in the satellite sample. We have used stellar population models of Bruzual & Charlot with multiple burst, or exponentially declining star formation histories to find that many of the (NUV - r) blue non-grouped galaxies can be explained by a slow (similar to 2 Gyr) decay of star formation, compared to the satellite galaxies. We suggest that taken together, the difference in (NUV - r) colours between samples can be explained by a population of secularly evolving, non-grouped galaxies, where star formation declines slowly. This slow channel is less prevalent in group environments where more rapid quenching can occur.

AB - We have investigated the effect of group environment on residual star formation in galaxies, using Galaxy Evolution Explorer near-ultraviolet (NUV) galaxy photometry with the Sloan Digital Sky Survey group catalogue of Yang et al. We compared the (NUV - r) colours of grouped and non-grouped galaxies, and find a significant increase in the fraction of red sequence galaxies with blue (NUV - r) colours outside of groups. When comparing galaxies in mass-matched samples of satellite (non-central), and non-grouped galaxies, we found a >4 sigma difference in the distribution of (NUV - r) colours, and an (NUV - r) blue fraction >3 sigma higher outside groups. A comparison of satellite and non-grouped samples has found the NUV fraction is a factor of similar to 2 lower for satellite galaxies between 10(10.5) and 10(10.7)M(circle dot), showing that higher mass galaxies are more likely to have residual star formation when not influenced by a group potential. There was a higher (NUV - r) blue fraction of galaxies with lower Sersic indices (n <3) outside of groups, not seen in the satellite sample. We have used stellar population models of Bruzual & Charlot with multiple burst, or exponentially declining star formation histories to find that many of the (NUV - r) blue non-grouped galaxies can be explained by a slow (similar to 2 Gyr) decay of star formation, compared to the satellite galaxies. We suggest that taken together, the difference in (NUV - r) colours between samples can be explained by a population of secularly evolving, non-grouped galaxies, where star formation declines slowly. This slow channel is less prevalent in group environments where more rapid quenching can occur.

KW - galaxies:evolution

KW - galaxies:groups:general

KW - galaxies:photometry

KW - galaxies:star formation

KW - galaxies:stellar content

KW - ultraviolet:galaxies

KW - COLOR-MAGNITUDE RELATION

KW - MASS ASSEMBLY GAMA

KW - STAR-FORMATION HISTORIES

KW - RED-SEQUENCE GALAXIES

KW - CLUSTER GALAXIES

KW - S0 GALAXIES

KW - ELLIPTIC GALAXIES

KW - FORMATION RATES

KW - GREEN VALLEY

KW - ENERGY-DISTRIBUTIONS

U2 - 10.1093/mnras/stw2228

DO - 10.1093/mnras/stw2228

M3 - Journal article

VL - 464

SP - 480

EP - 490

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -