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Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies

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Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies. / Géron, T.; Smethurst, R.J.; Lintott, C.; Kruk, S.; Masters, K.L.; Simmons, B.; Stark, D.V.

In: Monthly Notices of the Royal Astronomical Society, Vol. 507, No. 3, 30.11.2021, p. 4389-4408.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Géron, T, Smethurst, RJ, Lintott, C, Kruk, S, Masters, KL, Simmons, B & Stark, DV 2021, 'Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies', Monthly Notices of the Royal Astronomical Society, vol. 507, no. 3, pp. 4389-4408. https://doi.org/10.1093/mnras/stab2064

APA

Géron, T., Smethurst, R. J., Lintott, C., Kruk, S., Masters, K. L., Simmons, B., & Stark, D. V. (2021). Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies. Monthly Notices of the Royal Astronomical Society, 507(3), 4389-4408. https://doi.org/10.1093/mnras/stab2064

Vancouver

Géron T, Smethurst RJ, Lintott C, Kruk S, Masters KL, Simmons B et al. Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies. Monthly Notices of the Royal Astronomical Society. 2021 Nov 30;507(3):4389-4408. https://doi.org/10.1093/mnras/stab2064

Author

Géron, T. ; Smethurst, R.J. ; Lintott, C. ; Kruk, S. ; Masters, K.L. ; Simmons, B. ; Stark, D.V. / Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies. In: Monthly Notices of the Royal Astronomical Society. 2021 ; Vol. 507, No. 3. pp. 4389-4408.

Bibtex

@article{a21232ba0a914aaea99af568519333f3,
title = "Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies",
abstract = "We have used Galaxy Zoo DECaLS (GZD) to study strong and weak bars in disc galaxies. Out of the 314 000 galaxies in GZD, we created a volume-limited sample (0.01 <z <0.05, Mr <- 18.96) which contains 1867 galaxies with reliable volunteer bar classifications in the ALFALFA footprint. In keeping with previous Galaxy Zoo surveys (such as GZ2), the morphological classifications from GZD agree well with previous morphological surveys. GZD considers galaxies to either have a strong bar (15.5 per cent), a weak bar (28.1 per cent) or no bar (56.4 per cent), based on volunteer classifications on images obtained from the DECaLS survey. This places GZD in a unique position to assess differences between strong and weak bars. We find that the strong bar fraction is typically higher in quiescent galaxies than in star-forming galaxies, while the weak bar fraction is similar. Moreover, we have found that strong bars facilitate the quenching process in star-forming galaxies, finding higher fibre star formation rates (SFRs), lower gas masses, and shorter depletion time-scales in these galaxies compared to unbarred galaxies. However, we also found that any differences between strong and weak bars disappear when controlling for bar length. Based on this, we conclude that weak and strong bars are not fundamentally different phenomena. Instead, we propose that there is a continuum of bar types, which varies from 'weakest' to 'strongest'.  ",
keywords = "galaxies: bar, galaxies: evolution, galaxies: general, galaxies: star formation, galaxies: structure",
author = "T. G{\'e}ron and R.J. Smethurst and C. Lintott and S. Kruk and K.L. Masters and B. Simmons and D.V. Stark",
year = "2021",
month = nov,
day = "30",
doi = "10.1093/mnras/stab2064",
language = "English",
volume = "507",
pages = "4389--4408",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "3",

}

RIS

TY - JOUR

T1 - Galaxy zoo: Stronger bars facilitate quenching in star-forming galaxies

AU - Géron, T.

AU - Smethurst, R.J.

AU - Lintott, C.

AU - Kruk, S.

AU - Masters, K.L.

AU - Simmons, B.

AU - Stark, D.V.

PY - 2021/11/30

Y1 - 2021/11/30

N2 - We have used Galaxy Zoo DECaLS (GZD) to study strong and weak bars in disc galaxies. Out of the 314 000 galaxies in GZD, we created a volume-limited sample (0.01 <z <0.05, Mr <- 18.96) which contains 1867 galaxies with reliable volunteer bar classifications in the ALFALFA footprint. In keeping with previous Galaxy Zoo surveys (such as GZ2), the morphological classifications from GZD agree well with previous morphological surveys. GZD considers galaxies to either have a strong bar (15.5 per cent), a weak bar (28.1 per cent) or no bar (56.4 per cent), based on volunteer classifications on images obtained from the DECaLS survey. This places GZD in a unique position to assess differences between strong and weak bars. We find that the strong bar fraction is typically higher in quiescent galaxies than in star-forming galaxies, while the weak bar fraction is similar. Moreover, we have found that strong bars facilitate the quenching process in star-forming galaxies, finding higher fibre star formation rates (SFRs), lower gas masses, and shorter depletion time-scales in these galaxies compared to unbarred galaxies. However, we also found that any differences between strong and weak bars disappear when controlling for bar length. Based on this, we conclude that weak and strong bars are not fundamentally different phenomena. Instead, we propose that there is a continuum of bar types, which varies from 'weakest' to 'strongest'.  

AB - We have used Galaxy Zoo DECaLS (GZD) to study strong and weak bars in disc galaxies. Out of the 314 000 galaxies in GZD, we created a volume-limited sample (0.01 <z <0.05, Mr <- 18.96) which contains 1867 galaxies with reliable volunteer bar classifications in the ALFALFA footprint. In keeping with previous Galaxy Zoo surveys (such as GZ2), the morphological classifications from GZD agree well with previous morphological surveys. GZD considers galaxies to either have a strong bar (15.5 per cent), a weak bar (28.1 per cent) or no bar (56.4 per cent), based on volunteer classifications on images obtained from the DECaLS survey. This places GZD in a unique position to assess differences between strong and weak bars. We find that the strong bar fraction is typically higher in quiescent galaxies than in star-forming galaxies, while the weak bar fraction is similar. Moreover, we have found that strong bars facilitate the quenching process in star-forming galaxies, finding higher fibre star formation rates (SFRs), lower gas masses, and shorter depletion time-scales in these galaxies compared to unbarred galaxies. However, we also found that any differences between strong and weak bars disappear when controlling for bar length. Based on this, we conclude that weak and strong bars are not fundamentally different phenomena. Instead, we propose that there is a continuum of bar types, which varies from 'weakest' to 'strongest'.  

KW - galaxies: bar

KW - galaxies: evolution

KW - galaxies: general

KW - galaxies: star formation

KW - galaxies: structure

U2 - 10.1093/mnras/stab2064

DO - 10.1093/mnras/stab2064

M3 - Journal article

VL - 507

SP - 4389

EP - 4408

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -