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Title: Effect of bars on evolution of SDSS spiral galaxies

Abstract

ABSTRACT We explore the significance of bars in triggering central star formation (SF) and active galactic nucleus (AGN) activity for spiral galaxy evolution using a volume-limited sample with 0.020 < z < 0.055, Mr < −19.5, and σ > 70 km s−1 selected from Sloan Digital Sky Survey Data Release 7. On a central SF rate–σ plane, we measure the fraction of galaxies with strong bars in our sample and also the AGN fractions for barred and non-barred galaxies, respectively. The comparison between the bar and AGN fractions reveals a causal connection between the two phenomena of SF quenching and AGN activity. A massive black hole and abundant gas fuels are sufficient conditions to trigger AGNs. We infer that the AGNs triggered by satisfying the two conditions drive the strong AGN feedback, suddenly suppressing the central SF and leaving the SF sequence. We find that in galaxies where either of the two conditions is not sufficient, bars are a great help for the AGN triggering, accelerating the entire process of evolution, which is particularly evident in pseudo-bulge galaxies. All of our findings are obtained only when plotted in terms of their central velocity dispersion and central SFR (not galactic scale SFR), indicatingmore » that the AGN-driven SF quenching is confined in the central kpc region.« less

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2]
  1. School of Space Research, Kyung Hee University, Yongin, Gyeonggi 17104, Republic of Korea
  2. School of Space Research, Kyung Hee University, Yongin, Gyeonggi 17104, Republic of Korea, Department of Astronomy and Space Science, Kyung Hee University, Yongin, Gyeonggi 17104, Republic of Korea
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1618499
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 494 Journal Issue: 4; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Kim, Minbae, Choi, Yun-Young, and Kim, Sungsoo S. Effect of bars on evolution of SDSS spiral galaxies. United Kingdom: N. p., 2020. Web. doi:10.1093/mnras/staa1035.
Kim, Minbae, Choi, Yun-Young, & Kim, Sungsoo S. Effect of bars on evolution of SDSS spiral galaxies. United Kingdom. https://doi.org/10.1093/mnras/staa1035
Kim, Minbae, Choi, Yun-Young, and Kim, Sungsoo S. Mon . "Effect of bars on evolution of SDSS spiral galaxies". United Kingdom. https://doi.org/10.1093/mnras/staa1035.
@article{osti_1618499,
title = {Effect of bars on evolution of SDSS spiral galaxies},
author = {Kim, Minbae and Choi, Yun-Young and Kim, Sungsoo S.},
abstractNote = {ABSTRACT We explore the significance of bars in triggering central star formation (SF) and active galactic nucleus (AGN) activity for spiral galaxy evolution using a volume-limited sample with 0.020 < z < 0.055, Mr < −19.5, and σ > 70 km s−1 selected from Sloan Digital Sky Survey Data Release 7. On a central SF rate–σ plane, we measure the fraction of galaxies with strong bars in our sample and also the AGN fractions for barred and non-barred galaxies, respectively. The comparison between the bar and AGN fractions reveals a causal connection between the two phenomena of SF quenching and AGN activity. A massive black hole and abundant gas fuels are sufficient conditions to trigger AGNs. We infer that the AGNs triggered by satisfying the two conditions drive the strong AGN feedback, suddenly suppressing the central SF and leaving the SF sequence. We find that in galaxies where either of the two conditions is not sufficient, bars are a great help for the AGN triggering, accelerating the entire process of evolution, which is particularly evident in pseudo-bulge galaxies. All of our findings are obtained only when plotted in terms of their central velocity dispersion and central SFR (not galactic scale SFR), indicating that the AGN-driven SF quenching is confined in the central kpc region.},
doi = {10.1093/mnras/staa1035},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 4,
volume = 494,
place = {United Kingdom},
year = {Mon Apr 20 00:00:00 EDT 2020},
month = {Mon Apr 20 00:00:00 EDT 2020}
}

Journal Article:
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https://doi.org/10.1093/mnras/staa1035

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