Hostname: page-component-745bb68f8f-lrblm Total loading time: 0 Render date: 2025-01-11T09:45:21.740Z Has data issue: false hasContentIssue false
  • English
  • Français

Is star formation in gas-rich bars suppressed?

Published online by Cambridge University Press:  09 June 2023

Fumiya Maeda Open the ORCID record for Fumiya Maeda [Opens in a new window]
Fumiya Maeda*
Affiliation:
Institute of Astronomy, Graduate School of Science, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Whether the star formation efficiency (SFE) in the bar region is lower than those in the other regions in a barred galaxy has recently been debated. We statistically investigate the SFEs along the bars in nearby gas-rich massive star-forming barred galaxies by distinguishing the center, bar-end, and bar regions for the first time. The molecular gas surface density is derived from archival CO(1–0) and/or CO(2–1) data and the star formation rate surface density is derived from a linear combination of far-ultraviolet and mid-infrared intensities. To distinguish the three regions, we targeted 18 galaxies with a large apparent bar length (≥ 75"). The resulting SFE in the bars is about 0.6 – 0.8 times lower than that in the disks, which suggests the star formation in the bars tends to be systematically suppressed.

Keywords

galaxies: ISMgalaxies: structure
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 207 - 209
Check for updates
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

Daz-Garca, S. et al. 2021, A&A, 654, A135 Google Scholar
Hirota, A. et al. 2014, PASJ, 66, 46 10.1093/pasj/psu006CrossRefGoogle Scholar
Maeda, F. et al. 2020, MNRAS, 495, 3840 10.1093/mnras/staa1296CrossRefGoogle Scholar
Muraoka, K. et al. 2019, PASJ, 71, S15 10.1093/pasj/psz015CrossRefGoogle Scholar
Querejeta, M. et al. 2021, A&A, 656Google Scholar
Yajima, Y. et al. 2019, PASJ, 71, S13 10.1093/pasj/psz022CrossRefGoogle Scholar