Properties of barred galaxies in the MaNGA galaxy survey

Amelia Fraser-Mckelvie, Michael Merrifield, Alfonso Aragón-Salamanca, Karen Masters

Research output: Contribution to journalReview articlepeer-review

Abstract

We present the initial results of a census of 684 barred galaxies in the MaNGA galaxy survey. This large sample contains galaxies with a wide range of physical properties, and we attempt to link bar properties to key observables for the whole galaxy. We find the length of the bar, when normalised for galaxy size, is correlated with the distance of the galaxy from the star formation main sequence, with more passive galaxies hosting larger-scale bars. Ionised gas is observed along the bars of low-mass galaxies only, and these galaxies are generally star-forming and host short bars. Higher-mass galaxies do not contain Hα emission along their bars, however, but are more likely to host rings or Hα at the centre and ends of the bar. Our results suggest that different physical processes are at play in the formation and evolution of bars in low-and high-mass galaxies.

Original languageEnglish
Pages (from-to)226-230
Number of pages5
JournalProceedings of the International Astronomical Union
Volume14
Issue numberS353
DOIs
Publication statusPublished - 2019
Externally publishedYes

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