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Properties of barred galaxies in the MaNGA galaxy survey

Published online by Cambridge University Press:  14 May 2020

Amelia Fraser-McKelvie Open the ORCID record for Amelia Fraser-McKelvie [Opens in a new window] ,
Michael Merrifield ,
Alfonso Aragón-Salamanca ,
Karen Masters  and
the MaNGA Survey Team
Amelia Fraser-McKelvie
Affiliation:
School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, U.K. email: [email protected]
Michael Merrifield
Affiliation:
School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, U.K. email: [email protected]
Alfonso Aragón-Salamanca
Affiliation:
School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, U.K. email: [email protected]
Karen Masters
Affiliation:
Department of Physics and Astronomy, Haverford College, 370 Lancaster Ave, Haverford, PA19041, U.S.A.
Rights & Permissions [Opens in a new window]

Abstract

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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.

Keywords

galaxies: evolutiongalaxies: generalgalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 226 - 230
Copyright
© International Astronomical Union 2020

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