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Time-slicing spiral galaxies with SDSS-IV MaNGA


Thomas Peterken

Amelia Fraser-Mckelvie

Katarina Kraljic

Johan H Knapen


Joel Brownstein

Niv Drory


Spectra of galaxies contain a wealth of information about the stellar populations from which they are made. With integral-field unit (IFU) surveys, such data can be used to map out stellar population properties across the face of a galaxy, allowing one to go beyond simple radial profiles and study details of non-axisymmetric structure. To-date, however, such studies have been limited by the quality of available data and the power of spectral analysis tools. We now take the next step and study the barred spiral galaxy MCG+07-28-064 from observations obtained as part of the SDSS-IV MaNGA project. We find that we can decompose this galaxy into "time slices," which reveal the varying contributions that stars of differing ages make to its bar and spiral structure, offering new insight into the evolution of these features. We find evidence for the ongoing growth of the bar, including the most recent star formation on its leading edge, and for the underlying density wave responsible for spiral structure. This pilot study indicates that there is a wealth of untapped information on the spatial distribution of SFHs available in the current generation of IFU galaxy surveys.


Peterken, T., Fraser-Mckelvie, A., Aragón-Salamanca, A., Merrifield, M., Kraljic, K., Knapen, J. H., …Drory, N. (2019). Time-slicing spiral galaxies with SDSS-IV MaNGA. Monthly Notices of the Royal Astronomical Society, 489(1), 1338–1343.

Journal Article Type Article
Acceptance Date Aug 6, 2019
Online Publication Date Aug 12, 2019
Publication Date 2019-10
Deposit Date Aug 16, 2019
Publicly Available Date Aug 16, 2019
Print ISSN 0035-8711
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 489
Issue 1
Pages 1338–1343
Public URL
Publisher URL
Additional Information This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Thomas Peterken, Amelia Fraser-McKelvie, Alfonso Aragón-Salamanca, Michael Merrifield, Katarina Kraljic, Johan H Knapen, Rogério Riffel, Joel Brownstein, Niv Drory, Time-slicing spiral galaxies with SDSS-IV MaNGA, Monthly Notices of the Royal Astronomical Society, Volume 489, Issue 1, October 2019, Pages 1338–1343 is available online at:


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