Time-slicing spiral galaxies with SDSS-IV MaNGA

Peterken, Thomas; Fraser-Mckelvie, Amelia; Arag�n-Salamanca, Alfonso; Merrifield, Michael; Kraljic, Katarina; Knapen, Johan H; Riffel, Rog�rio; Brownstein, Joel; Drory, Niv

Abstract

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.

Citation

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. https://doi.org/10.1093/mnras/stz2204/5548799

• 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
• DOI: https://doi.org/10.1093/mnras/stz2204/5548799
• Public URL: https://nottingham-repository.worktribe.com/output/2441119
• Publisher URL: https://academic.oup.com/mnras/article/489/1/1338/5548799
• 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: https://academic.oup.com/mnras/article/489/1/1338/5548799