10.5281/zenodo.1481585
https://zenodo.org/records/1481585
oai:zenodo.org:1481585
Sweet, Sarah M.
Sarah M.
Sweet
0000-0002-1576-2505
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
Fisher, Deanne B.
Deanne B.
Fisher
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
Glazebrook, Karl
Karl
Glazebrook
0000-0002-3254-9044
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
Obreschkow, Danail
Danail
Obreschkow
0000-0002-1527-0762
International Centre for Radio Astronomy Research, University of Western Australia, 7 Fairway, Crawley, WA 6009, Australia
Lagos, Claudia D. P.
Claudia D. P.
Lagos
0000-0003-3021-8564
International Centre for Radio Astronomy Research, University of Western Australia, 7 Fairway, Crawley, WA 6009, Australia
Wang, Liang
Liang
Wang
0000-0003-3529-1680
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
Spatially Resolved Galaxy Angular Momentum
Zenodo
2018
2018-11-09
10.5281/zenodo.1481584
https://zenodo.org/communities/astronomy-general
Creative Commons Attribution 4.0 International
The total specific angular momentum j of a galaxy disk is matched with that of its dark matter halo, but the distributions are different, in that there is a lack of both low- and high-j baryons with respect to the CDM predictions. We illustrate how the probability distribution function pdf(j) can inform us of a galaxy's morphology and evolutionary history with a spanning set of examples from present-day galaxies and a galaxy at z~1.5. The shape of pdf(j) is correlated with photometric morphology, with disk-dominated galaxies having more symmetric pdf(j) and bulge-dominated galaxies having a strongly-skewed pdf(j). Galaxies with bigger bulges have more strongly-tailed \pdf(j), but disks of all sizes have a similar pdf(j). In future, pdf(j) will be useful as a kinematic decomposition tool.