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The KMOS Redshift One Spectroscopic Survey (KROSS): The origin of disc turbulence in z≈1 star-forming galaxies

Johnson, Helen L; Harrison, Chris M; Swinbank, A M; Tiley, Alfred L; Stott, J.P; Bower, Richard; Smail, Ian; Bunker, Andrew; Sobral, David; Turner, O J; Federrath, Christoph; Medling, Anne; Bureau, M; Jarvis, M J; Bland-Hawthorn, Joss; Bryant, J.; Konstantopoulos, I S; Lawrence, J S


We analyse the velocity dispersion properties of 472 z~0.9 star-forming galaxies observed as part of the KMOS Redshift One Spectroscopic Survey (KROSS). The majority of this sample is rotationally dominated (83 ± 5 per cent with vC/σ0 > 1) but also dynamically hot and highly turbulent. After correcting for beam smearing effects, the median intrinsic velocity dispersion for the final sample is σ0 =43.2 ± 0.8 kms-1 with a rotational velocity to dispersion ratio of vC/σ0 =2.6 ± 0.1. To explore the...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/MNRAS/STX3016
Access Rights: Open Access


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