KROSS-SAMI: A Direct IFS Comparison of the Tully-Fisher Relation Across 8 Gyr Since z ≈ 1

Tiley, A.L.; Bureau, M.; Cortese, L.; Harrison, C.M.; Johnson, H.L.; Stott, J.P.; Swinbank, A.M.; Smail, I.; Sobral, D.; Bunker, A.J.; Glazebrook, K.; Bower, R.G.; Obreschkow, D.; Bryant, J.J.; Jarvis, M.J.; Bland-Hawthorn, J.; Magdis, G.; Medling, A.M.; Sweet, S.M.; Tonini, C.; Turner, O.J.; Sharples, R.M.; Croom, S.M.; Goodwin, M.; Konstantopoulos, I.S.; Lorente, N.P.F.; Lawrence, J.S.; Mould, J.; Owers, M.S.; Richards, S.N.

Abstract

We construct Tully–Fisher relations (TFRs), from large samples of galaxies with spatially resolved H α emission maps from the K-band Multi-Object Spectrograph (KMOS) Redshift One Spectroscopic Survey (KROSS) at z ≈ 1. We compare these to data from the Sydney-Australian-Astronomical-Observatory Multi-object Integral-Field Spectrograph (SAMI) Galaxy Survey at z ≈ 0. We stringently match the data quality of the latter to the former, and apply identical analysis methods and sub-sample selection criteria to both to conduct a direct comparison of the absolute K-band magnitude and stellar mass TFRs at z ≈ 1 and 0. We find that matching the quality of the SAMI data to that of KROSS results in TFRs that differ significantly in slope, zero-point, and (sometimes) scatter in comparison to the corresponding original SAMI relations. These differences are in every case as large as or larger than the differences between the KROSS z ≈ 1 and matched SAMI z ≈ 0 relations. Accounting for these differences, we compare the TFRs at z ≈ 1 and 0. For disc-like, star-forming galaxies we find no significant difference in the TFR zero-points between the two epochs. This suggests the growth of stellar mass and dark matter in these types of galaxies is intimately linked over this ≈8 Gyr period.

Citation

Tiley, A., Bureau, M., Cortese, L., Harrison, C., Johnson, H., Stott, J., …Richards, S. (2019). KROSS-SAMI: A Direct IFS Comparison of the Tully-Fisher Relation Across 8 Gyr Since z ≈ 1. Monthly Notices of the Royal Astronomical Society, 482(2), 2166-2188. https://doi.org/10.1093/mnras/sty2794

• Journal Article Type: Article
• Acceptance Date: Oct 15, 2018
• Online Publication Date: Oct 17, 2018
• Publication Date: Jan 11, 2019
• Deposit Date: Nov 21, 2018
• Publicly Available Date: Nov 21, 2018
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Royal Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 482
• Issue: 2
• Pages: 2166-2188
• DOI: https://doi.org/10.1093/mnras/sty2794
• Public URL: https://durham-repository.worktribe.com/output/1342955