KROSS-SAMI:a direct IFS comparison of the Tully–Fisher relation across 8 Gyr since z ≈ 1

• Published in: Monthly Notices of the Royal Astronomical Society
• Main Authors: 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.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2019
• Subjects: galaxies: evolution; galaxies: general; galaxies: kinematics and dynamics; galaxies: star formation; Kross; Zero Point; sami
• Online Access: https://researchers.mq.edu.au/en/publications/6bb96300-e676-495a-89a5-bd5f6b461184; https://doi.org/10.1093/mnras/sty2794; http://purl.org/au-research/grants/arc/CE170100013; http://www.scopus.com/inward/record.url?scp=85066936408&partnerID=8YFLogxK

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.