The SAMI Galaxy Survey: understanding observations of large-scale outflows at low redshift with EAGLE simulations

E. Tescari, L. Cortese, C. Power, J. S. B. Wyithe, I. -T. Ho, R. A. Crain, J. Bland-Hawthorn, S. M. Croom, L. J. Kewley, J. Schaye, R. G. Bower, T. Theuns, M. Schaller, L. Barnes, S. Brough, J. J. Bryant, M. Goodwin, M. L. P. Gunawardhana, J. S. Lawrence, S. K. LeslieA. R. Lopez-Sanchez, N. P. F. Lorente, A. M. Medling, S. N. Richards, S. M. Sweet, C. Tonini

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This work presents a study of galactic outflows driven by stellar feedback. We extract main-sequence disc galaxies with stellar mass 10(9) 150 km s(-1). Although supernova-driven galactic winds in the EAGLE simulations may not entrain enough gas with T <10(5) K compared to observed galaxies, we find that gas temperature is a good proxy for the presence of outflows. There is a direct correlation between the thermal state of the gas and its state of motion as described by the sigma-distribution. The following equivalence relations hold in EAGLE: (i) low-sigma peak double left right arrow disc of the galaxy double left right arrow gas with T <10(5) K; (ii) high-sigma tail double left right arrow galactic winds double left right arrow gas with T >= 10(5) K.

Original languageEnglish
Pages (from-to)380-397
Number of pages18
JournalMonthly Notices of the Royal Astronomical Society
Volume473
Issue number1
DOIs
Publication statusPublished - Jan 2018

Cite this

Tescari, E., Cortese, L., Power, C., Wyithe, J. S. B., Ho, I. -T., Crain, R. A., Bland-Hawthorn, J., Croom, S. M., Kewley, L. J., Schaye, J., Bower, R. G., Theuns, T., Schaller, M., Barnes, L., Brough, S., Bryant, J. J., Goodwin, M., Gunawardhana, M. L. P., Lawrence, J. S., ... Tonini, C. (2018). The SAMI Galaxy Survey: understanding observations of large-scale outflows at low redshift with EAGLE simulations. Monthly Notices of the Royal Astronomical Society, 473(1), 380-397. https://doi.org/10.1093/mnras/stx2315