The SAMI Galaxy Survey: trends in [α/Fe] as a function of morphology and environment

• Published in: Monthly Notices of the Royal Astronomical Society
• Main Authors: Watson, Peter J, Davies, Roger L, Brough, Sarah, Croom, Scott M, D’Eugenio, Francesco, Glazebrook, Karl, Groves, Brent, López-Sánchez, Ángel R, van de Sande, Jesse, Scott, Nicholas, Vaughan, Sam P, Walcher, Jakob, Bland-Hawthorn, Joss, Bryant, Julia J, Goodwin, Michael, Lawrence, Jon S, Lorente, Nuria P F, Owers, Matt S, Richards, Samuel
• Other Authors: Australian Research Council, Science and Technology Facilities Council, Horizon 2020 European Research Council
• Format: Article in Journal/Newspaper
• Language: English
• Published: Oxford University Press (OUP) 2021
• Subjects: Space and Planetary Science; Astronomy and Astrophysics; Hubble; sami
• Online Access: http://dx.doi.org/10.1093/mnras/stab3477; https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stab3477/41429143/stab3477.pdf; https://academic.oup.com/mnras/article-pdf/510/1/1541/41988573/stab3477.pdf

ABSTRACT We present a new set of index-based measurements of [α/Fe] for a sample of 2093 galaxies in the SAMI Galaxy Survey. Following earlier work, we fit a global relation between [α/Fe] and the galaxy velocity dispersion σ for red sequence galaxies, $[\alpha /\text{Fe}]=(0.378\pm 0.009)\rm {log}_...