Galaxy formation and evolution

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Probing computational methodologies in predicting mid-infrared spectra for large polycyclic aromatic hydrocarbons

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:3 (2022) 3663-3681

Authors:

B Kerkeni, I García-Bernete, D Rigopoulou, DP Tew, PF Roche, DC Clary
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The ALMA REBELS Survey: cosmic dust temperature evolution out to z ∼ 7

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:3 (2022) 3122-3135

Authors:

L Sommovigo, A Ferrara, A Pallottini, P Dayal, RJ Bouwens, R Smit, E da Cunha, I De Looze, RAA Bowler, J Hodge, H Inami, P Oesch, R Endsley, V Gonzalez, S Schouws, D Stark, M Stefanon, M Aravena, L Graziani, D Riechers, R Schneider, P van der Werf, H Algera, L Barrufet, Y Fudamoto, APS Hygate, I Labbé, Y Li, T Nanayakkara, M Topping
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Being KLEVER at cosmic noon: Ionized gas outflows are inconspicuous in low-mass star-forming galaxies but prominent in massive AGN hosts

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:2 (2022) 2535-2562

Authors:

Alice Concas, Roberto Maiolino, Mirko Curti, Connor Hayden-Pawson, Michele Cirasuolo, Gareth C Jones, Amata Mercurio, Francesco Belfiore, Giovanni Cresci, Fergus Cullen, Filippo Mannucci, Alessandro Marconi, Michele Cappellari, Claudia Cicone, Yingjie Peng, Paulina Troncoso
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EDGE: The sensitivity of ultra-faint dwarfs to a metallicity-dependent initial mass function

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:2 (2022) 2326-2334

Authors:

Mateo Prgomet, Martin P Rey, Eric P Andersson, Alvaro Segovia Otero, Oscar Agertz, Florent Renaud, Andrew Pontzen, Justin I Read
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The SAMI Galaxy Survey: the link between [α/Fe] and kinematic morphology

Monthly Notices of the Royal Astronomical Society Oxford University Press 513:4 (2022) 5076-5087

Authors:

Peter J Watson, Roger L Davies, Jesse van de Sande, Sarah Brough, Scott M Croom, Francesco D'Eugenio, Karl Glazebrook, Brent Groves, Angel R Lopez-Sanchez, Nicholas Scott, Sam P Vaughan, C Jakob Walcher, Joss Bland-Hawthorn, Julia J Bryant, Michael Goodwin, Jon S Lawrence, Nuria PF Lorente, Matt S Owers, Samuel Richards

Abstract:

We explore a sample of 1492 galaxies with measurements of the mean stellar population properties and the spin parameter proxy, λRe⁠, drawn from the SAMI Galaxy Survey. We fit a global [α/Fe]–σ relation, finding that [α/Fe]=(0.395±0.010)log10(σ)−(0.627±0.002)⁠. We observe an anti-correlation between the residuals Δ[α/Fe] and the inclination-corrected λeoRe⁠, which can be expressed as Δ[α/Fe]=(−0.057±0.008)λeoRe+(0.020±0.003)⁠. The anti-correlation appears to be driven by star-forming galaxies, with a gradient of Δ[α/Fe]∼(−0.121±0.015)λeoRe⁠, although a weak relationship persists for the subsample of galaxies for which star formation has been quenched. We take this to be confirmation that disc-dominated galaxies have an extended duration of star formation. At a reference velocity dispersion of 200 km s−1, we estimate an increase in half-mass formation time from ∼0.5 Gyr to ∼1.2 Gyr from low- to high-λeoRe galaxies. Slow rotators do not appear to fit these trends. Their residual α-enhancement is indistinguishable from other galaxies with λeoRe⪅0.4⁠, despite being both larger and more massive. This result shows that galaxies with λeoRe⪅0.4 experience a similar range of star formation histories, despite their different physical structure and angular momentum.
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