Professor Roger Davies: Publications

Kiloparsec view of a typical star-forming galaxy when the Universe was ∼1 Gyr old

Astronomy & Astrophysics EDP Sciences 665 (2022) l8

Authors:

R Herrera-Camus, NM Förster Schreiber, SH Price, H Übler, AD Bolatto, RL Davies, D Fisher, R Genzel, D Lutz, T Naab, A Nestor, T Shimizu, A Sternberg, L Tacconi, K Tadaki

EAS 2022 takes positive steps forward for sustainable astronomy

Nature Astronomy Springer Nature 6:7 (2022) 765-765

Authors:

Antoaneta Antonova, Maarten Baes, Andreas Burkert, Roger L Davies, Inma Dominguez, Lex Kaper, Nick D Kylafis, Sara Lucatello, Georges Meylan, Agata Różańska

The SAMI Galaxy Survey: the link between [α/Fe] and kinematic morphology

Monthly Notices of the Royal Astronomical Society 91̽�� 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.

The SAMI Galaxy Survey: The Internal Orbital Structure and Mass Distribution of Passive Galaxies from Triaxial Orbit-superposition Schwarzschild Models

The Astrophysical Journal American Astronomical Society 930:2 (2022) 153

Authors:

Giulia Santucci, Sarah Brough, Jesse van de Sande, Richard M McDermid, Glenn van de Ven, Ling Zhu, Francesco D’Eugenio, Joss Bland-Hawthorn, Stefania Barsanti, Julia J Bryant, Scott M Croom, Roger L Davies, Andrew W Green, Jon S Lawrence, Nuria PF Lorente, Matt S Owers, Adriano Poci, Samuel N Richards, Sabine Thater, Sukyoung Yi

The seventeenth data release of the sloan digital sky surveys: complete release of MaNGA, MaStar, and APOGEE-2 data

Astrophysical Journal Supplement American Astronomical Society 259:2 (2022) 35

Authors:

Abdurro'uf, Katherine Accetta, Conny Aerts, Victor Silva Aguirre, Romina Ahumada, Nikhil Ajgaonkar, N Filiz Ak, Shadab Alam, Carlos Allende Prieto, Andres Almeida, Friedrich Anders, Scott F Anderson, Brett H Andrews, Borja Anguiano, Erik Aquino-Ortiz, Alfonso Aragon-Salamanca, Maria Argudo-Fernandez, Metin Ata, Marie Aubert, Vladimir Avila-Reese, Carles Badenes, Rodolfo H Barba, Kat Barger, Jorge K Barrera-Ballesteros, Rachael L Beaton, Timothy C Beers, Francesco Belfiore, Chad F Bender, Mariangela Bernardi, Matthew A Bershady, Florian Beutler, Christian Moni Bidin, Jonathan C Bird, Dmitry Bizyaev, Guillermo A Blanc, Michael R Blanton, Nicholas Fraser Boardman, Adam S Bolton, Mederic Boquien, Jura Borissova, Jo Bovy, Wn Brandt, Jordan Brown, Joel R Brownstein, Marcella Brusa, Johannes Buchner, Kevin Bundy, Joseph N Burchett, Martin Bureau, Adam Burgasser

Abstract:

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal of surveying over 10,000 nearby galaxies. The complete release of the MaNGA Stellar Library accompanies this data, providing observations of almost 30,000 stars through the MaNGA instrument during bright time. DR17 also contains the complete release of the Apache Point Observatory Galactic Evolution Experiment 2 survey that publicly releases infrared spectra of over 650,000 stars. The main sample from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), as well as the subsurvey Time Domain Spectroscopic Survey data were fully released in DR16. New single-fiber optical spectroscopy released in DR17 is from the SPectroscipic IDentification of ERosita Survey subsurvey and the eBOSS-RM program. Along with the primary data sets, DR17 includes 25 new or updated value-added catalogs. This paper concludes the release of SDSS-IV survey data. SDSS continues into its fifth phase with observations already underway for the Milky Way Mapper, Local Volume Mapper, and Black Hole Mapper surveys.

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