Nicholas Scott
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View article: Progressive Choreiform Movements in a Child: Early Recognition and Management of Sydenham Chorea
Progressive Choreiform Movements in a Child: Early Recognition and Management of Sydenham Chorea Open
This case highlights the diagnostic and management challenges of Sydenham chorea, showcasing its progression from subtle early symptoms to definitive severe choreiform movements. It demonstrates the importance of early recognition, multidi…
View article: TGF-β antagonism synergizes with PPARγ agonism to reduce fibrosis and enhance beige adipogenesis
TGF-β antagonism synergizes with PPARγ agonism to reduce fibrosis and enhance beige adipogenesis Open
Basal and high-fat diet inducible activation of TGF-β underlies the heterogeneity of adipose tissue depots. TGF-β/Smad3 activation promotes adipose tissue fibrosis and suppresses beige progenitors. Together, these dual mechanisms preclude …
View article: The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters Open
Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius are measured. Our sp…
View article: The SAMI–Fornax Dwarfs Survey – III. Evolution of [α/Fe] in dwarfs, from Galaxy Clusters to the Local Group
The SAMI–Fornax Dwarfs Survey – III. Evolution of [α/Fe] in dwarfs, from Galaxy Clusters to the Local Group Open
Using very deep, high spectral resolution data from the SAMI Integral Field Spectrograph, we study the stellar population properties of a sample of dwarf galaxies in the Fornax Cluster, down to a stellar mass of 107 M⊙, which has never bee…
View article: The SAMI-Fornax Dwarfs Survey III: Evolution of [$α$/Fe] in dwarfs, from Galaxy Clusters to the Local Group
The SAMI-Fornax Dwarfs Survey III: Evolution of [$α$/Fe] in dwarfs, from Galaxy Clusters to the Local Group Open
Using very deep, high spectral resolution data from the SAMI Integral Field Spectrograph we study the stellar population properties of a sample of dwarf galaxies in the Fornax Cluster, down to a stellar mass of $10^{7}$ M$_{\odot}$, which …
View article: Comparison of the stellar populations of bulges and discs using the MaNGA survey
Comparison of the stellar populations of bulges and discs using the MaNGA survey Open
We use the MaNGA integral field spectroscopic survey of low-redshift galaxies to compare the stellar populations of the bulge and disc components, identified from their Sérsic profiles, for various samples of galaxies. Bulge-dominated regi…
View article: Comparison of the Stellar Populations of Bulges and Discs using the MaNGA Survey
Comparison of the Stellar Populations of Bulges and Discs using the MaNGA Survey Open
We use the MaNGA integral-field spectroscopic survey of low-redshift galaxies to compare the stellar populations of the bulge and disc components, identified from their Sersic profiles, for various samples of galaxies. Bulge dominated regi…
View article: The SAMI–Fornax Dwarfs Survey – II. The Stellar Mass Fundamental Plane and the dark matter fraction of dwarf galaxies
The SAMI–Fornax Dwarfs Survey – II. The Stellar Mass Fundamental Plane and the dark matter fraction of dwarf galaxies Open
We explore the kinematic scaling relations of 38 dwarf galaxies in the Fornax Cluster using observations from the SAMI integral field spectrograph. We focus on the Fundamental Plane (FP), defined by the physical properties of the objects (…
View article: The SAMI Galaxy Survey: Data Release One with emission-line physics value-added products
The SAMI Galaxy Survey: Data Release One with emission-line physics value-added products Open
We present the first major release of data from the SAMI Galaxy Survey. This data release focuses on the emission-line physics of galaxies. Data Release One includes data for 772 galaxies, about 20 per cent of the full survey. Galaxies inc…
View article: The SAMI Galaxy Survey: Spatially resolving the main sequence of star formation
The SAMI Galaxy Survey: Spatially resolving the main sequence of star formation Open
We present the ~800 star formation rate maps for the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey based on Ha emission maps, corrected for dust attenuation via the Balmer decrement, that are included in the SAMI…
View article: The SAMI galaxy survey: Galaxy size can explain the offset between star-forming and passive galaxies in the mass–metallicity relationship
The SAMI galaxy survey: Galaxy size can explain the offset between star-forming and passive galaxies in the mass–metallicity relationship Open
In this work, we investigate how the central stellar metallicity ([Z/H]) of 1363 galaxies from the SAMI galaxy survey is related to their stellar mass and a proxy for the gravitational potential, $\Phi = \log _{10}\left(\frac{M_*}{M_{\odot…
View article: The SAMI galaxy survey: galaxy size can explain the offset between star-forming and passive galaxies in the mass-metallicity relationship
The SAMI galaxy survey: galaxy size can explain the offset between star-forming and passive galaxies in the mass-metallicity relationship Open
In this work, we investigate how the central stellar metallicity ([Z/H]) of 1363 galaxies from the SAMI galaxy survey is related to their stellar mass and a proxy for the gravitational potential, $Φ$ = log10(M/M*) - log10($r_e$/kpc). In ag…
View article: Reinforcement Learning Based Optimal Adversarial Pathway Estimation Using Remotely Sensed Spectral-Terrain Data and Human Value Assessment
Reinforcement Learning Based Optimal Adversarial Pathway Estimation Using Remotely Sensed Spectral-Terrain Data and Human Value Assessment Open
View article: The SAMI Galaxy Survey: the link between [α/Fe] and kinematic morphology
The SAMI Galaxy Survey: the link between [α/Fe] and kinematic morphology Open
We explore a sample of 1492 galaxies with measurements of the mean stellar population properties and the spin parameter proxy, $\lambda _{R_{\rm {e}}}$, drawn from the SAMI Galaxy Survey. We fit a global $[\alpha /\rm {Fe}]$–σ relation, fi…
View article: The LEGA-C and SAMI galaxy surveys: quiescent stellar populations and the mass–size plane across 6 Gyr
The LEGA-C and SAMI galaxy surveys: quiescent stellar populations and the mass–size plane across 6 Gyr Open
We investigate changes in stellar population age and metallicity ([Z/H]) scaling relations for quiescent galaxies from intermediate redshift (0.60 ≤ $z$ ≤ 0.76) using the LEGA-C Survey to low redshift (0.014 ≤ $z$ ≤ 0.10) using the SAMI Ga…
View article: The SAMI galaxy survey: Mass and environment as independent drivers of galaxy dynamics
The SAMI galaxy survey: Mass and environment as independent drivers of galaxy dynamics Open
The kinematic morphology–density relation of galaxies is normally attributed to a changing distribution of galaxy stellar masses with the local environment. However, earlier studies were largely focused on slow rotators; the dynamical prop…
View article: Linking the Galactic and Extragalactic -- A Virtual Meeting During a World-Wide Pandemic
Linking the Galactic and Extragalactic -- A Virtual Meeting During a World-Wide Pandemic Open
How do we bridge the gap between the Galactic and the extragalactic? By focusing on the topic of stellar dynamics and stellar populations of the Milky Way and its siblings this virtual meeting aimed at connecting both fields that each brin…
View article: The LEGA-C and SAMI Galaxy Surveys: Quiescent Stellar Populations and\n the Mass-Size Plane across 6 Gyr
The LEGA-C and SAMI Galaxy Surveys: Quiescent Stellar Populations and\n the Mass-Size Plane across 6 Gyr Open
We investigate the change in mean stellar population age and metallicity\n([Z/H]) scaling relations for quiescent galaxies from intermediate redshift\n($0.60\\leq z\\leq0.76$) using the LEGA-C Survey, to low redshift ($0.014\\leq\nz\\leq0.…
View article: The SAMI Galaxy Survey: Trends in [\alpha/Fe] as a Function of Morphology and Environment
The SAMI Galaxy Survey: Trends in [\alpha/Fe] as a Function of Morphology and Environment Open
We present a new set of index-based measurements of [$\\alpha$/Fe] for a\nsample of 2093 galaxies in the SAMI Galaxy Survey. Following earlier work, we\nfit a global relation between [$\\alpha$/Fe] and the galaxy velocity dispersion\n$\\si…
View article: The SAMI Galaxy Survey: a statistical approach to an optimal classification of stellar kinematics in galaxy surveys
The SAMI Galaxy Survey: a statistical approach to an optimal classification of stellar kinematics in galaxy surveys Open
Large galaxy samples from multiobject integral field spectroscopic (IFS) surveys now allow for a statistical analysis of the z ∼ 0 galaxy population using resolved kinematic measurements. However, the improvement in number statistics comes…
View article: The SAMI Galaxy Survey: the role of disc fading and progenitor bias in kinematic transitions
The SAMI Galaxy Survey: the role of disc fading and progenitor bias in kinematic transitions Open
We use comparisons between the Sydney-AAO Multi-object Integral Field Spectrograph (SAMI) Galaxy Survey and equilibrium galaxy models to infer the importance of disc fading in the transition of spirals into lenticular (S0) galaxies. The lo…
View article: The SAMI Galaxy Survey: stellar population and structural trends across the Fundamental Plane
The SAMI Galaxy Survey: stellar population and structural trends across the Fundamental Plane Open
We study the Fundamental Plane (FP) for a volume- and luminosity-limited sample of 560 early-type galaxies from the SAMI survey. Using r-band sizes and luminosities from new multi-Gaussian expansion photometric measurements, and treating l…
View article: The Colors of Bulges and Disks in the Core and Outskirts of Galaxy Clusters
The Colors of Bulges and Disks in the Core and Outskirts of Galaxy Clusters Open
The role of the environment on the formation of S0 galaxies is still not well understood, specifically in the outskirts of galaxy clusters. We study eight low-redshift clusters, analyzing galaxy members up to cluster-centric distances of ∼…
View article: A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence Open
Galaxy internal structure growth has long been accused of inhibiting star formation in disc galaxies. We investigate the potential physical connection between the growth of dispersion-supported stellar structures (e.g. classical bulges) an…
View article: The SAMI Galaxy Survey: Kinematics of Stars and Gas in Brightest Group Galaxies—The Role of Group Dynamics
The SAMI Galaxy Survey: Kinematics of Stars and Gas in Brightest Group Galaxies—The Role of Group Dynamics Open
We study the stellar and gas kinematics of the brightest group galaxies (BGGs) in dynamically relaxed and unrelaxed galaxy groups for a sample of 154 galaxies in the SAMI galaxy survey. We characterize the dynamical state of the groups usi…
View article: The SAMI Galaxy Survey: the third and final data release
The SAMI Galaxy Survey: the third and final data release Open
We have entered a new era where integral-field spectroscopic surveys of galaxies are sufficiently large to adequately sample large-scale structure over a cosmologically significant volume. This was the primary design goal of the SAMI Galax…
View article: The SAMI Galaxy Survey: reconciling strong emission line metallicity diagnostics using metallicity gradients
The SAMI Galaxy Survey: reconciling strong emission line metallicity diagnostics using metallicity gradients Open
We measure the gas-phase metallicity gradients of 248 galaxies selected from Data Release 2 of the SAMI Galaxy Survey. We demonstrate that there are large systematic discrepancies between the metallicity gradients derived using common stro…
View article: The SAMI Galaxy Survey: Bulge and Disk Stellar Population Properties in Cluster Galaxies
The SAMI Galaxy Survey: Bulge and Disk Stellar Population Properties in Cluster Galaxies Open
We explore stellar population properties separately in the bulge and the disk of double-component cluster galaxies, to shed light on the formation of lenticular galaxies in dense environments. We study eight low-redshift clusters from the …
View article: Bulge and disk colors in the cluster core and outskirts
Bulge and disk colors in the cluster core and outskirts Open
The role of the environment on the formation of S0 galaxies is still not well understood, specifically in the outskirts of galaxy clusters. We study eight low-redshift clusters, analyzing galaxy members up to cluster-centric distances $\si…
View article: The SAMI Galaxy Survey: Towards an Optimal Classification of Galaxy Stellar Kinematics
The SAMI Galaxy Survey: Towards an Optimal Classification of Galaxy Stellar Kinematics Open
Large galaxy samples from multi-object IFS surveys now allow for a statistical analysis of the z~0 galaxy population using resolved kinematics. However, the improvement in number statistics comes at a cost, with multi-object IFS surveys mo…