A5003791479- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Spectroscopy and Laser Applications
- Phase Equilibria and Thermodynamics
- Cosmology and Gravitation Theories
- Scientific Measurement and Uncertainty Evaluation
The University of Western Australia
2022-2024
ARC Centre of Excellence for All-sky Astrophysics
2022-2024
ASTRO-3D
2022-2024
International Centre for Radio Astronomy Research
2022-2024
ABSTRACT Slow rotator galaxies are distinct amongst galaxy populations, with simulations suggesting that a mix of minor and major mergers responsible for their formation. A promising path to resolve outstanding questions on the type merger responsible, is by investigating deep imaging massive signs potential remnants. We utilize from Subaru-Hyper Suprime Cam Wide data search tidal features in [log10(M*/M⊙) > 10] early-type (ETGs) SAMI Galaxy Survey. perform visual check images where...
Misalignments between the rotation axis of stars and gas are an indication external processes shaping galaxies throughout their evolution. Using observations 3068 from SAMI Galaxy Survey, we compute global kinematic position angles for 1445 objects with reliable kinematics identify 169 (12%) which show stellar-gas misalignments. Kinematically decoupled features more prevalent in early-type/passive compared to late-type/star-forming systems. Star formation is main source ionisation only 22%...
ABSTRACT The activity of central supermassive black holes might affect the alignment galaxy spin axes with respect to closest cosmic filaments. We exploit Sydney–AAO Multi-object Integral-field Galaxy Survey study possible relations between hole and spin–filament alignments stars ionized gas separately. To explore impact instantaneous activity, active galaxies are selected according emission-line diagnostics. Central stellar velocity dispersion (σc) is used as a proxy for mass its integrated...
ABSTRACT The stellar mass Tully–Fisher relation (STFR) and its scatter encode valuable information about the processes shaping galaxy evolution across cosmic time. However, we are still missing a proper quantification of STFR slope dependence on baryonic tracer used to quantify rotational velocity, velocity measurement radius integrated properties. We present catalogue ionized gas (traced by H$\rm {\alpha }$ emission) kinematic measurements for sample galaxies drawn from MaNGA Galaxy Survey,...
ABSTRACT Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to formation of disc galaxies with similar properties (MW). In this study, we explore different selection techniques for identifying MWAs in Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI) Galaxy Survey. We utilize a nearest neighbours method define using four parameters including stellar mass ($M_{\star }$), star rate ($\rm SFR$),...
ABSTRACT We use the SAMI Galaxy Survey to examine drivers of galaxy spin, $\lambda _{R_{\rm e}}$, in a multidimensional parameter space including stellar mass, population age (or specific star formation rate), and various environmental metrics (local density, halo satellite versus central). Using partial correlation analysis, we consistently find that or rate is primary correlating with spin. Light-weighted are more strongly correlated spin than mass-weighted age. In fact, across our sample,...
We investigate the influence of star formation and instantaneous AGN feedback processes on ionized gas velocity dispersion in a sample 1285 emission-line galaxies with stellar masses $\log\,(M_*/M_{\odot}) \geq 9$ from integral-field spectroscopy SAMI Galaxy Survey. fit both narrow broad emission line components using aperture spectra integrated within one effective radius, while ensuring elimination differences between individual spaxels. Our analysis reveals that 386 (30%) can be...
ABSTRACT We investigate the influence of star formation and instantaneous active galactic nuclei (AGN) feedback processes on ionized gas velocity dispersion in a sample 1285 emission-line galaxies with stellar masses $\log \, (M_*/\mathrm{ M}_{\odot }) \ge 9$ from integral-field spectroscopy Sydney-AAO Multi-object Integral-field Galaxy Survey. fit both narrow- broad-emission-line components using aperture spectra integrated within one effective radius, while ensuring elimination differences...
The circular velocity function (CVF) of galaxies is a fundamental test the $\Lambda$ Cold Dark Matter (CDM) paradigm as it traces variation galaxy number densities with ($v_{\rm{circ}}$), proxy for dynamical mass. Previous observational studies CVF have either been based on \ion{H}{I}-rich galaxies, or encompassed low-number statistics and probed narrow ranges in $v_{\rm{circ}}$. We present benchmark computation between $100-350\ \rm{km\ s^{-1}}$ using sample 3527 nearby-Universe...
Abstract Simulations suggest that slow rotating galaxies are the result of galaxy-galaxy mergers have a tendency to randomise stellar orbits. The exact pathway for rotator formation, however, is still unclear. Our aim see whether there relationship between fossil groups - whose central thought undergone more major merging than other – and kinematic properties those galaxies. We classify all galaxy in GAMA redshift survey were observed with SAMI as: (i) groups, (ii) mass gap (fossil-like...
Milky Way Analogues (MWAs) provide an alternative insight into the various pathways that lead to formation of disk galaxies with similar properties Way. In this study, we explore different selection techniques for identifying MWAs in SAMI Galaxy Survey. We utilise a nearest neighbours method define using four parameters including stellar mass ($M_{\star}$), star rate ($SFR$), bulge-to-total ratio ($B/T$) and effective radius ($R_{\rm{e}}$). Based on 15 combinations, find $M_{\star}$ SFR is...
ABSTRACT Galactic fountains driven by star formation result in a variety of kinematic structures such as ionized winds and thick gas discs, both which manifest complex emission-line profiles that can be parametrized multiple Gaussian components. We use integral field spectroscopy from the SAMI Galaxy Survey to spectrally resolve these features, traced broad ${\rm H}\alpha$ components, distinguish them star-forming (SF) thin disc, narrow 3068 galaxies local Universe. Using matched sample...
The activity of central supermassive black holes might affect the alignment galaxy spin axes with respect to closest cosmic filaments. We exploit SAMI Galaxy Survey study possible relations between hole and spin-filament alignments stars ionised gas separately. To explore impact instantaneous activity, active galaxies are selected according emission-line diagnostics. Central stellar velocity dispersion ($\sigma_c$) is used as a proxy for mass its integrated activity. find evidence be...
The stellar mass Tully-Fisher relation (STFR) and its scatter encode valuable information about the processes shaping galaxy evolution across cosmic time. However, we are still missing a proper quantification of STFR slope dependence on baryonic tracer used to quantify rotational velocity, velocity measurement radius integrated properties. We present catalogue ionised gas (traced by H$\alpha$ emission) kinematic measurements for sample galaxies drawn from MaNGA Galaxy Survey, providing an...
Galactic fountains driven by star formation result in a variety of kinematic structures such as ionised winds and thick gas disks, both which manifest complex emission line profiles that can be parametrised multiple Gaussian components. We use integral field spectroscopy (IFS) from the SAMI Galaxy Survey to spectrally resolve these features, traced broad H$\alpha$ components, distinguish them star-forming thin disk, narrow 3068 galaxies local Universe. Using matched sample analysis...