2.4k citations · 44.2k across the 466 of their papers we have counts for
19 papers · 1 filter
The Sydney-AAO Multi-object Integral field spectrograph (SAMI)
Scott M. Croom, Jon S. Lawrence, Joss Bland-Hawthorn +22
We demonstrate a novel technology that combines the power of the multi-object spectrograph with the spatial multiplex advantage of an integral field spectrograph (IFS). The Sydney-…
Principal Component Analysis on Chemical Abundances Spaces
Yuan-Sen Ting, Kenneth C. Freeman, Chiaki Kobayashi +2
In preparation for the HERMES chemical tagging survey of about a million Galactic FGK stars, we estimate the number of independent dimensions of the space defined by the stellar ch…
Metal-Poor Lithium-Rich Giants in the Radial Velocity Experiment Survey
Gregory R. Ruchti, Jon P. Fulbright, Rosemary F. G. Wyse +17
We report the discovery of eight lithium-rich field giants found in a high resolution spectroscopic sample of over 700 metal-poor stars ([Fe/H]<-0.5) selected from the RAVE survey.…
Galaxy And Mass Assembly (GAMA): Structural Investigation of Galaxies via Model Analysis (SIGMA)
Lee S. Kelvin, Simon P. Driver, Aaron S. G. Robotham +17
We present single-Sérsic two-dimensional model fits to 167,600 galaxies modelled independently in the ugrizYJHK bandpasses using reprocessed Sloan Digital Sky Survey Data Release S…
A complex multi-notch astronomical filter to suppress the bright infrared sky
J. Bland-Hawthorn, S. C. Ellis, S. G. Leon-Saval +10
A long-standing and profound problem in astronomy is the difficulty in obtaining deep near-infrared observations due to the extreme brightness and variability of the night sky at t…
Accretion of the Magellanic system onto the Galaxy
Matthew Nichols, James Colless, Matthew Colless +1
Our Galaxy is surrounded by a large family of dwarf galaxies of which the most massive are the Large and Small Magellanic Clouds (LMC and SMC). Recent evidence suggests that system…
Episodic starbursts in dwarf spheroidal galaxies: a simple model
Matthew Nichols, Doug Lin, Joss Bland-Hawthorn
Dwarf galaxies in the Local Group appear to be stripped of their gas within 270 kpc of the host galaxy. Color-magnitude diagrams of these dwarfs, however, show clear evidence of ep…
Galaxy And Mass Assembly: Stellar Mass Estimates
Edward N Taylor, Andrew M Hopkins, Ivan K Baldry +32
This paper describes the first catalogue of photometrically-derived stellar mass estimates for intermediate-redshift (z < 0.65) galaxies in the Galaxy And Mass Assembly (GAMA) spec…
Distance determination for RAVE stars using stellar models III: The nature of the RAVE survey and Milky Way chemistry
B. Burnett, J. Binney, S. Sharma +19
We apply the method of Burnett & Binney (2010) for the determination of stellar distances and parameters to the internal catalogue of the Radial Velocity Experiment (Steinmetz et a…
Discovery of a high-z protocluster with tunable filters: the case of 6C0140+326 at z=4.4
E. Kuiper, N. A. Hatch, B. P. Venemans +7
We present the first results obtained using a tunable narrowband filter in the search for high-z protoclusters. Using the recently commissioned red tunable filter on the Gran Teles…
Observational Properties of the Metal-Poor Thick Disk of the Milky Way Galaxy and Insights into Its Origins
Gregory R. Ruchti, Jon P. Fulbright, Rosemary F. G. Wyse +17
We have undertaken the study of the elemental abundances and kinematic properties of a metal-poor sample of candidate thick-disk stars selected from the RAVE spectroscopic survey o…
Clustering of Ly-alpha emitters around luminous quasars at z = 2-3: an alternative probe of reionization on galaxy formation
Loren R. Bruns, J. Stuart B. Wyithe, Joss Bland-Hawthorn +1
Narrowband observations have detected no Ly-alpha emission within a 70 pMpc^3 volume centered on the z = 2.168 quasar PKS 0424-131. This is in contrast to surveys of Ly-alpha emitt…
Single-lined Spectroscopic Binary Star Candidates in the RAVE Survey
G. Matijevic, T. Zwitter, O. Bienayme +16
Repeated spectroscopic observations of stars in the Radial Velocity Experiment (RAVE) database are used to identify and examine single-lined binary (SB1) candidates. The RAVE lates…
Galaxy And Mass Assembly (GAMA): The star formation rate dependence of the stellar initial mass function
M. L. P. Gunawardhana, A. M. Hopkins, R. G. Sharp +35
The stellar initial mass function (IMF) describes the distribution in stellar masses produced from a burst of star formation. For more than fifty years, the implicit assumption und…
GAMA/H-ATLAS: The ultraviolet spectral slope and obscuration in galaxies
Dinuka B. Wijesinghe, Elisabete. da Cunha, Andrew. M. Hopkins +59
We use multiwavelength data from the Galaxy And Mass Assembly (GAMA) and Herschel ATLAS (H-ATLAS) surveys to compare the relationship between various dust obscuration measures in g…
Age patterns in a sample of nearby spiral galaxies
M. Carmen Sánchez-Gil, D. Heath Jones, Enrique Pérez +3
We present the burst ages for young stellar populations in a sample of six nearby (< 10 Mpc) spiral galaxies using a differential pixel-based analysis of the ionized gas emission.…
Gas depletion in Local Group dwarfs on ~250 kpc scales: Ram pressure stripping assisted by internal heating at early times
Matthew Nichols, Joss Bland-Hawthorn
A recent survey of the Galaxy and M31 reveals that more than 90% of dwarf galaxies within 270 kpc of their host galaxy are deficient in HI gas. At such an extreme radius, the coron…
Galaxia: a code to generate a synthetic survey of the Milky Way
Sanjib Sharma, Joss Bland-Hawthorn, Kathryn V. Johnston +1
We present here a fast code for creating a synthetic survey of the Milky Way. Given one or more color-magnitude bounds, a survey size and geometry, the code returns a catalog of st…
Pre-galactic metal enrichment - The chemical signatures of the first stars
Torgny Karlsson, Volker Bromm, Joss Bland-Hawthorn
The emergence of the first sources of light at redshifts of z ~ 10-30 signaled the transition from the simple initial state of the Universe to one of increasing complexity. We revi…