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A Wide-Field Survey of the Fornax Dwarf Spheroidal Galaxy
M. G. Coleman, G. S. Da Costa, J. Bland-Hawthorn +1
The results of a photometric survey of the Fornax dwarf spheroidal galaxy are presented herein. Accurate photometry in two colours (V and I) was collected over a 10 square degree a…
Kinematics of the Ionized Halo of NGC 5775
G. H. Heald, R. J. Rand, R. A. Benjamin +2
Studies of the kinematics of gaseous halos in some spiral galaxies have shown that the rotational velocity of the gas decreases with height above the midplane (z). This vertical ve…
DAzLE: The Dark Ages z (redshift) Lyman-alpha Explorer
Anthony Horton, Ian Parry, Joss Bland-Hawthorn +4
DAzLE is an near infrared narrowband differential imager being built by the Institute of Astronomy, Cambridge, in collaboration with the Anglo-Australian observatory. It is a speci…
The 2dF Galaxy Redshift Survey: the local E+A galaxy population
Chris Blake, Michael Pracy, Warrick Couch +27
We select a sample of low-redshift (z ~ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorptio…
Cosmic Star Formation History to z=1 from a Narrow Emission Line Selected Tunable Filter Survey
Karl Glazebrook, Jeffrey Tober, Scott Thomson +2
We report the results of a deep 3D imaging survey of the Hubble Deep Field North using the Taurus Tunable Filter and the William Herschel Telescope. This survey was designed to sea…
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type
Darren J. Croton, Glennys R. Farrar, Peder Norberg +26
We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radi…
Globular Cluster and Galaxy Formation: M31, the Milky Way and Implications for Globular Cluster Systems of Spiral Galaxies
D. Burstein, Y. Li, K. C. Freeman +10
The globular cluster (GC) systems of the Milky Way and of our neighboring spiral galaxy, M31, comprise 2 distinct entities, differing in 3 respects. 1. M31 has young GCs, ages from…
The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue
Will J. Percival, Daniel Burkey, Alan Heavens +26
We present the result of a decomposition of the 2dFGRS galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies are expect…
The Mysterious Absence of Neutral Hydrogen within One Mpc of a Luminous Quasar at Redshift 2.168
Paul J. Francis, Joss Bland-Hawthorn
The intense UV radiation from a highly luminous QSO should excite fluorescent Ly-alpha emission from any nearby neutral hydrogen clouds. We present a very deep narrow-band search f…
Substructure Analysis of Selected Low Richness 2dFGRS Clusters of Galaxies
William S. Burgett, Michael M. Vick, David S. Davis +30
Complementary one-, two-, and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy R…
The nature of the relative bias between galaxies of different spectral type in 2dFGRS
E. Conway, S. Maddox, V. Wild +29
We present an analysis of the relative bias between early- and late-type galaxies in the Two-degree Field Galaxy Redshift Survey (2dFGRS). Our analysis examines the joint counts in…
In Search of the Dark Ages -- An Experimental Challenge
J. Bland-Hawthorn, P. E. J. Nulsen
Most direct source detections beyond z~7 are likely to arise from wide-field narrowband surveys of Ly-a emission in the J band. For this to be true, the Ly-a emission must somehow…
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations
Vivienne Wild, John A. Peacock, Ofer Lahav +26
It is well known that the clustering of galaxies depends on galaxy type.Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is…
Galaxy Genesis -- unravelling the epoch of dissipation in the early disk
J. Bland-Hawthorn, K. Freeman
So how did the Galactic disk form and can the sequence of events ever be unravelled from the vast stellar inventory? This will require that some of the residual inhomogeneities fro…
The 2dF Galaxy Redshift Survey: The blue galaxy fraction and implications for the Butcher-Oemler effect
Roberto De Propris, Matthew Colless, John Peacock +28
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the…
Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue
V. R. Eke, C. M. Baugh, S. Cole +25
The construction of a catalogue of galaxy groups from the 2-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percol…