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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…
An Absence of Hot Jupiter Planets in 47 Tucanae: Results of a Wide-Field Transit Search
David T. F Weldrake, Penny D Sackett, Kenneth C Freeman +1
We present the results of a comprehensive wide field search for transiting ``Hot Jupiter'' planets (1d<P<16d) in the globular cluster 47 Tucanae. Motivated by the core null result…
Probing Halos of Galaxies at Very Large Radii using Background QSOs
Stephanie Cote, Rosemary Wyse, Claude Carignan +2
(ABRIDGED) Gaseous halos of nine nearby galaxies (with redshifts cz < 6000 km/s) were probed at large galactocentric radii using background quasars observed with HST GHRS and STIS.…
The cosmological significance of Low Surface Brightness galaxies found in a deep blind neutral-hydrogen survey
R. F. Minchin, M. J. Disney, Q. A. Parker +16
We have placed limits on the cosmological significance of gas-rich low surface-brightness (LSB) galaxies as a proportion of the total population of gas-rich galaxies by carrying ou…
Scaling Laws for Dark Matter Halos in Late-Type and Dwarf Spheroidal Galaxies
John Kormendy, K. C. Freeman
Maximum disk mass models fitted to galaxy rotation curves are used to show that dark matter (DM) halos in late-type and dwarf spheroidal (dSph) galaxies satisfy well defined scalin…
A Comprehensive Catalogue of Variable Stars in the field of 47 Tucanae
David T F Weldrake, Penny D Sackett, Terry J Bridges +1
We present the results of a comprehensive search for stellar variability in the globular cluster 47 Tucanae. Using the Mount Stromlo 40-inch (1m) telescope at Siding Spring Observa…