Mathematics – Logic
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.4711f&link_type=abstract
American Astronomical Society Meeting 203, #47.11; Bulletin of the American Astronomical Society, Vol. 35, p.1282
Mathematics
Logic
Scientific paper
The Horologium-Reticulum Supercluster (HRS) covers an area of more than 12 x 12 degrees on the sky centered at approximately α = 3h18m43s, δ = -50°01\arcmin40\arcsec. It is second only to the Shapley supercluster in terms of mass concentration in the local 300 Mpc. We have now obtained ˜1450 unpublished redshifts via multi-fiber spectroscopy in this area covering both global and localized regions. On a global scale, approximately 550 spectra of galaxies have been obtained using the six-degree field (6dF) instrument on the UK Schmidt Telescope at the Anglo Australian Observatory (25% coverage down to 17.5 BJ). Spectroscopic studies in the localized regions of the HRS were completed with the fibre optic coupled aperture plate system (FOCAP with 40\arcmin FOV) on the Anglo-Australian Telescope (90% coverage down to 19.0 BJ). This increase of information doubles the amount of coverage compared to previous redshift data and provides a complementary picture of the area. With ˜3000 redshifts in this region, we are understanding the role of the supercluster environment in structure formation and evolution. Specifically, we are probing the dynamical and morphological characteristics of the HRS complex, comparing these with other known supercluster data for similarities, as well as evaluating the hierarchical merging scenario of structure formation as found in CDM N-body simulations.
Fleenor Matthew C.
Rose James A.
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