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The Pisces-Cetus Supercluster: a remarkable filament of galaxies in the 2dF Galaxy Redshift Survey and Sloan Digital Sky surveys
Scott C. Porter, Somak Raychaudhury
The Pisces-Cetus supercluster (redshift z~0.06) is one of the richest nearby (z<0.1) superclusters of galaxies, and emerges as a remarkable filament of galaxies at the edges of the…
X-ray observations of the edge-on star-forming galaxy NGC891 and its supernova SN1986J
Rowan Temple, Somak Raychaudhury, Ian Stevens
We present XMM-Newton observations of NCG891, a nearby edge-on spiral galaxy. We analyse the extent of the diffuse emission emitted from the disk of the galaxy, and find that it ha…
A Chandra Observation of the Nearby Lenticular Galaxy NGC 5102: Where are the X-ray Binaries?
R. P. Kraft, L. A. Nolan, T. J. Ponman +2
We present results from a 34 ks Chandra/ACIS-S observation of the nearby (d=3.1 Mpc) lenticular galaxy NGC 5102, previously shown to have an unusually low X-ray luminosity. We dete…
Mapping the Physical Properties of Cosmic Hot Gas with Hyper-spectral Imaging
Mark O'Dwyer, Trevor Ponman, Ela Claridge +1
A novel inversion technique is proposed to compute parametric maps showing the temperature, density and chemical composition of cosmic hot gas from X-ray hyper-spectral images. The…
Finding Young Stellar Populations in Elliptical Galaxies from Independent Components of Optical Spectra
Ata Kaban, Louisa A. Nolan, Somak Raychaudhury
Elliptical galaxies are believed to consist of a single population of old stars formed together at an early epoch in the Universe, yet recent analyses of galaxy spectra seem to ind…