Norman Murray

A Maximum Stellar Surface Density in Dense Stellar Systems (2009)

Hopkins, Philip F., Murray, Norman, Quataert, Eliot, Thompson, Todd A.

We compile observations of the surface mass density profiles of dense stellar systems, including globular clusters in the Milky Way and nearby galaxies, massive star clusters in nearby starbursts,...

The Disruption of Giant Molecular Clouds by Radiation Pressure and the Efficiency of Star Formation in Galaxies (2009)

Murray, Norman, Quataert, Eliot, Thompson, Todd A.

Star formation is slow, in the sense that the gas consumption time is much longer than the dynamical time. It is also inefficient; essentially all star formation in local galaxies takes place in...

The Small Scatter in BH-Host Correlations & The Case for Self-Regulated BH Growth (2009)

Hopkins, Philip F., Murray, Norman, Thompson, Todd

Supermassive black holes (BHs) obey tight scaling relations between their mass and their host galaxy properties such as total stellar mass, velocity dispersion, and potential well depth. This has led...

Compact High-Redshift Galaxies Are the Cores of the Most Massive Present-Day Spheroids (2009)

Hopkins, Philip F., Bundy, Kevin, Murray, Norman, Quataert, Eliot, Lauer, Tod, Ma, Chung-Pei

Observations suggest that effective radii of high-z massive spheroids are as much as a factor ~6 smaller than low-z galaxies of comparable mass. Given the apparent absence of low-z counterparts, this...

Radio Emission from Supernova Remnants: Implications for Post-Shock Magnetic Field Amplification and the Magnetic Fields of Galaxies (2009)

Thompson, Todd A., Quataert, Eliot, Murray, Norman

Using observations from the literature, we show that the non-thermal radio luminosity (L) of supernova remnants (SNRs) is a strong function of the average gas surface density (Sigma) of the galaxy in...

Atmospheric Escape from Hot Jupiters (2008)

Murray-Clay, Ruth, Chiang, Eugene, Murray, Norman

Photoionization heating from UV radiation incident on the atmospheres of hot Jupiters may drive planetary mass loss. We construct a model of escape that includes realistic heating and cooling,...

School of Construction and Property Management, Bridgewater Building, (2007)

Norman Murray, Terrence Fernando, Ghassan Aouad

Abstract: The construction industry has acknowledged that its current working practices are in need of substantial improvements in quality and efficiency and has identified that computer modeling...

Oxygen from the Lambda 7774 High-Excitation Triplet in Open Cluster Dwarfs: Hyades (2005)

Schuler, Simon C., King, Jeremy R., Terndrup, Donald M., Pinsonneault, Marc H., Murray, Norman, Hobbs, L. M.

Oxygen abundances have been derived from the near-IR, high-excitation Lambda 7774 O I triplet in high-resolution, high signal-to-noise spectra of 45 Hyades dwarfs using standard one dimensional,...

A ON THE MAXIMUM LUMINOSITY OF GALAXIES AND THEIR CENTRAL BLACK HOLES: FEEDBACK FROM MOMENTUM-DRIVEN WINDS (2004)

Norman Murray, Eliot Quataert, Todd A. Thompson

We investigate large-scale galactic winds driven by momentum deposition. Momentum injection is provided by (1) radiation pressure produced by the continuum absorption and scattering of photons on...

A constraint manager to support virtual maintainability (2003)

Luis Marcelino, Norman Murray, Terrence Fernando, Salford U. K

Virtual prototyping tools have already captivated the industry's interest as a viable design tool. One of the key challenges for the research community is to extend the capabilities of Virtual...

A framework for describing visual interfaces to databases (1998)

Norman Murray, Carole Goble, Norman W. Paton

In the field of HCI there exist many formalisms for analysing, describing and evaluating interactive systems. However, in developing and evaluating user interfaces to databases, we found it necessary...

Kaleidoquery: A Visual Query Language for Object Databases (1998)

Norman Murray, Norman Paton, Carole Goble

In this paper we describe Kaleidoquery, a visual query language for object databases with the same expressive power as OQL. We will describe the design philosophy behind the filter flow nature of...

A Framework for Describing Visual Interfaces to Databases (1998)

Norman Murray, Carole Goble, Norman W. Paton

In the field of HCI there exist many formalisms for analysing, describing and evaluating interactive systems. However, in developing and evaluating user interfaces to databases, we found it necessary...

Kaleidoscape: A 3D Environment for Querying ODMG Compliant Databases (1998)

Norman Murray, Carole Goble, Norman Paton

Kaleidoscape is a three dimensional (3D) implementation of a data-flow oriented visual query language, which has been implemented in 3D to examine the advantages and disadvantages of such an...