A photodissociation model for the morphology of the HI near OB associations in M33 (2009)
Heiner, J. S., Allen, R. J., Van Der Kruit, P. C.
We present an approach for analysing the morphology and physical properties of Hi features near giant OB asso- ciations in M33, in the context of a model whereby the Hi excess arises from...
Hakobyan, A. A., Petrosian, A. R., Mamon, G. A., McLean, B., Kunth, D., Turatto, M., ...
The determination of the supernova (SN) rate is based not only on the number of detected events, but also on the properties of the parent galaxy population. This is the first paper of a series aimed...
Co-promotor: Dr. P. R. ten Wolde (2008)
Marco Morelli, Academisch Proefschrift, Marco Morelli, Promotor Prof, Dr. D. Frenkel, Wiskunde En Informatica, ...
ter verkrijging van de graad van doctor aan de Universiteit van Amsterdam op gezag van de Rector Magnificus prof. dr. D. C. van den Boom ten overstaan van een door het college voor promoties...
Early-type galaxies with core collapse supernovae (2008)
Hakobyan, A. A., Petrosian, A. R., McLean, B., Kunth, D., Allen, R. J., Turatto, M., ...
It is widely accepted that the progenitors of core collapse SNe are young massive stars and therefore their host galaxies are mostly spiral or irregular galaxies dominated by a young stellar...
http://www.alacron.com/Products/boards/PB FastVision.htm, 2001. (2008)
R. J. Allen, O. B. Brown, H. R. Gordon
[4] J. D. Biegel, “Histogram specification techniques for enhancement of high altitude
The Vertical Dust Structure in Spiral Disks (2008)
Holwerda, B. W., Kamphuis, P., Allen, R. J., Peletier, R. F., Van Der Kruit, P. C.
The halo of NGC 891 has been the subject of studies for more than a decade. One of its most striking features is the large asymmetry in H-$\alpha$ emission. We have taken a quantitative look at this...
Structure and Evolution of the Opacity of Spiral Disks (2008)
Holwerda, B. W., Gonzalez, R. A., Keel, W. C., Calzetti, D., Allen, R. J., Van De Kruit, P. C.
The opacity of a spiral disk due to dust absorption influences every measurement we make of it in the UV and optical. Two separate techniques directly measure the total absorption by dust in the...
Reaction coordinates for the flipping of genetic switches (2007)
Morelli, M. J., Tanase-Nicola, S., Allen, R. J., Wolde, P. R. Ten
We present a detailed analysis, based on the Forward Flux Sampling (FFS) simulation method, of the switching dynamics and stability of two models of genetic toggle switches, consisting of two...
Morelli, M. J., Allen, R. J., Tanase-Nicola, S., Wolde, P. R. Ten
In many stochastic simulations of biochemical reaction networks, it is desirable to ``coarse-grain'' the reaction set, removing fast reactions while retaining the correct system dynamics. Various...
What is an Astronomical Data Model? (2007)
R. A. Shaw, H. E. Payne, A. Farris, R. J. Allen
Abstract. Using techniques from semantic data modeling and objectoriented data modeling, an astronomical data model is identified as a kind of conceptual analysis. The general characteristics of such...
Structure and Evolution of the Opacity of Spiral Disks (2007)
Holwerda, B. W., González, R. A., Keel, W. C., Calzetti, D., Allen, R. J., Van De Kruit, P. C.
The opacity of a spiral disk due to dust absorption influences every measurement we make of it in the UV and optical. Two separate techniques directly measure the total absorption by dust in the...
Valeriani, C., Allen, R.J., Morelli, M.J., Frenkel, D., Wolde, P.R. Ten
We present a method for computing stationary distributions for activated processes in equilibrium and nonequilibrium systems using forward flux sampling. In this method, the stationary distributions...
NGC922 - A new drop-through ring galaxy (2006)
Wong, O. I., Meurer, G. R., Bekki, K., Hanish, D. J., Kennicutt, R. C., Bland-Hawthorn, J., ...
We have found the peculiar galaxy NGC922 to be a new drop-through ring galaxy using multi-wavelength (UV-radio) imaging and spectroscopic observations. Its `C'-shaped morphology and tidal plume...
Simulating rare events in equilibrium or nonequilibrium stochastic systems (2006)
Allen, R.J., Frenkel, D., Wolde, P.R. Ten
We present three algorithms for calculating rate constants and sampling transition paths for rare events in simulations with stochastic dynamics. The methods do not require a priori knowledge of the...
Forward flux sampling-type schemes for simulating rare events: Efficiency analysis (2006)
Allen, R.J., Frenkel, D., Wolde, P.R. Ten
We analyze the efficiency of several simulation methods which we have recently proposed for calculating rate constants for rare events in stochastic dynamical systems in or out of equilibrium. We...
NGC922 - a new drop-through ring galaxy (2006)
Wong, O. I., Meurer, G. R., Bekki, K., Hanish, D. J., Kennicutt Jr, R. C., Bland-Hawthorn, J., ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
NGC922 - a new drop-through ring galaxy (2006)
Wong, O. I., Meurer, G. R., Bekki, K., Hanish, D. J., Kennicutt Jr, R. C., Bland-Hawthorn, J., ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
Is the binding of visual features in working memory resource-demanding? (2006)
Allen, R.J., Baddeley, A.D., Hitch, G.J.
The episodic buffer component of working memory is assumed to play a role in the binding of features into chunks. A series of experiments compared memory for arrays of colors or shapes with memory...
Calleja, M., Bruin, R., Tucker, M.G., Dover, .M.T., Tyer, R., Blanshard, L., ...
This paper describes a prototype grid infrastructure, called the “eMinerals minigrid”, for molecular simulation scientists. which is based on an integration of shared compute and data resources....
Allen, R. J., González, R. A., Holwerda, B. W.
Dust extinction can be determined from the number of distant field galaxies seen through a spiral disk. To calibrate this number for the crowding and confusion introduced by the foreground image,...
The Opacity of Spiral Galaxy Disks III: Automating the "Synthetic Field Method" (2004)
Allen, R. J., González, R. A., Holwerda, B. W.
Abstract: The dust extinction in spiral disks can be estimated from the counts of background field galaxies, provided the deleterious effects of confusion introduced by structure in the image of the...
Commisso, R.J., Allen, R.J., Boller, J.R., Cooperstein, G., Fisher, R.C., Hinshelwood, D.D., ...
Giesselmann, M. [Hrsg.]
Electrical modeling of mercury for optimal machine design and performance estimation. (2004)
Allen, R.J., Ottinger, P.F., Commisso, R.J., Schumer, J.W., Holt, T.A., Hoppe, P., ...
Giesselmann, M. [Hrsg.]
The Opacity of Spiral Galaxies from Counts of Distant Background Galaxies (2003)
Allen, R. J., González, R. A., Holwerda, B. W.
Abstract: We have applied the "Synthetic Field Method" on a sample of ~20 nearby galaxies in order to determine the opacity of their disks. We present preliminary results on the radial dependence of...
Automating the Synthetic Field Method : Application to Sextans A (2002)
Holwerda, B W; Allen, R J; Van der Kruit, P C; ( Kapteyn Institute Groningen ) ( Space Telescope Science Institute, ) 29 Jan 2002 . - 4 p Abstract: We have automated the ``Synthetic Field Method''...
The ALFA medium explorer mission (2000)
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...
The Kholo stage of the Ipswich coal measures. (1955)
Thesis (B. Sc.(Hons))--University of Queensland.
The ALFA medium explorer mission
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...
The ALFA medium explorer mission
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...