A Physical Model for z~2 Dust Obscured Galaxies (2009)
Narayanan, Desika, Dey, Arjun, Hayward, Christopher, Cox, Thomas J., Bussmann, R. Shane, Brodwin, Mark, ...
We present a physical model for the origin of z~2 Dust-Obscured Galaxies (DOGs), a class of high-redshift ULIRGs selected at 24 micron which are particularly optically faint (F24/FR>1000). By...
Accelerating Dust Temperature Calculations with Graphics Processing Units (2009)
Jonsson, Patrik, Primack, Joel
When calculating the infrared spectral energy distributions (SEDs) of galaxies in radiation-transfer models, the calculation of dust grain temperatures is generally the most time-consuming part of...
High-Resolution Panchromatic Spectral Models of Galaxies including Photoionisation and Dust (2009)
Jonsson, Patrik, Groves, Brent, Cox, T. J.
An updated version of the dust radiation transfer code Sunrise, including models for star-forming regions and a self-consistent calculation of the spatially dependent dust and PAH emission, is...
The Formation of High Redshift Submillimeter Galaxies (2009)
Narayanan, Desika, Hayward, Christopher C., Cox, Thomas J., Hernquist, Lars, Jonsson, Patrik, Younger, Joshua D., ...
We describe a model for the formation of \zsim 2 Submillimeter Galaxies (SMGs) which simultaneously accounts for both average and bright SMGs while providing a reasonable match to their mean observed...
Astronomical Software Wants To Be Free: A Manifesto (2009)
Weiner, Benjamin J., Blanton, Michael R., Coil, Alison L., Cooper, Michael C., Davé, Romeel, Hogg, David W., ...
Astronomical software is now a fact of daily life for all hands-on members of our community. Purpose-built software for data reduction and modeling tasks becomes ever more critical as we handle...
Lotz, Jennifer M., Jonsson, Patrik, Cox, T. J., Primack, Joel R.
A key obstacle to understanding the galaxy merger rate and its role in galaxy evolution is the difficulty in constraining the merger properties and time-scales from instantaneous snapshots of the...
The Formation of Polar Disk Galaxies (2008)
Brook, Chris B., Governato, Fabio, Quinn, Thomas, Wadsley, James, Brooks, Alyson M., Willman, Beth, ...
Polar Ring Galaxies, such as NGC4650A, are a class of galaxy which have two kinematically distinct components that are inclined by almost 90 degrees to each other. These striking galaxies challenge...
The effect of galaxy mass ratio on merger-driven starbursts (2008)
Cox, T. J., Jonsson, Patrik, Somerville, Rachel S., Primack, Joel R., Dekel, Avishai
We employ numerical simulations of galaxy mergers to explore the effect of galaxy mass ratio on merger-driven starbursts. Our numerical simulations include radiative cooling of gas, star formation,...
The effect of galaxy mass ratio on merger--driven starbursts (2007)
Cox, T. J., Jonsson, Patrik, Somerville, Rachel S., Primack, Joel R., Dekel, Avishai
We employ numerical simulations of galaxy mergers to explore the effect of galaxy mass ratio on merger--driven starbursts. Our numerical simulations include radiative cooling of gas, star formation,...
Dust Attenuation in Hydrodynamic Simulations of Spiral Galaxies (2007)
Rocha, Miguel, Jonsson, Patrik, Primack, Joel R., Cox, T. J.
We study the effects of dust in hydrodynamic simulations of spiral galaxies when different radial metallicity gradients are assumed. SUNRISE, a Monte-Carlo radiative-transfer code, is used to make...
HANSEN, LARS, JONSSON, PATRIK, JOHANSSON, RIKARD
Sammanfattning Uppsatsens titel: Cash Management, En studie av hur ett förbisett vinstgenererande område hanteras av medelstora företag Seminariedatum: 2006-06-08 Ämne/kurs: FEK582...
Shapes of Stellar Systems and Dark Halos from Simulations of Galaxy Major Mergers (2006)
Novak, Gregory S., Cox, Thomas J., Primack, Joel R., Jonsson, Patrik, Dekel, Avishai
Using a sample of 89 snapshots from 58 hydrodynamic binary galaxy major merger simulations, we find that stellar remnants are mostly oblate while dark matter halos are mostly prolate or triaxial. The...
Sunrise: Polychromatic Dust Radiative Transfer in Arbitrary Geometries (2006)
This paper describes Sunrise, a parallel, free Monte-Carlo code for the calculation of radiation transfer through astronomical dust. Sunrise uses an adaptive-mesh refinement grid to describe...
Simulations of dust in interacting galaxies. I. Dust attenuation (2006)
Jonsson, Patrik, Cox, T. J., Primack, Joel R., Somerville, Rachel S.
A new Monte Carlo radiative transfer code, SUNRISE, is used in conjunction with hydrodynamic simulations of major galaxy mergers to calculate the effects of dust in such systems. Dust has a profound...
Feedback in simulations of disc-galaxy major mergers (2006)
Cox, T. J., Jonsson, Patrik, Primack, Joel R., Somerville, Rachel S.
Using hydrodynamic simulations of disc-galaxy major mergers, we investigate the star formation history and remnant properties when various parametrizations of a simple stellar feedback model are...
Feedback in simulations of disc-galaxy major mergers (2005)
Cox, T. J., Jonsson, Patrik, Primack, Joel R., Somerville, Rachel S.
Using hydrodynamic simulations of disc-galaxy major mergers, we investigate the star formation history and remnant properties when various parametrizations of a simple stellar feedback model are...
Simulations of Dust in Interacting Galaxies I: Dust Attenuation (2005)
Jonsson, Patrik, Cox, T. J., Primack, Joel R., Somerville, Rachel S.
A new Monte-Carlo radiative-transfer code, Sunrise, is used in conjunction with hydrodynamic simulations of major galaxy mergers to calculate the effects of dust in such systems. The simulations are...
Simulations of Dust in Interacting Galaxies (2004)
Jonsson, Patrik, Cox, T. J., Primack, Joel R.
A new Monte-Carlo radiative-transfer code, Sunrise, is used to study the effects of dust in N-body/hydrodynamic simulations of interacting galaxies. Dust has a profound effect on the appearance of...
Generating Hot Gas in Simulations of Disk-Galaxy Major Mergers (2004)
Cox, T. J., Primack, Joel, Jonsson, Patrik, Somerville, Rachel
We report on the merger-induced generation of a shock-heated gas wind and formation of a remnant gas halo in simulations of colliding disk galaxies. The simulations use cosmologically motivated...
Simulations of dust in interacting galaxies / (2004)
Thesis (Ph.D.)--University of California, Santa Cruz, 2004.
The Impact of Maintenance on the Production Process - Achieving High Performance (1999)
The dissertation is about management of equipment maintenance in manufacturing firms. The overall research objective is to describe how maintenance interacts with manufacturing and explain how it...
Young galaxies: what turns them on? (1999)
Kolatt, Tsafrir S., Bullock, James S., Somerville, Rachel S., Sigad, Yair, Jonsson, Patrik, Kravtsov, Andrey V., ...
Lyman break galaxies (LBGs) at $z \sim 3$ exhibit number densities and clustering similar to local $L_*$ galaxies; however, their star formation rates (SFRs) are much higher. We explore the scenario...
JON AARUM ANDERSEN, PATRIK JONSSON
Managers often see new organizational design as the solution to many problems. This paper explores the relationship between organization structure (design), functioning of organizations, and...
Exploring problems related to the materials planning user environment
This paper explores the existence of various user-environment problems (i.e. problems related to the planning organization, basic planning data, software support, education, and knowledge) and...
Zhou, Honggeng, Keong Leong, G., Jonsson, Patrik, Sum, Chee-Chuong
This empirical study compares the advanced manufacturing technology (AMT) investment, the manufacturing infrastructure investment, and the interaction effect between these two types of investments...