Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Couchman H"'
We present TREVR (Tree-based REVerse Ray Tracing), a general algorithm for computing the radiation field, including absorption, in astrophysical simulations. TREVR is designed to handle large numbers of sources and absorbers; it is based on a tree da
Externí odkaz:
http://arxiv.org/abs/1902.08083
We present a new method to study the characteristic scales of collapse and fragmentation in galactic disks. Clump formation is seeded in simulations via controlled perturbations with a specified wavelength and velocity. These are applied to otherwise
Externí odkaz:
http://arxiv.org/abs/1808.02438
We have explored the outskirts of dark matter haloes out to 2.5 times the virial radius using a large sample of halos drawn from Illustris, along with a set of zoom simulations (MUGS). Using these, we make a systematic exploration of the shape profil
Externí odkaz:
http://arxiv.org/abs/1708.06181
We explore the regulation of star formation in star-forming galaxies through a suite of high-resolution isolated galaxy simulations. We use the SPH code GASOLINE, including photoelectric heating and metal cooling, which produces a multi-phase interst
Externí odkaz:
http://arxiv.org/abs/1607.05795
We explore when supernovae can (and cannot) regulate the star formation and bulge growth in galaxies based on a sample of 18 simulated galaxies. The simulations include key physics such as evaporation and conduction, neglected in prior work, and requ
Externí odkaz:
http://arxiv.org/abs/1604.08244
Autor:
Snaith, O. N., Bailin, J., Gibson, B. K., Bell, E. F., Stinson, G., Valluri, M., Wadsley, J., Couchman, H.
We explore the chemical distribution of stars in a simulated galaxy. Using simulations of the same initial conditions but with two different feedback schemes (MUGS and MaGICC), we examine the features of the age-metallicity relation (AMR), and the th
Externí odkaz:
http://arxiv.org/abs/1512.02680
We explore the effect of galactic environment on properties of molecular clouds. Using clouds formed in a large-scale galactic disc simulation, we measure the observable properties from synthetic column density maps. We confirm that a significant fra
Externí odkaz:
http://arxiv.org/abs/1510.08187
Cosmological Galaxy Evolution with Superbubble Feedback I: Realistic Galaxies with Moderate Feedback
Publikováno v:
Monthly Notices of the Royal Astronomical Society 2015 453 (4): 3499-3509
We present the first cosmological galaxy evolved using the modern smoothed particle hydrodynamics (SPH) code GASOLINE2 with superbubble feedback. We show that superbubble-driven galactic outflows powered by Type II supernovae alone can produce $\rm{L
Externí odkaz:
http://arxiv.org/abs/1505.06268
We present a new analytic estimate for the energy required to create a constant density core within a dark matter halo. Our new estimate, based on more realistic assumptions, leads to a required energy that is orders of magnitude lower than is claime
Externí odkaz:
http://arxiv.org/abs/1505.00825
Publikováno v:
2014MNRAS.442.3013K
We present a new stellar feedback model that reproduces superbubbles. Superbubbles from clustered young stars evolve quite differently to individual supernovae and are substantially more efficient at generating gas motions. The essential new componen
Externí odkaz:
http://arxiv.org/abs/1405.2625