Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Geil, Paul M."'
Autor:
Qin, Yuxiang, Duffy, Alan R., Mutch, Simon J., Poole, Gregory B., Geil, Paul M., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2018, Volume 477, Issue 1, p.1318-1335
We study dwarf galaxy formation at high redshift ($z\ge5$) using a suite of high- resolution, cosmological hydrodynamic simulations and a semi-analytic model (SAM). We focus on gas accretion, cooling and star formation in this work by isolating the r
Externí odkaz:
http://arxiv.org/abs/1802.03879
Autor:
Duffy, Alan R., Mutch, Simon J., Poole, Gregory B., Geil, Paul M., Kim, Han-Seek, Mesinger, Andrei, Wyithe, J. Stuart B.
Using a series of high-resolution hydrodynamical simulations we show that during the rapid growth of high-redshift (z > 5) galaxies, reserves of molecular gas are consumed over a time-scale of 300Myr, almost independent of feedback scheme. We find th
Externí odkaz:
http://arxiv.org/abs/1705.07255
Autor:
Geil, Paul M., Mutch, Simon J., Poole, Gregory B., Duffy, Alan R., Mesinger, Andrei, Wyithe, J. Stuart B.
Direct detection of regions of ionized hydrogen (HII) has been suggested as a promising probe of cosmic reionization. Observing the redshifted 21-cm signal of hydrogen from the epoch of reionization (EoR) is a key scientific driver behind new-generat
Externí odkaz:
http://arxiv.org/abs/1704.05175
Autor:
Qin, Yuxiang, Mutch, Simon J., Duffy, Alan R., Geil, Paul M., Poole, Gregory B., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
Mon Not R Astron Soc (2017) 471 (4): 4345-4354
Massive quiescent galaxies (MQGs) are thought to have formed stars rapidly at early times followed by a long period of quiescence. The recent discovery of a MQG, ZF-COSMOS-20115 at $z\sim4$, only 1.5 Gyr after the big bang, places new constraints on
Externí odkaz:
http://arxiv.org/abs/1704.03274
Autor:
Park, Jaehong, Kim, Han-Seek, Liu, Chuanwu, Trenti, M., Duffy, Alan R., Geil, Paul M., Mutch, Simon J., Poole, Gregory B., Mesinger, Andrei, Wyithe, J. Stuart B.
We investigate the clustering properties of Lyman-break galaxies (LBGs) at $z\sim6$ - $8$. Using the semi-analytical model {\scshape Meraxes} constructed as part of the Dark-ages Reionization And Galaxy-formation Observables from Numerical Simulation
Externí odkaz:
http://arxiv.org/abs/1703.05419
Autor:
Qin, Yuxiang, Mutch, Simon J., Poole, Gregory B., Liu, Chuanwu, Angel, Paul W., Duffy, Alan R., Geil, Paul M., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 472, Issue 2, 1 December 2017, Pages 2009-2027
Motivated by recent measurements of the number density of faint AGN at high redshift, we investigate the contribution of quasars to reionization by tracking the growth of central supermassive black holes in an update of the Meraxes semi-analytic mode
Externí odkaz:
http://arxiv.org/abs/1703.04895
Autor:
Qin, Yuxiang, Duffy, Alan R., Mutch, Simon J., Poole, Gregory B., Geil, Paul M., Angel, Paul W., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
Mon Not R Astron Soc (2017) 467 (2): 1678-1693
We investigate how the hydrostatic suppression of baryonic accretion affects the growth rate of dark matter halos during the Epoch of Reionization. By comparing halo properties in a simplistic hydrodynamic simulation in which gas only cools adiabatic
Externí odkaz:
http://arxiv.org/abs/1701.03538
Autor:
Liu, Chuanwu, Mutch, Simon J., Poole, Gregory B., Angel, Paul W., Duffy, Alan R., Geil, Paul M., Mesinger, Andrei, Wyithe, J. Stuart B.
We investigate high-redshift galaxy sizes using a semi-analytic model constructed for the Dark-ages Reionization And Galaxy-formation Observables from Numerical Simulation project. Our fiducial model, including strong feedback from supernovae and pho
Externí odkaz:
http://arxiv.org/abs/1608.00819
Autor:
Mutch, Simon J., Liu, Chuanwu, Poole, Gregory B., Geil, Paul M., Duffy, Alan R., Trenti, Michele, Oesch, Pascal A., Illingworth, Garth D., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
MNRAS (December 21, 2016) 463 (4): 3556-3562
Using Hubble data, including new grism spectra, Oesch et al. recently identified GN-z11, an $M_\textrm{UV}$=-21.1 galaxy at $z$=11.1 (just 400Myr after the big bang). With an estimated stellar mass of $\sim$10$^9$M$_{\odot}$, this galaxy is surprisin
Externí odkaz:
http://arxiv.org/abs/1605.08054
Autor:
Geil, Paul M., Mutch, Simon J., Poole, Gregory B., Angel, Paul W., Duffy, Alan R., Mesinger, Andrei, Wyithe, J. Stuart B.
Publikováno v:
MNRAS (2016) 462 (1): 804-817
We use the Dark-ages, Reionization And Galaxy-formation Observables from Numerical Simulations (DRAGONS) framework to investigate the effect of galaxy-formation physics on the morphology and statistics of ionized hydrogen (HII) regions during the Epo
Externí odkaz:
http://arxiv.org/abs/1512.00564