Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Fitts, Alex"'
Autor:
Mercado, Francisco J., Bullock, James S., Boylan-Kolchin, Michael, Moreno, Jorge, Wetzel, Andrew, El-Badry, Kareem, Graus, Andrew S., Fitts, Alex, Hopkins, Philip F., Faucher-Giguère, Claude-André
We explore the origin of stellar metallicity gradients in simulated and observed dwarf galaxies. We use FIRE-2 cosmological baryonic zoom-in simulations of 26 isolated galaxies as well as existing observational data for 10 Local Group dwarf galaxies.
Externí odkaz:
http://arxiv.org/abs/2009.01241
Autor:
Lazar, Alexandres, Bullock, James S., Boylan-Kolchin, Michael, Chan, T. K., Hopkins, Philip F., Graus, Andrew S., Wetzel, Andrew, El-Badry, Kareem, Wheeler, Coral, Straight, Maria C., Kereš, Dušan, Faucher-Giguère, Claude-André, Fitts, Alex, Garrison-Kimmel, Shea
We analyze the cold dark matter density profiles of 54 galaxy halos simulated with FIRE-2 galaxy formation physics, each resolved within $0.5\%$ of the halo virial radius. These halos contain galaxies with masses that range from ultra-faint dwarfs ($
Externí odkaz:
http://arxiv.org/abs/2004.10817
Autor:
Garrison-Kimmel, Shea, Wetzel, Andrew, Hopkins, Phillip F., Sanderson, Robyn, El-Badry, Kareem, Graus, Andrew, Chan, T. K., Feldmann, Robert, Boylan-Kolchin, Michael, Hayward, Christopher, Bullock, James S., Fitts, Alex, Samuel, Jenna, Wheeler, Coral, Keres, Dusan, Faucher-Giguere, Claude-Andre
We study star formation histories (SFHs) of $\simeq500$ dwarf galaxies (stellar mass $M_\ast = 10^5 - 10^9\,M_\odot$) from FIRE-2 cosmological zoom-in simulations. We compare dwarfs around individual Milky Way (MW)-mass galaxies, dwarfs in Local Grou
Externí odkaz:
http://arxiv.org/abs/1903.10515
Autor:
Graus, Andrew S., Bullock, James S., Fitts, Alex, Cooper, Michael C., Boylan-Kolchin, Michael, Weisz, Daniel R., Wetzel, Andrew, Feldmann, Robert, Faucher-Giguère, Claude-André, Quataert, Eliot, Hopkins, Philip F., Keres, Dusan
We explore the radial variation of star formation histories in dwarf galaxies simulated with Feedback In Realistic Environments (FIRE) physics. The sample contains 9 low-mass field dwarfs with M_ star = 10^5 - 10^7 M_sun from previous FIRE results, a
Externí odkaz:
http://arxiv.org/abs/1901.05487
Autor:
Fitts, Alex, Boylan-Kolchin, Michael, Bozek, Brandon, Bullock, James S., Graus, Andrew, Robles, Victor, Hopkins, Philip F., El-Badry, Kareem, Garrison-Kimmel, Shea, Faucher-Giguère, Claude-André, Wetzel, Andrew, Kereš, Dušan
We present a suite of FIRE-2 cosmological zoom-in simulations of isolated field dwarf galaxies, all with masses of $M_\mathrm{halo} \approx 10^{10}\,$M$_\odot$ at $z=0$, across a range of dark matter models. For the first time, we compare how both se
Externí odkaz:
http://arxiv.org/abs/1811.11791
Autor:
Bozek, Brandon, Fitts, Alex, Boylan-Kolchin, Michael, Garrison-Kimmel, Shea, Abazajian, Kevork, Bullock, James S., Keres, Dusan, Faucher-Giguere, Claude-Andre, Wetzel, Andrew, Feldmann, Robert, Hopkins, Philip F.
We study the impact of a warm dark matter (WDM) cosmology on dwarf galaxy formation through a suite of cosmological hydrodynamical zoom-in simulations of $M_{\rm halo} \approx10^{10}\,M_{\odot}$ dark matter halos as part of the Feedback in Realistic
Externí odkaz:
http://arxiv.org/abs/1803.05424
Autor:
Fitts, Alex, Boylan-Kolchin, Michael, Bullock, James S., Weisz, Daniel R., El-Badry, Kareem, Wheeler, Coral, Faucher-Giguère, Claude-André, Quataert, Eliot, Hopkins, Philip F., Kereš, Dušan, Wetzel, Andrew, Hayward, Chris
We investigate the merger histories of isolated dwarf galaxies based on a suite of 15 high-resolution cosmological zoom-in simulations, all with masses of $M_{\rm halo} \approx 10^{10}\,{\rm M}_{\odot}$ (and M$_\star\sim10^5-10^7\,{\rm M}_{\odot}$) a
Externí odkaz:
http://arxiv.org/abs/1801.06187
Autor:
El-Badry, Kareem, Bradford, Jeremy, Quataert, Eliot, Geha, Marla, Boylan-Kolchin, Michael, Weisz, Daniel R., Wetzel, Andrew, Hopkins, Philip F., Chan, T. K., Fitts, Alex, Kereš, Dušan, Faucher-Giguère, Claude-André
The shape of a galaxy's spatially unresolved, globally integrated 21-cm emission line depends on its internal gas kinematics: galaxies with rotation-supported gas disks produce double-horned profiles with steep wings, while galaxies with dispersion-s
Externí odkaz:
http://arxiv.org/abs/1801.03933
Autor:
Robles, Victor H., Bullock, James S., Elbert, Oliver D., Fitts, Alex, González-Samaniego, Alejandro, Boylan-Kolchin, Michael, Hopkins, Philip F., Faucher-Giguère, Claude-André, Kereš, Dušan, Hayward, Christopher C.
We compare a suite of four simulated dwarf galaxies formed in 10$^{10} M_{\odot}$ haloes of collisionless Cold Dark Matter (CDM) with galaxies simulated in the same haloes with an identical galaxy formation model but a non-zero cross-section for dark
Externí odkaz:
http://arxiv.org/abs/1706.07514
Autor:
Gonzalez-Samaniego, Alejandro, Bullock, James S., Boylan-Kolchin, Michael, Fitts, Alex, Elbert, Oliver D., Hopkins, Philip F., Kereš, Dušan, Faucher-Giguère, Claude-André
We use a suite of high-resolution cosmological dwarf galaxy simulations to test the accuracy of commonly-used mass estimators from Walker et al.(2009) and Wolf et al.(2010), both of which depend on the observed line-of-sight velocity dispersion and t
Externí odkaz:
http://arxiv.org/abs/1706.05383