Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Stewart, Kyle R."'
Autor:
Rubin, Kate H. R., Diamond-Stanic, Aleksandar M., Coil, Alison L., Crighton, Neil H. M., Stewart, Kyle R.
The circumgalactic medium (CGM) close to ~L* star-forming galaxies hosts strong MgII 2796 absorption (with equivalent width W_2796>0.1 Ang) with a near-unity covering fraction. To characterize the spatial coherence of this absorption, we analyze the
Externí odkaz:
http://arxiv.org/abs/1806.08801
Autor:
Howk, J. Christopher, Wotta, Christopher B., Berg, Michelle A., Lehner, Nicolas, Lockman, Felix J., Hafen, Zachary, Pisano, D. J., Faucher-Giguere, Claude-Andre, Wakker, Bart P., Prochaska, J. Xavier, Wolfe, Spencer A., Ribaudo, Joseph, Barger, Kathleen A., Corlies, Lauren, Fox, Andrew J., Guhathakurta, Puragra, Jenkins, Edward B., Kalirai, Jason, O'Meara, John M., Peeples, Molly S., Stewart, Kyle R., Strader, Jay
We present a deep search for HI 21-cm emission from the gaseous halo of Messier 31 as part of Project AMIGA, a large program Hubble Space Telescope program to study the circumgalactic medium of the Andromeda galaxy. Our observations with the Robert C
Externí odkaz:
http://arxiv.org/abs/1706.01893
Autor:
Stewart, Kyle R.
Publikováno v:
ASSL, 430, 249S, 2017
In this chapter, we review the role of gas accretion to the acquisition of angular momentum, both in galaxies and in their gaseous halos. We begin by discussing angular momentum in dark matter halos, with a brief review of tidal torque theory and the
Externí odkaz:
http://arxiv.org/abs/1612.00513
Autor:
Stewart, Kyle R., Brooks, Alyson M., Bullock, James S., Maller, Ariyeh H., Diemand, Juerg, Wadsley, James, Moustakas, Leonidas A.
Publikováno v:
ApJ, 769, 74, 2013
We use high-resolution cosmological hydrodynamic simulations to study the angular momentum acquisition of gaseous halos around Milky Way sized galaxies. We find that cold mode accreted gas enters a galaxy halo with ~70% more specific angular momentum
Externí odkaz:
http://arxiv.org/abs/1301.3143
Autor:
Stewart, Kyle R.
This note documents the methods used by the smartphone application, "GalMass," which has been released on the Android Market. GalMass estimates the halo virial mass (Mvir), stellar mass (Mstar), gas mass (Mgas), and galaxy gas fraction of a central g
Externí odkaz:
http://arxiv.org/abs/1109.3207
Autor:
Stewart, Kyle R., Kaufmann, Tobias, Bullock, James S., Barton, Elizabeth J., Maller, Ariyeh H., Diemand, Jürg, Wadsley, James
Publikováno v:
ApJ, 738, 39, 2011
We use cosmological SPH simulations to study the kinematic signatures of cool gas accretion onto a pair of well-resolved galaxy halos. Cold-flow streams and gas-rich mergers produce a circum-galactic component of cool gas that generally orbits with h
Externí odkaz:
http://arxiv.org/abs/1103.4388
Autor:
Stewart, Kyle R., Kaufmann, Tobias, Bullock, James S., Barton, Elizabeth J., Maller, Ariyeh H., Diemand, Jürg, Wadsley, James
Publikováno v:
ApJ (2011) 735 L1
We use cosmological SPH simulations to study the cool, accreted gas in two Milky Way-size galaxies through cosmic time to z=0. We find that gas from mergers and cold flow accretion results in significant amounts of cool gas in galaxy halos. This cool
Externí odkaz:
http://arxiv.org/abs/1012.2128
Publikováno v:
Astrophys.J.717:1043-1053,2010
We predict that there is a population of low-luminosity dwarf galaxies orbiting within the halo of the Milky Way that have surface brightnesses low enough to have escaped detection in star-count surveys. The overall count of stealth galaxies is sensi
Externí odkaz:
http://arxiv.org/abs/0912.1873
Autor:
Stewart, Kyle R.
The mapping between dark matter halo mass, galaxy stellar mass, and galaxy cold gas mass is not a simple linear relation, but is influenced by a wide array of galaxy formation processes. We implement observationally-normalized relations between dark
Externí odkaz:
http://arxiv.org/abs/0902.2214
Publikováno v:
Astrophys.J.702:307-317,2009
We use N-body simulations and observationally-normalized relations between dark matter halo mass, stellar mass, and cold gas mass to derive robust, arguably inevitable expectations about the baryonic content of major mergers out to redshift z~2. Firs
Externí odkaz:
http://arxiv.org/abs/0901.4336