The Galactic halo contains a complex ecosystem of multiphase intermediate-velocity and high-velocity gas clouds whose origin has defied clear explanation. They are generally believed to be involved in Galaxy-wide recycling process, either through an accretion flow or large-scale fountain flow, both. We examine the evolution these light recent claims that they may trigger condensation from corona as move it. measure along cloud's wake, with without presence ambient magnetic field, using two-...

High velocity gas that does not conform to Galactic rotation is observed throughout the Galaxy's halo. One component of this gas, HI high clouds (HVCs), have attracted attention since their discovery in 1960s and remain controversial terms origins, largely due lack reliable distance estimates. The recent enhanced magnetic fields towards HVCs has encouraged us explore connection cloud evolution, kinematics, survival as they fall through magnetized For a reasonable model for halo field, most...

From a large sample of $\approx 170,000$ local SDSS galaxies, we find that the Fundamental Metallicity Relation (FMR) has an overabundance outliers, compared to what would be expected from Gaussian distribution residuals, with significantly lower metallicities than predicted their stellar mass and star formation rate (SFR). This low-metallicity population masses, bimodial specific SFRs enhanced within aperture smaller half-light radii general sample, is hence physically distinct population....

ABSTRACT The large temperature difference between cold gas clouds around galaxies and the hot haloes that they are moving through suggests thermal conduction could play an important role in circumgalactic medium. However, presence of a magnetic field is highly anisotropic, being strongly suppressed direction perpendicular to lines. This commonly modelled by using simple prescription assumes isotropic at certain efficiency f < 1, but its precise value largely unconstrained. We...

ABSTRACT Throughout the passage within Galactic halo, high-velocity clouds (HVCs) sweep up ambient magnetic fields and form stretched draped configurations of around them. Many earlier numerical studies adopt spherically symmetric uniform-density as initial conditions for simplicity. However, observations demonstrate that HVCs are clumpy turbulent. In this paper, we perform 3D magnetohydrodynamic simulations to study evolution with density distributions described by power-law spatial power...

ABSTRACT High-velocity clouds (HVCs) are believed to be an important source of gas accretion for star formation in the Milky Way. Earlier numerical studies have found that Galactic magnetic field and radiative cooling strongly affects accretion. However, these effects not previously been included together context falling through Way’s gravitational potential. We explore this by simulating initially stationary cloud hot hydrostatic corona towards disc. This represents HVC has condensed out...

ABSTRACT Galactic halos accrete material from the intergalactic medium (IGM) and part of this accretion is expected to be in form cool (T ∼ 104 K) gas. A signature process could reside detection numerous clouds circumgalactic (CGM). However, whether able onto galaxies feed their star formation or, instead, evaporates into CGM hot phase (corona, T 106 K), not yet understood. Here, we investigate evolution accreted IGM falling through corona low-redshift disc galaxies, using 3D high-resolution...

ABSTRACT Satellite galaxies within the Milky Way’s (MW's) virial radius Rvir are typically devoid of cold gas due to ram pressure stripping by MW’s corona. The density this corona is poorly constrained today and essentially unconstrained in past, but can be estimated using stripping. In paper, we probe MW's at z ≈ 1.6 Draco dwarf spheroidal galaxy. We assume that (i) Draco’s orbit determined its interaction with MW, whose dark matter halo evolve time following cosmologically motivated...

Satellite galaxies within the Milky Way's (MW) virial radius $R_{\mathrm{vir}}$ are typically devoid of cold gas due to ram pressure stripping by MW's corona. The density this corona is poorly constrained today and essentially unconstrained in past, but can be estimated using stripping. In paper, we probe MW at $z\approx 1.6$ Draco dwarf spheroidal galaxy. We assume that i) Draco's orbit determined its interaction with MW, whose dark matter halo evolve time following cosmologically-motivated...

Throughout the passage within Galactic halo, high-velocity clouds (HVCs) sweep up ambient magnetic fields and form stretched draped configurations of around them. Many earlier numerical studies adopt spherically symmetric uniform-density as initial conditions for simplicity. However, observations demonstrate that HVCs are clumpy turbulent. In this paper, we perform 3D magnetohydrodynamic simulations to study evolution with density distributions described by power-law spatial power spectra....

Galactic halos accrete material from the intergalactic medium (IGM) and part of this accretion is expected to be in form cool ($T\sim10^4$ K) gas. A signature process could reside detection numerous clouds circumgalactic (CGM). However, whether able onto galaxies feed their star formation or, instead, evaporates into CGM hot phase (corona, $T\sim10^6$ K), not yet understood. Here, we investigate evolution accreted IGM falling through corona low-redshift disc galaxies, using 3D...