[PDF] Top 20 Structure and substructure in the stellar halo of the Milky Way

... triaxiality of the halo, and those who did agreed on w > 0 . 8 . We have also found a polar axis ratio of q = 0 . 77 ± 0 . 05 , where most of the previous works found 0 . 55 ≤ q ≤ 0 . 70 and some q ≤ 0 . 8 . ... See full document

... than twice of (disperion/ √ number of haloes) and are within the 2σ limit. For the case of stellar haloes, the bias is higher but still within 2.5 σ limit. We note that in BJ05 simulations, a stellar ... See full document

... extended stellar halo-structure is bound by the galaxy’s gravitational ...this structure is in proximity to the tidal radius, the majority of structure is well ...the ... See full document

... selection criteria based on energy, as done for Fig. 2 (since energy depends on the Galactic potential whose spatial variation across the volume explored is less well-constrained than its local value), nor on velocity as ... See full document

... the Milky Way. One way to then ex- plain the high bulge/disk annihilation ratio is that some disk positrons find their way into the Galactic bulge before they ...field structure of the ... See full document

... The authors would like to thank Tom Cornish for making available their original metallicity heatmap python code. The thorough comments and simple structure allowed us to grasp the concepts required for forming the ... See full document

... + 0.26 dex at ex ⇡ 4 eV. Owing to the fact that Fe ii is al- ready the dominant species, overionization only marginally af- fects its abundance (typical corrections for HD 122563 range from -0.002 dex to -0.010 dex). A ... See full document

... The thick disc was discovered by star counts (Yoshii 1982; Gilmore & Reid 1983) and contains stars that are older and have different composition from those in the thin disc. The thick disc is believed to be created ... See full document

... the halo component of the Galaxy, and elucidate its kinematic and chemical ...the halo consists of two broadly-overlapping structural components, an “inner halo" and an “outer ...and ... See full document

... total halo mass from collisionless simulations and then did a rank ordering of galaxies based on their stellar mass from the Sloan Digital Sky Survey ...corresponding stellar mass bins ...total ... See full document

... DM halo density profile to the value which gives the best fit to the morphology of the Galactic Cen- tre excess, γ = ...as stellar kinematics and microlensing, to con- strain the parameters of the mass ... See full document

... spiral structure and/or mergers are present) to transport out old, hot stars, with thick-disc chemical ...high stellar birth velocity dispersions at high redshift we find in our simulation ( ∼ 30–50 km/s) ... See full document

... Abstract. We aim to determine if the bulge formed via mergers as predicted by Cold Dark Matter (CDM) theory, or from disk instabilities, as suggested by its boxy shape, or both processes. We are observing about 28,000 ... See full document

... any stellar system ...inner halo, indicating that the inner and outer MW halos have evolved, at least chemically, homogeneously – which contrasts their otherwise diverse characteristics such as a younger ... See full document

... The hierarchical accretion process of building the MW Galaxy is being played out in front of us. The LMC-SMC interaction is a microcosm of the larger LG dramas, which will ultimately culminate in the amalgamation of the ... See full document

... non-universal stellar initial mass func- tion (IMF) for early type galaxies (ETGs) (Cappellari et ...comparing stellar mass measurements from kinematic data with those from spectral energy distribution ... See full document

... The structure of creditors is constantly dominated by do- mestic commercial banks, whereas the structure of beneficiaries has changed sig- nificantly throughout the observed ...the structure of the ... See full document

... a halo spin, fall within the observed range at ∼ 8 ...without halo spin, the bar’s strong dynamical heating causes the scale height to become too high, even in the bar’s outer ... See full document

... Becker concluded from his diagram showing the distribution in the galactic plane of clusters, associa­ tions, H II regions and neutral hydrogen according to Westerhout similar to fig.3 t[r] ... See full document

... Tracing the themes in my work over the past two decades has al- lowed me to see up close my tra- jectory from victim to victory. Re- turning to the fragment from the development of Princess Pocahontas noted at the ... See full document