Gilbert, Karoline M., Font, Andreea S., Johnston, Kathryn V., Guhathakurta, Puragra
Extensive photometric and spectroscopic surveys of the Andromeda galaxy (M31) have discovered tidal debris features throughout M31's stellar halo. We present stellar kinematics and metallicities in...
The accretion of galaxies into groups and clusters (2009)
McGee, Sean L., Balogh, Michael L., Bower, Richard G., Font, Andreea S., McCarthy, Ian G.
We use the galaxy stellar mass and halo merger tree information from the semi-analytic model galaxy catalogue of Font et al. (2009) to examine the accretion of galaxies into a large sample of groups...
The Colours of Satellite Galaxies in Groups and Clusters (2008)
Font, Andreea S., Bower, Richard G., McCarthy, Ian G., Benson, Andrew J., Frenk, Carlos S., Helly, John C., ...
Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the ram...
Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters (2007)
McCarthy, Ian G., Frenk, Carlos S., Font, Andreea S., Lacey, Cedric G., Bower, Richard G., Mitchell, Nigel L., ...
We use a large suite of carefully controlled full hydrodynamic simulations to study the ram pressure stripping of the hot gaseous halos of galaxies as they fall into massive groups and clusters. The...
Font, Andreea S., Johnston, Kathryn V., Ferguson, Annette M. N., Bullock, James S., Robertson, Brant E., Tumlinson, Jason, ...
Recent observations have revealed that high surface-brightness, metal-rich debris is present over large regions of the Andromeda (M31) stellar halo. We use a set of numerical models to determine...
Phase-Space Distributions of Chemical Abundances in Milky Way-type Galaxy Halos (2005)
Font, Andreea S., Johnston, Kathryn V., Bullock, James S., Robertson, Brant E.
[Abridged] Motivated by upcoming data from astrometric and spectroscopic surveys of the Galaxy, we explore the chemical abundance properties and phase-space distributions in hierarchically-formed...
Font, Andreea S., Johnston, Kathryn V., Bullock, James S., Robertson, Brant
We present a cosmologically motivated model for the hierachical formation of the stellar halo which includes a semi-analytic treatment of galactic chemical enrichment coupled to numerical simulations...
Lambda-Cold Dark Matter, Stellar Feedback, and the Galactic Halo Abundance Pattern (2005)
Robertson, Brant, Bullock, James S., Font, Andreea S., Johnston, Kathryn V., Hernquist, Lars
(Abridged) The hierarchical formation scenario for the stellar halo requires the accretion and disruption of dwarf galaxies, yet low-metallicity halo stars are enriched in alpha-elements compared to...
Dynamics and Stellar Content of the Giant Southern Stream in M31. II. Interpretation (2004)
Font, Andreea S., Johnston, Kathryn V., Guhathakurta, Puragra, Majewski, Steven R., Rich, R. Michael
We examine the nature of the progenitor of the giant stellar stream in M31 using as constraints new radial velocity measurements of stream red giant stars (presented in the companion paper by...
Photoevaporation of Circumstellar Disks around Young Stars (2004)
Font, Andreea S., McCarthy, Ian G., Johnstone, Doug, Ballantyne, David R.
We examine the ability of photoevaporative disk winds to explain the low-velocity components observed in the forbidden line spectra of low-mass T Tauri stars. Using the analytic model of Shu,...
Halo Substructure and Disk Heating in a Lambda CDM Universe (2001)
Font, Andreea S., Navarro, Julio F., Stadel, Joachim, Quinn, Tom
We examine recent suggestions that substructure in cold dark matter (CDM) halos may be in conflict with the presence of thin, dynamically fragile stellar disks. N-body simulations of an isolated...
A Submillimeter Study of the Star-Forming Region NGC7129 (2000)
Font, Andreea S., Mitchell, George F., Sandell, Goeran
New molecular (13CO J=3-2) and dust continuum (450 and 850 micron) SCUBA maps of the NGC7129 star forming region are presented, complemented by C18O J=3-2 spectra at several positions within the...