Publications (10)
Chandra's View of the Ram Pressure Stripped Galaxy M86
S. Randall, P. Nulsen, W. R. Forman +4
We present results from a mosaic of nine Chandra observations of M86 and the surrounding field. We detect three main diffuse components: the Virgo ICM at ~2.4 keV, the extended hal…
Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals
E. Roediger, R. P. Kraft, P. E. J. Nulsen +6
Elliptical cluster galaxies are progressively stripped of their atmospheres due to their motion through the intra-cluster medium (ICM). Deep X-ray observations reveal the fine-stru…
Chandra Observations of Nuclear Outflows in the Elliptical Galaxy NGC4552 in the Virgo Cluster
M. Machacek, P. E. J. Nulsen, C. Jones +1
We use a 54.4 ks Chandra observation to study nuclear outflow activity in NGC4552 (M89), an elliptical galaxy in the Virgo Cluster. Chandra images in the 0.5-2 keV band show two ri…
Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89
E. Roediger, R. P. Kraft, P. E. J. Nulsen +6
Elliptical galaxies moving through the intra-cluster medium (ICM) are progressively stripped of their gaseous atmospheres. X-ray observations reveal the structure of galactic tails…
The Lyman Alpha Forest in Hierarchical Cosmologies
M. Machacek, G. Bryan, P. Anninos +3
The comparison of quasar absorption spectra with numerically simulated spectra from hierarchical cosmological models of structure formation promises to be a valuable tool to discri…
Chandra Observations of Gas Stripping in the Elliptical Galaxy NGC 4552 in the Virgo Cluster
M. Machacek, C. Jones, W. R. Forman +1
We use a 54.4 ks Chandra observation to study ram-pressure stripping in NGC4552 (M89), an elliptical galaxy in the Virgo Cluster. Chandra images in the 0.5-2 keV band show a sharp…
Hydrodynamical simulations of the Lyman-Alpha forest: data comparisons
A. Meiksin, G. Bryan, M. Machacek
Numerical hydrodynamical simulations are used to predict the expected absorption properties of the Lyman-Alpha forest for a variety of Cold Dark Matter dominated cosmological scena…
A Multiwavelength View of Star Formation in Interacting Galaxies in the Pavo Group
M. Machacek, M. L. N. Ashby, C. Jones +2
We combine Spitzer IRAC mid-infrared (MIR) and Chandra X-ray observations of the dominant galaxies NGC6872 and NGC6876 in the Pavo group with archival optical and HI data to study…
XMM-Newton Observation of an X-ray Trail Between the Spiral Galaxy NGC6872 and the Central Elliptical NGC6876 in the Pavo Group
M. Machacek, P. Nulsen, L. Stirbat +2
We present XMM-Newton observations of a trail of enhanced X-rayemission extending along the 8'.7 X 4' region between the spiral NGC6872 and the dominant elliptical NGC6876 in the P…
Infall of the Elliptical Galaxy NGC 1404 into the Fornax Cluster
M. Machacek, A. Dosaj, W. Forman +5
We use three Chandra observations, totalling 134.3 ks, to constrain the dynamical motion of NGC1404 falling towards the dominant elliptical NGC1399 through the Fornax ICM. NGC1404'…