100 citations · 559 across the 18 of their papers we have counts for
10 papers · 1 filter
The Halo Mass-Temperature Relation for Clusters, Groups, and Galaxies
Iurii Babyk, Brian McNamara
The halo mass-temperature relation for a sample of 216 galaxy clusters, groups, and individual galaxies observed by X-ray Observatory is presented. Using accurate spectra…
A Trail of the Invisible: Blue Globular Clusters Trace the Radial Density Distribution of the Dark Matter -- Case Study of NGC 4278
Matthias Kluge, Rhea-Silvia Remus, Iurii V. Babyk +2
We present new, deep optical observations of the early-type galaxy NGC 4278, which is located in a small loose group. We find that the galaxy lacks fine substructure, i.e., it appe…
Molecular Flows in Contemporary Active Galaxies and the Efficacy of Radio-Mechanical Feedback
Prathamesh D. Tamhane, Brian R. McNamara, Helen R. Russell +4
Molecular gas flows are analyzed in 14 cluster galaxies (BCGs) centered in cooling hot atmospheres. The BCGs contain of molecular gas, much of which is…
Atmospheric pressure and molecular cloud formation in early-type galaxies
Iurii Babyk, Brian McNamara, Paul Nulsen +3
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospher…
Measuring Dark Matter in Galaxies: The Mass Fraction Within 5 Effective Radii
William E. Harris, Rhea-Silvia Remus, Gretchen L. H. Harris +1
Large galaxies may contain an "atmosphere" of hot interstellar X-ray gas, and the temperature and radial density profile of this gas can be used to measure the total mass of the ga…
Thermally Unstable Cooling Stimulated by Uplift: The Spoiler Clusters
C. G. Martz, B. R. McNamara, P. E. J. Nulsen +9
We analyzed Chandra X-ray observations of five galaxy clusters whose atmospheric cooling times, entropy parameters, and cooling time to free-fall time ratios within the central gal…
Globular Cluster Systems and X-Ray Atmospheres in Galaxies
Gretchen L. H. Harris, Iurii V. Babyk, William E. Harris +1
We compare the empirical relationships between the mass of a galaxy's globular system M_GCS, the gas mass in the hot X-ray atmosphere M_X within a fiducial radius of 5 r_e, the tot…
Origins of molecular clouds in early-type galaxies
Iu. V. Babyk, B. R. McNamara, P. D. Tamhane +3
We analyze observations of the hot atmospheres of 40 early spiral and elliptical galaxies. Using new temperature, density, cooling time, and mass profiles, we explore rel…
X-ray scaling relations of early-type galaxies
Iu. V. Babyk, B. R. McNamara, P. E. J. Nulsen +5
X-ray luminosity, temperature, gas mass, total mass, and their scaling relations are derived for 94 early-type galaxies using archival X-ray Observatory observations. Con…
The Onset of Thermally Unstable Cooling from the Hot Atmospheres of Giant Galaxies in Clusters - Constraints on Feedback Models
M. T. Hogan, B. R. McNamara, F. Pulido +7
We present accurate mass and thermodynamic profiles for a sample of 56 galaxy clusters observed with the Chandra X-ray Observatory. We investigate the effects of local gravitationa…