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Physical Properties of Very Powerful FRII Radio Galaxies
Christopher P. O'Dea, Ruth A. Daly, Preeti Kharb +2
We estimate ages and physical properties of powerful radio galaxies. An analysis of new multi-wavelength VLA observations of eleven very powerful classical double (FRIIb) radio gal…
An Infrared Survey of Brightest Cluster Galaxies. II: Why are Some Brightest Cluster Galaxies Forming Stars?
Christopher P. O'Dea, Stefi A. Baum, George Privon +12
Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray lu…
HST NIR Snapshot Survey of 3CR Radio Source Counterparts II: An Atlas and Inventory of the Host Galaxies, Mergers and Companions
David J. E. Floyd, David Axon, Stefi Baum +10
We present the second part of an H-band (1.6 microns) atlas of z<0.3 3CR radio galaxies, using the Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (HST NI…
The Acceleration History of the Universe and the Properties of the Dark Energy
Ruth A. Daly, S. G. Djorgovski
The model-independent method of using type Ia supernovae proposed and developed by Daly and Djorgovski (2003, 2004) has been applied to the Riess et al. (2007) supernovae sample. A…
Improved Constraints on the Acceleration History of the Universe and the Properties of the Dark Energy
Ruth A. Daly, S. G. Djorgovski, Kenneth A. Freeman +4
We extend and apply a model-independent analysis method developed earlier by Daly & Djorgovski to new samples of supernova standard candles, radio galaxy and cluster standard ruler…
WFPC2 LRF Imaging of Emission Line Nebulae in 3CR Radio Galaxies
G. C. Privon, C. P. O'Dea, S. A. Baum +5
We present HST/WFPC2 Linear Ramp Filter images of high surface brightness emission lines (either [OII], [OIII], or H-alpha+[NII]) in 80 3CR radio sources. We overlay the emission l…
Cosmological Studies with Radio Galaxies and Supernovae
Ruth A. Daly, Matthew P. Mory, C. P. O'Dea +4
Physical sizes of extended radio galaxies can be employed as a cosmological "standard ruler", using a previously developed method. Eleven new radio galaxies are added to our previo…
The Properties and Gaseous Environments of Powerful Classical Double Radio Galaxies
Ruth Daly, C. O'Dea, P. Kharb +3
The properties of a sample of 31 very powerful classical double radio galaxies with redshifts between zero and 1.8 are studied. The source velocities, beam powers, ambient gas dens…
Star Formation, Radio Sources, Cooling X-ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096
Megan Donahue, Ming Sun, Christopher P. O'Dea +2
We present deep emission-line imaging taken with the SOAR Optical Imaging Camera of the brightest cluster galaxy (BCG) in the nearby (z=0.035) X-ray cluster 2A0335+096. We analyze…
Dominant Nuclear Outflow Driving Mechanisms in Powerful Radio Galaxies
Dan Batcheldor, Clive Tadhunter, Joanna Holt +4
In order to identify the dominant nuclear outflow mechanisms in Active Galactic Nuclei, we have undertaken deep, high resolution observations of two compact radio sources (PKS 1549…
Star formation in the hosts of GHz peaked spectrum and compact steep spectrum radio galaxies
A. Labiano, C. P. O'Dea, P. D. Barthel +2
AIMS: Search for star formation regions in the hosts of potentially young radio galaxies (Gigahertz Peaked Spectrum and Compact Steep Spectrum sources). METHODS: Near-UV imaging wi…
A Radio Study of 13 Powerful FRII Radio Galaxies
P. Kharb, C. O'Dea, S. Baum +4
We have observed a sample of 13 large, powerful Fanaroff-Riley type II radio galaxies with the Very Large Array in multiple configurations and at multiple frequencies. We have comb…
GPS radio sources: new optical observations and an updated master list
A. Labiano, P. D. Barthel, C. P. O'Dea +3
* Aims. Identify optical counterparts, address uncertain identifications and measure previously unknown redshifts of the host galaxies of candidate GPS radio sources, and study the…
XMM-NEWTON Detection of X-ray Emission from the Compact Steep Spectrum Radio Galaxy 3C303.1
C. O'Dea, B. Mu, D. Worrall +3
Using XMM we detect faint unresolved X-ray emission from the Compact Steep Spectrum radio galaxy 3C303.1. We detect a thermal component at kT = 0.8 keV which seems likely to be pro…
A Radio Study of the Seyfert galaxy Markarian 6: Implications for Seyfert life-cycles
P. Kharb, C. P. O'Dea, S. A. Baum +2
We have carried out an extensive radio study with the Very Large Array on the Seyfert 1.5 galaxy Mrk 6 and imaged a spectacular radio structure in the source. The radio emission oc…
Optical Polarimetry of the Jets of Nearby Radio Galaxies: I. The Data
Eric S. Perlman, C. A. Padgett, Markos Georganopoulos +11
We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-r…
Spitzer IRS spectra of a large sample of Seyfert galaxies: a variety of infrared SEDs in the local AGN population
Catherine L. Buchanan, Jack F. Gallimore, Christopher P. O'Dea +5
We are conducting a large observing program with the Spitzer Space Telescope to determine the mid-to-far infrared spectral energy distributions of a well-defined sample of 87 nearb…
A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei
J. F. Gallimore, D. J. Axon, C. P. O'Dea +2
Seyfert galaxies commonly host compact jets spanning 10-100 pc scales, but larger structures (KSRs) are resolved out in long baseline, aperture synthesis surveys. We report a new,…
Infrared SEDs of Seyfert Galaxies: Starbursts and the Nature of the Obscuring Medium
Catherine L. Buchanan, Jack F. Gallimore, Christopher P. O'Dea +5
We present the results of IRS low-resolution spectroscopy of 51 Seyfert galaxies, part of a large Spitzer observing program to determine the mid-to-far infrared spectral energy dis…
Hubble Space Telescope Near-Infrared Snapshot Survey of 3CR radio source counterparts at low redshift
Juan P. Madrid, Marco Chiaberge, David Floyd +9
We present newly acquired images of the near-infrared counterpart of 3CR radio sources. All the sources were selected to have a redshift of less than 0.3 to allow us to obtain the…
An optical-IR jet in 3C133
David J. E. Floyd, Robert Laing, Marco Chiaberge +10
We report the discovery of a new optical-IR synchrotron jet in the radio galaxy 3C133 from our HST/NICMOS snapshot survey. The jet and eastern hotspot are well resolved, and visibl…
Star formation in hosts of young radio galaxies
A. Labiano, C. P. O'Dea, P. D. Barthel +2
We present near ultraviolet imaging with the Hubble Space Telescope Advanced Camera for Surveys, targeting young radio galaxies (Gigahertz Peaked Spectrum and Compact Steep Spectru…
The Jet and Circumnuclear Environment of 3C 293
David J. E. Floyd, Eric Perlman, J. Patrick Leahy +5
We present the new HST near-infrared polarimetry, broad and narrow-band imaging, and MERLIN 4.5GHz Multi-Frequency Synthesis radio imaging of 3C 293, a unique radio galaxy whose ho…
The Warped Nuclear Disk of Radio Galaxy 3C 449
Grant R. Tremblay, Alice C. Quillen, David J. E. Floyd +11
Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio source 3C 449 is an outlie…