Search Publications
Missions
Journals
Publication Years
The X-ray nuclei of intermediate-redshift radio sources
Hardcastle, M. J.; Croston, J. H.; Evans, D. A.
We present a Chandra and XMM-Newton spectral analysis of the nuclei of the radio galaxies and radio-loud quasars from the 3CRR sample in the redshift range 0.1 < z < 0.5. In the range of radio luminosity sampled by these objects, mostly Fanaroff-Riley type IIs (FR IIs), it has been clear for some time that a population of radio galaxies [low…
A Survey of Galaxy Kinematics to z~1 in the TKRS/GOODS-N Field. I. Rotation and Dispersion Properties
Weiner, Benjamin J.; Faber, S. M.; Willmer, Christopher N. A. +7 more
We present kinematic measurements of a large sample of galaxies from the Team Keck Redshift Survey in the GOODS-N field. We measure line-of-sight velocity dispersions from integrated emission for 1089 galaxies with median redshift 0.637 and spatially resolved kinematics for a subsample of 380 galaxies. This is the largest sample of galaxies to z~1…
3D spectroscopy with VLT/GIRAFFE. I. The true Tully Fisher relationship at z ∼ 0.6
Flores, H.; Hammer, F.; Puech, M. +2 more
A precise derivation of the evolution of the Tully Fisher is crucial to understand the interplay between dark matter and baryonic matter in cosmological models, using 15 deployable integral field units of FLAMES/GIRAFFE at VLT, we have recovered the velocity fields of 35 galaxies at intermediate redshift (0.4 < z < 0.75). This facility is ab…
Cosmic Evolution of Black Holes and Spheroids. I. The MBH-σ Relation at z = 0.36
Treu, Tommaso; Malkan, Matthew A.; Blandford, Roger D. +1 more
We test the evolution of the correlation between black hole mass and bulge velocity dispersion (MBH-σ), using a carefully selected sample of 14 Seyfert 1 galaxies at z=0.36+/-0.01. We measure velocity dispersion from stellar absorption lines around Mg b (5175 Å) and Fe (5270 Å) using high-S/N Keck spectra and estimate black hole mass fr…
Anisotropic Turbulent Spectra in the Terrestrial Magnetosheath as Seen by the Cluster Spacecraft
Balogh, A.; Belmont, G.; Sahraoui, F. +3 more
Here we report the first three-dimensional spatial spectrum of the low frequency magnetic turbulence obtained from the four Cluster spacecraft in the terrestrial magnetosheath close to the magnetopause. We show that the turbulence is compressible and dominated by mirror structures, its energy is injected at a large scale kρ∼0.3 (l∼2000 km) via a m…
The Large-Scale and Small-Scale Clustering of Lyman Break Galaxies at 3.5<=z<=5.5 from the GOODS Survey
Ouchi, Masami; Dickinson, Mark; Ferguson, Henry C. +4 more
We report on the angular correlation function of Lyman break galaxies (LBGs) at z~4 and 5 from deep samples obtained from the Great Observatories Deep Origins Survey (GOODS). As for LBGs at z~3, the shape of w(θ) of the GOODS LBGs is well approximated by a power law with a slope β~0.6 at angular separation θ>=10". The clustering strength of the…
The Rest-Frame Far-Ultraviolet Morphologies of Star-forming Galaxies at z ~ 1.5 and 4
Ferguson, Henry C.; Giavalisco, Mauro; Lotz, Jennifer M. +2 more
We apply a new approach to quantifying galaxy morphology and identifying galaxy mergers to the rest-frame far-ultraviolet images of 82 z~4 Lyman break galaxies (LBGs) and 55 1.2<z<1.8 emission-line galaxies in the GOODS and Ultra Deep Field survey. We compare the distributions of the Gini coefficient (G), the second-order moment of the brigh…
From Supermassive Black Holes to Dwarf Elliptical Nuclei: A Mass Continuum
Harris, William E.; Wehner, Elizabeth H.
Considerable evidence suggests that supermassive black holes reside at the centers of massive galactic bulges. At a lower galactic mass range, many dwarf galaxies contain extremely compact nuclei that structurally resemble massive globular clusters. We show that both these types of central massive objects (CMOs) define a single unbroken relation b…
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems
Henry, Todd J.; Mason, Brian D.; Jao, Wei-Chun +4 more
We present results of a reconnaissance for stellar companions to all 131 radial velocity-detected candidate extrasolar planetary systems known as of 2005 July 1. Common proper-motion companions were investigated using the multiepoch STScI Digitized Sky Surveys and confirmed by matching the trigonometric parallax distances of the primaries to compa…
Spitzer MIPS Infrared Imaging of M31: Further Evidence for a Spiral-Ring Composite Structure
Barmby, P.; Krause, O.; Gordon, K. D. +16 more
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a composite of two logarithmic spiral arms and a circular ring (radius ~10 kpc) of star formation offset from the nucleus. The two spiral arms appear t…