Search Publications
Evolution of the Sizes of Galaxies over 7 < z < 12 Revealed by the 2012 Hubble Ultra Deep Field Campaign
Ono, Yoshiaki; Ouchi, Masami; Koekemoer, Anton M. +14 more
We analyze the redshift- and luminosity-dependent sizes of dropout galaxy candidates in the redshift range z ~ 7-12 using deep images from the 2012 Hubble Ultra Deep Field (UDF12) campaign, which offers two advantages over that used in earlier work. First, we utilize the increased signal-to-noise ratio offered by the UDF12 imaging to provide impro…
Far-infrared Fine-structure Line Diagnostics of Ultraluminous Infrared Galaxies
Clements, D. L.; Cooray, A.; Farrah, D. +16 more
We present Herschel observations of 6 fine-structure lines in 25 ultraluminous infrared galaxies at z < 0.27. The lines, [O III]52 µm, [N III]57 µm, [O I]63 µm, [N II]122 µm, [O I]145 µm, and [C II]158 µm, are mostly single Gaussians with widths <600 km s-1 and luminosities of 107-10<…
Enhanced Magnetic Compressibility and Isotropic Scale Invariance at Sub-ion Larmor Scales in Solar Wind Turbulence
Sahraoui, F.; Khotyaintsev, Yu. V.; Chapman, S. C. +3 more
The anisotropic nature of solar wind magnetic turbulence fluctuations is investigated scale by scale using high cadence in situ magnetic field measurements from the Cluster and ACE spacecraft missions. The data span five decades in scales from the inertial range to the electron Larmor radius. In contrast to the inertial range, there is a successiv…
The Nearest Millisecond Pulsar Revisited with XMM-Newton: Improved Mass-radius Constraints for PSR J0437-4715
Bogdanov, Slavko
I present an analysis of the deepest X-ray exposure of a radio millisecond pulsar (MSP) to date, an X-ray Multi Mirror-Newton European Photon Imaging Camera spectroscopic and timing observation of the nearest known MSP, PSR J0437-4715. The timing data clearly reveal a secondary broad X-ray pulse offset from the main pulse by ~0.55 in rotational ph…
Diagnostics of AGN-Driven Molecular Outflows in ULIRGs from Herschel-PACS Observations of OH at 119 µm
Clements, D. L.; Farrah, D.; Rigopoulou, D. +14 more
We report on our observations of the 79 and 119 µm doublet transitions of OH for 24 local (z < 0.262) ULIRGs observed with Herschel-PACS as part of the Herschel ULIRG Survey (HERUS). Some OH 119 µm profiles display a clear P-Cygni shape and therefore imply outflowing OH gas, while other profiles are predominantly in absorption or ar…
A Radio-selected Black Hole X-Ray Binary Candidate in the Milky Way Globular Cluster M62
Heinke, Craig; Strader, Jay; Maccarone, Thomas J. +5 more
We report the discovery of a candidate stellar-mass black hole in the Milky Way globular cluster M62. We detected the black hole candidate, which we call M62-VLA1, in the core of the cluster using deep radio continuum imaging from the Karl G. Jansky Very Large Array. M62-VLA1 is a faint source with a flux density of 18.7 ± 1.9 µJy at 6.2 GHz…
Interacting Cosmic Rays with Molecular Clouds: A Bremsstrahlung Origin of Diffuse High-energy Emission from the Inner 2°×1° of the Galactic Center
Hewitt, J. W.; Nobukawa, M.; Tsuru, T. G. +8 more
The high-energy activity in the inner few degrees of the Galactic center is traced by diffuse radio, X-ray, and γ-ray emission. The physical relationship between different components of diffuse gas emitting at multiple wavelengths is a focus of this work. We first present radio continuum observations using the Green Bank Telescope and model the no…
The Lyman Alpha Reference Sample: Extended Lyman Alpha Halos Produced at Low Dust Content
Verhamme, Anne; Cannon, John M.; Hayes, Matthew +14 more
We report on new imaging observations of the Lyman alpha emission line (Lyα), performed with the Hubble Space Telescope, that comprise the backbone of the Lyman alpha Reference Sample. We present images of 14 starburst galaxies at redshifts 0.028 < z < 0.18 in continuum-subtracted Lyα, Hα, and the far ultraviolet continuum. We show that Lyα …
Cosmic Shear Results from the Deep Lens Survey. I. Joint Constraints on Ω M and σ8 with a Two-dimensional Analysis
Tyson, J. Anthony; Hilbert, Stefan; Schneider, Michael D. +3 more
We present a cosmic shear study from the Deep Lens Survey (DLS), a deep BVRz multi-band imaging survey of five 4 deg2 fields with two National Optical Astronomy Observatory (NOAO) 4 m telescopes at Kitt Peak and Cerro Tololo. For both telescopes, the change of the point-spread-function (PSF) shape across the focal plane is complicated, …
Extragalactic Millimeter-wave Point-source Catalog, Number Counts and Statistics from 771 deg2 of the SPT-SZ Survey
Béthermin, M.; Rest, A.; Chapman, S. +54 more
We present a point-source catalog from 771 deg2 of the South Pole Telescope Sunyaev-Zel'dovich survey at 95, 150, and 220 GHz. We detect 1545 sources above 4.5σ significance in at least one band. Based on their relative brightness between survey bands, we classify the sources into two populations, one dominated by synchrotron emission f…