Search Publications
The zCOSMOS-SINFONI Project. I. Sample Selection and Natural-seeing Observations
Lutz, D.; Daddi, E.; Förster Schreiber, N. M. +21 more
The zCOSMOS-SINFONI project is aimed at studying the physical and kinematical properties of a sample of massive z ~ 1.4-2.5 star-forming galaxies, through SINFONI near-infrared integral field spectroscopy (IFS), combined with the multiwavelength information from the zCOSMOS (COSMOS) survey. The project is based on one hour of natural-seeing observ…
Fluid Dynamics of Stellar Jets in Real Time: Third Epoch Hubble Space Telescope Images of HH 1, HH 34, and HH 47
Hartigan, P.; Frank, A.; Foster, J. M. +6 more
We present new, third-epoch Hubble Space Telescope Hα and [S II] images of three Herbig-Haro (HH) jets (HH 1&2, HH 34, and HH 47) and compare the new images with those from previous epochs. The high spatial resolution, coupled with a time series whose cadence is of order both the hydrodynamic and radiative cooling timescales of the flow, allow…
RCW 86: A Type Ia Supernova in a Wind-blown Bubble
Blair, William P.; Reynolds, Stephen P.; Raymond, John C. +7 more
We report results from a multi-wavelength analysis of the Galactic supernova remnant RCW 86, the proposed remnant of the supernova of 185 A.D. We show new infrared observations from the Spitzer Space Telescope and the Wide-Field Infrared Survey Explorer, where the entire shell is detected at 24 and 22 µm. We fit the infrared flux ratios with…
Discovery of a Multiply Lensed Submillimeter Galaxy in Early HerMES Herschel/SPIRE Data
Pérez-Fournon, I.; Rodighiero, G.; Valtchanov, I. +88 more
We report the discovery of a bright (f(250 µm)>400 mJy), multiply lensed submillimeter galaxy HERMES J105751.1+573027 in Herschel/SPIRE Science Demonstration Phase data from the HerMES project. Interferometric 880 µm Submillimeter Array observations resolve at least four images with a large separation of ~9''. A high-resolution adap…
A Population of X-Ray Weak Quasars: PHL 1811 Analogs at High Redshift
Brandt, W. N.; Hall, Patrick B.; Schneider, Donald P. +6 more
We report the results from Chandra and XMM-Newton observations of a sample of 10 type 1 quasars selected to have unusual UV emission-line properties (weak and blueshifted high-ionization lines; strong UV Fe emission) similar to those of PHL 1811, a confirmed intrinsically X-ray weak quasar. These quasars were identified by the Sloan Digital Sky Su…
The Brightest Gamma-Ray Flaring Blazar in the Sky: AGILE and Multi-wavelength Observations of 3C 454.3 During 2010 November
Maraschi, L.; Sakamoto, T.; Pian, E. +84 more
Since 2005, the blazar 3C 454.3 has shown remarkable flaring activity at all frequencies, and during the last four years it has exhibited more than one γ-ray flare per year, becoming the most active γ-ray blazar in the sky. We present for the first time the multi-wavelength AGILE, Swift, INTEGRAL, and GASP-WEBT data collected in order to explain t…
SMA Observations of GOODS 850-11 and GOODS 850-13: First Examples of Multiple Submillimeter Sources Resolved by an Interferometer
Williams, Jonathan P.; Wang, Wei-Hao; Cowie, Lennox L. +1 more
We carried out extremely sensitive Submillimeter Array (SMA) 340 GHz continuum imaging on two submillimeter galaxies (SMGs): GOODS 850-11 and GOODS 850-13. The observations reach sub-mJy rms sensitivities and, interestingly, resolve both sources into multiple, physically unrelated SMGs. GOODS 850-11 is resolved into two sources at different redshi…
Detection of the Cosmic Far-infrared Background in AKARI Deep Field South
Clements, D. L.; White, G. J.; Burgarella, D. +14 more
We report new limits on the absolute brightness and spatial fluctuations of the cosmic infrared background (CIB) via the AKARI satellite. We carried out observations at 65, 90, 140, and 160 µm as a cosmological survey in AKARI Deep Field South, which is one of the lowest cirrus regions with a contiguous area of the sky. After removing bright…
The Host Galaxies of Low-mass Black Holes
Ho, Luis C.; Barth, Aaron J.; Greene, Jenny E. +2 more
Using Hubble Space Telescope observations of 147 host galaxies of low-mass black holes (BHs), we systematically study the structures and scaling relations of these active galaxies. Our sample is selected to have central BHs with virial masses of ~105-106 M ⊙. The host galaxies have total I-band magnitudes of -23.2 …
Redshift Evolution of the Galaxy Velocity Dispersion Function
Brinchmann, Jarle; van Dokkum, Pieter G.; Franx, Marijn +9 more
We present a study of the evolution of the galaxy velocity dispersion function (VDF) from z = 0 to z = 1.5 using photometric data from the Ultra-Deep and the NEWFIRM Medium-Band Survey in the COSMOS field. The VDF has been measured locally using direct kinematic measurements from the Sloan Digital Sky Survey (SDSS), but direct studies of the VDF a…