Search Publications
HerMES: Lyman Break Galaxies Individually Detected at 0.7 <= z <= 2.0 in GOODS-N with Herschel/SPIRE
Pérez-Fournon, I.; Rodighiero, G.; Ilbert, O. +41 more
As part of the Herschel Multi-tiered Extragalactic Survey we have investigated the rest-frame far-infrared (FIR) properties of a sample of more than 4800 Lyman break galaxies (LBGs) in the Great Observatories Origins Deep Survey North field. Most LBGs are not detected individually, but we do detect a sub-sample of 12 objects at 0.7 < z < 1.6…
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev-Zel'dovich Clusters in the Southern Hemisphere
Gladders, M. D.; Rest, A.; Foley, R. J. +60 more
We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg2 SPT SZ survey region and was reported previously as SPT-CL J…
X-Ray Spectral Curvature of High-frequency-peaked BL Lac Objects: A Predictor for the TeV Flux
Elvis, M.; Massaro, F.; Paggi, A. +1 more
Most of the extragalactic sources detected at TeV energies are BL Lac objects. They belong to the subclass of high-frequency-peaked BL Lac objects (HBLs) exhibiting spectral energy distributions with a lower energy peak in the X-ray band; this is widely interpreted as synchrotron emission from relativistic electrons. The X-ray spectra are generall…
Evolution of the Dust/Gas Environment around Herbig Ae/Be Stars
Liu, Tie; Qin, Sheng-Li; Wu, Yuefang +2 more
Using the KOSMA 3 m telescope, 54 Herbig Ae/Be (HAe/Be) stars were surveyed in CO and 13CO emission lines. The properties of the stars and their circumstellar environments were studied by fitting spectral energy distributions (SEDs). The mean line width of 13CO (2-1) lines of this sample is 1.87 km s-1. The average…
Three-dimensional Reconstruction of an Erupting Filament with Solar Dynamics Observatory and STEREO Observations
Li, Ting; Yang, Shuhong; Zhang, Jun +1 more
On 2010 August 1, a global solar event was launched involving almost the entire Earth-facing side of the Sun. This event mainly consisted of a C3.2 flare, a polar crown filament eruption, and two Earth-directed coronal mass ejections. The observations from the Solar Dynamics Observatory (SDO) and STEREO showed that all the activities were coupled …
The Lack of Diffuse, Non-thermal Hard X-ray Emission in the Coma Cluster: The Swift Burst Alert Telescope's Eye View
Sarazin, Craig L.; Okajima, Takashi; Wik, Daniel R. +5 more
The Coma Cluster of galaxies hosts the brightest radio halo known and has therefore been the target of numerous searches for associated inverse Compton (IC) emission, particularly at hard X-ray energies where the IC signal must eventually dominate over thermal emission. The most recent search with the Suzaku Hard X-ray Detector failed to confirm p…
Three-dimensional Structure of a Solar Active Region from Spatially and Spectrally Resolved Microwave Observations
Gary, Dale E.; Georgoulis, Manolis K.; Tun, Samuel D.
We report on the structure of the solar atmosphere above active region (AR) 10923, observed on 2006 November 10, as deduced from multi-wavelength studies including combined microwave observations from the Very Large Array (VLA) and the Owens Valley Solar Array (OVSA). The VLA observations provide excellent image quality at a few widely spaced freq…
GSC 07396-00759 = V4046 Sgr C[D]: A Wide-separation Companion to the Close T Tauri Binary System V4046 Sgr AB
Donati, J. -F.; Audard, M.; Güdel, M. +13 more
We explore the possibility that GSC 07396-00759 (spectral type M1e) is a widely separated (~2farcm82, or projected separation ~12,350 AU) companion to the "old" (age ~12 Myr) classical T Tauri binary system V4046 Sgr AB, as suggested by the proximity and similar space motions of the two systems. If the two systems are equidistant and coeval, then …
Structure and Dynamics of the 2010 July 11 Eclipse White-light Corona
Seaton, D. B.; Golub, L.; Lucas, R. +8 more
The white-light corona (WLC) during the total solar eclipse on 2010 July 11 was observed by several teams in the Moon's shadow stretching across the Pacific Ocean and a number of isolated islands. We present a comparison of the WLC as observed by eclipse teams located on the Tatakoto Atoll in French Polynesia and on Easter Island, 83 minutes later…
Differential Emission Measure Analysis of a Polar Coronal Hole during the Solar Minimum in 2007
Hahn, M.; Savin, D. W.; Landi, E.
We have performed a differential emission measure (DEM) analysis for a polar coronal hole observed during solar minimum in 2007. Five observations are analyzed spanning the coronal hole from the central meridian to the boundary with the quiet-Sun corona. The observed heights ranged from 1.05 to 1.20 R sun. The analysis shows that the pl…