Search Publications
The Bright End of the Ultraviolet Luminosity Function at z ~ 8: New Constraints from CANDELS Data in GOODS-South
Trenti, M.; Oesch, P. A.; Carollo, C. M. +7 more
We present new z ~ 8 galaxy candidates from a search over ~95 arcmin2 of WFC3/IR data, tripling the previous search area for bright z ~ 8 galaxies. Our analysis uses newly acquired WFC3/IR imaging data from the CANDELS Multi-Cycle Treasury program over the GOODS-South field. These new data are combined with existing deep optical Advance…
Kinetic structure and wave properties associated with sharp dipolarization front observed by Cluster
Deng, X. H.; Huang, S. Y.; Yuan, Z. G. +6 more
Multiple dipolarization fronts (DFs) were observed by Cluster spacecraft in the magnetotail during a substorm. These DFs were kinetic structures, embedded in the bursty plasma flow, and moved earthward (mainly) and dawnward. Intense electric field, parallel and perpendicular currents were detected in the DF layer. These front layers were energy di…
A tidal disruption-like X-ray flare from the quiescent galaxy SDSS J120136.02+300305.5
Read, A. M.; Esquej, P.; Komossa, S. +4 more
Aims: The study of tidal disruption flares from galactic nuclei has historically been hampered by a lack of high quality spectral observations taken around the peak of the outburst. Here we introduce the first results from a program designed to identify tidal disruption events at their peak by making near-real-time comparisons of the flux see…
The most extreme ultraluminous X-ray sources: evidence for intermediate-mass black holes?
Sutton, Andrew D.; Roberts, Timothy P.; Walton, Dominic J. +2 more
We present the results from an X-ray and optical study of a new sample of eight extreme luminosity ultraluminous X-ray source (ULX) candidates, which were selected as the brightest ULXs (with LX > 5 × 1040 erg s-1) located within 100 Mpc identified in a cross-correlation of the 2XMM-DR1 and RC3 catalogues. These…
Vertical Atmospheric Structure in a Variable Brown Dwarf: Pressure-dependent Phase Shifts in Simultaneous Hubble Space Telescope-Spitzer Light Curves
Burrows, Adam; Showman, Adam P.; Apai, Dániel +6 more
Heterogeneous clouds or temperature perturbations in rotating brown dwarfs produce variability in the observed flux. We report time-resolved simultaneous observations of the variable T6.5 brown dwarf 2MASS J22282889-431026 over the wavelength ranges 1.1-1.7 µm and broadband 4.5 µm. Spectroscopic observations were taken with Wide Field …
Magnetic Reconnection in the Solar Wind
Gosling, J. T.
It is only within the last 5 years that we have learned how to recognize the unambiguous signature of magnetic reconnection in the solar wind in the form of roughly Alfvénic accelerated plasma flows embedded within bifurcated magnetic field reversal regions (current sheets). This paper provides a brief overview of what has since been learned about…
Galactic cold cores. III. General cloud properties
Bernard, J. -P.; Falgarone, E.; Juvela, M. +15 more
Context. In the project galactic cold cores we are carrying out Herschel photometric observations of cold regions of the interstellar clouds as previously identified with the Planck satellite. The aim of the project is to derive the physical properties of the population of cold clumps and to study its connection to ongoing and future star formatio…
Diffuse Lyα haloes around Lyα emitters at z=3: do dark matter distributions determine the Lyα spatial extents?
Ouchi, M.; Yamada, T.; Matsuda, Y. +7 more
Using stacks of Lyα images of 2128 Lyα emitters (LAEs) and 24 proto-cluster UV-selected galaxies (LBGs) at z = 3.1, we examine the surface brightness profiles of Lyα haloes around high-z galaxies as a function of environment and UV luminosity. We find that the slopes of the Lyα radial profiles become flatter as the Mpc-scale LAE surface density in…
Mapping the cold dust temperatures and masses of nearby KINGFISH galaxies with Herschel
Roussel, H.; Armus, L.; Weiss, A. +18 more
Taking advantage of the unprecedented combination of sensitivity and angular resolution afforded by the Herschel Space Observatory at far-infrared and submillimetre wavelengths, we aim to characterize the physical properties of cold dust within nearby galaxies, as well as the associated uncertainties, namely the robustness of the parameters we der…
Sulfur chemistry in the middle atmosphere of Venus
Belyaev, Denis A.; Zhang, Xi; Yung, Yuk L. +2 more
Venus Express measurements of the vertical profiles of SO and SO 2 in the middle atmosphere of Venus provide an opportunity to revisit the sulfur chemistry above the middle cloud tops (∼58 km). A one dimensional photochemistry-diffusion model is used to simulate the behavior of the whole chemical system including oxygen-, hydrogen-, chl…