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Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broadband Time Delays in NGC 5548
Im, M.; Geier, S.; Brandt, W. N. +94 more
We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multiwavelength reverberation mapping campaign. The light curves have nearly daily cadence from 2014 January to July in nine filters (BVRI and ugriz). Combined with ultraviolet data from the Hubble Space Telescope and Swift, we confirm significant time de…
Planck 2015 results. IX. Diffuse component separation: CMB maps
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +237 more
We present foreground-reduced cosmic microwave background (CMB) maps derived from the full Planck data set in both temperature and polarization. Compared to the corresponding Planck 2013 temperature sky maps, the total data volume is larger by a factor of 3.2 for frequencies between 30 and 70 GHz, and by 1.9 for frequencies between 100 and 857 GHz…
Eight per cent leakage of Lyman continuum photons from a compact, star-forming dwarf galaxy
Schaerer, D.; Thuan, T. X.; Izotov, Y. I. +4 more
One of the key questions in observational cosmology is the identification of the sources responsible for ionization of the Universe after the cosmic ‘Dark Ages’, when the baryonic matter was neutral. The currently identified distant galaxies are insufficient to fully reionize the Universe by redshift z ≈ 6 (refs 1, 2, 3), but low-mass, star-formin…
A homogeneous nucleus for comet 67P/Churyumov-Gerasimenko from its gravity field
Jorda, L.; Pätzold, M.; Sierks, H. +13 more
Cometary nuclei consist mostly of dust and water ice. Previous observations have found nuclei to be low-density and highly porous bodies, but have only moderately constrained the range of allowed densities because of the measurement uncertainties. Here we report the precise mass, bulk density, porosity and internal structure of the nucleus of come…
Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues. First data release for the inner Milky Way: +68° ≥ l ≥ -70°
Bernard, J. -P.; Martin, P. G.; Natoli, P. +61 more
Aims: We present the first public release of high-quality data products (DR1) from Hi-GAL, the Herschel infrared Galactic Plane Survey. Hi-GAL is the keystone of a suite of continuum Galactic plane surveys from the near-IR to the radio and covers five wavebands at 70, 160, 250, 350 and 500 µm, encompassing the peak of the spectral energ…
Kiloparsec-scale Dust Disks in High-redshift Luminous Submillimeter Galaxies
Smail, I.; Ivison, R. J.; Menten, K. M. +22 more
We present high-resolution (0.″16) 870 µm Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous ({L}{IR}∼ 4× {10}12 {L}⊙ ) submillimeter galaxies (SMGs) from the ALESS survey of the Extended Chandra Deep Field South. This dust imaging traces the dust-obscured star formation in these z∼ 2.…
The XXL Survey. I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
Smith, G. P.; Chiappetti, L.; Altieri, B. +89 more
Context. The quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic spectrum. Over the past two decades, the Chandra and XMM-Newton observatories have supported numerous studies of X-ray-selected clusters of galaxies, acti…
On Galactic Density Modeling in the Presence of Dust Extinction
Bovy, Jo; Rix, Hans-Walter; Finkbeiner, Douglas P. +2 more
Inferences about the spatial density or phase-space structure of stellar populations in the Milky Way require a precise determination of the effective survey volume. The volume observed by surveys such as Gaia or near-infrared spectroscopic surveys, which have good coverage of the Galactic midplane region, is highly complex because of the abundant…
z ≳ 7 Galaxies with Red Spitzer/IRAC [3.6]-[4.5] Colors in the Full CANDELS Data Set: The Brightest-Known Galaxies at z ~ 7-9 and a Probable Spectroscopic Confirmation at z = 7.48
Oesch, P. A.; van Dokkum, P.; Bouwens, R. J. +9 more
We identify four unusually bright (H {}160,{AB} < 25.5) galaxies from Hubble Space Telescope (HST) and Spitzer CANDELS data with probable redshifts z ∼ 7-9. These identifications include the brightest-known galaxies to date at z ≳ 7.5. As Y-band observations are not available over the full CANDELS program to perform a standard Lyman-…
AIRUSE-LIFE+: a harmonized PM speciation and source apportionment in five southern European cities
Amato, Fulvio; Alastuey, Andrés; Karanasiou, Angeliki +21 more
The AIRUSE-LIFE+ project aims at characterizing similarities and heterogeneities in particulate matter (PM) sources and contributions in urban areas from southern Europe. Once the main PMx sources are identified, AIRUSE aims at developing and testing the efficiency of specific and non-specific measures to improve urban air quality. This article re…