Search Publications
Metallicity evolution, metallicity gradients, and gas fractions at z ~ 3.4
Cimatti, A.; Maiolino, R.; Pentericci, L. +9 more
We used near-infrared integral field spectroscopic observations from the AMAZE and LSD ESO programs to constrain the metallicity in a sample of 40 star-forming galaxies at 3 < z < 5 (most of which are at z ~ 3.4). We measured metallicities by exploiting strong emission-line diagnostics. We found that a significant fraction of star-forming ga…
The evolution of the dust temperatures of galaxies in the SFR-M∗ plane up to z ∼ 2
Berta, S.; Magnelli, B.; Nordon, R. +38 more
We study the evolution of the dust temperature of galaxies in the SFR- M∗ plane up to z ~ 2 using far-infrared and submillimetre observations from the Herschel Space Observatory taken as part of the PACS Evolutionary Probe (PEP) and Herschel Multi-tiered Extragalactic Survey (HerMES) guaranteed time key programmes. Starting from a sampl…
The Wolf-Rayet stars in the Large Magellanic Cloud. A comprehensive analysis of the WN class
Foellmi, C.; Hamann, W. -R.; Oskinova, L. M. +6 more
Context. Massive stars, although being important building blocks of galaxies, are still not fully understood. This especially holds true for Wolf-Rayet (WR) stars with their strong mass loss, whose spectral analysis requires adequate model atmospheres.
Aims: Following our comprehensive studies of the WR stars in the Milky Way, we now present …
Planck 2013 results. IX. HFI spectral response
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +217 more
The Planck High Frequency Instrument (HFI) spectral response was determined through a series of ground based tests conducted with the HFI focal plane in a cryogenic environment prior to launch. The main goal of the spectral transmission tests was to measure the relative spectral response (includingthe level of out-of-band signal rejection) of all …
Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +241 more
The Planck Catalogue of Compact Sources (PCCS) is the catalogue of sources detected in the first 15 months of Planck operations, the “nominal” mission. It consists of nine single-frequency catalogues of compact sources, both Galactic and extragalactic, detected over the entire sky. The PCCS covers the frequency range 30-857 GHz with higher sensiti…
Planck 2013 results. XIII. Galactic CO emission
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +241 more
Rotational transition lines of CO play a major role in molecular radio astronomy as a mass tracer and in particular in the study of star formation and Galactic structure. Although a wealth of data exists for the Galactic plane and some well-known molecular clouds, there is no available high sensitivity all-sky survey of CO emission to date. Such a…
Planck 2013 results. XIX. The integrated Sachs-Wolfe effect
Miville-Deschênes, M. -A.; Bernard, J. -P.; Planck Collaboration +245 more
Based on cosmic microwave background (CMB) maps from the 2013 Planck Mission data release, this paper presents the detection of the integrated Sachs-Wolfe (ISW) effect, that is, the correlation between the CMB and large-scale evolving gravitational potentials. The significance of detection ranges from 2 to 4σ, depending on which method is used. We…
Planck 2013 results. XXI. Power spectrum and high-order statistics of the Planck all-sky Compton parameter map
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +236 more
We have constructed the first all-sky map of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to the 100 to 857 GHz frequency channel maps from the Planck survey. This map shows an obvious galaxy cluster tSZ signal that is well matched with blindly detected clusters in the Planck SZ catal…
Herschel-Planck dust optical-depth and column-density maps. I. Method description and results for Orion
Alves, João; Bouy, Hervé; Lada, Charles J. +1 more
We present high-resolution, high dynamic range column-density and color-temperature maps of the Orion complex using a combination of Planck dust-emission maps, Herschel dust-emission maps, and 2MASS NIR dust-extinction maps. The column-density maps combine the robustness of the 2MASS NIR extinction maps with the resolution and coverage of the Hers…
Properties of z ~ 3-6 Lyman break galaxies. II. Impact of nebular emission at high redshift
Schaerer, D.; Stark, D. P.; de Barros, S.
Context. To gain insight on the mass assembly and place constraints on the star formation history (SFH) of Lyman break galaxies (LBGs), it is important to accurately determine their properties.
Aims: We estimate how nebular emission and different SFHs affect parameter estimation of LBGs.
Methods: We present a homogeneous, detailed analys…