Search Publications
Dust spectral energy distributions of nearby galaxies: an insight from the Herschel Reference Survey
Ciesla, L.; Buat, V.; Boquien, M. +20 more
Although it accounts only for a small fraction of the baryonic mass, dust has a profound impact on the physical processes at play in galaxies. Thus, to understand the evolution of galaxies, it is essential not only to characterize dust properties per se, but also in relation to global galaxy properties. To do so, we derive the dust properties of g…
Planck intermediate results. XVII. Emission of dust in the diffuse interstellar medium from the far-infrared to microwave frequencies
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +195 more
The dust-Hi correlation is used to characterize the emission properties of dust in the diffuse interstellar medium (ISM) from far infrared wavelengths to microwave frequencies. The field of this investigation encompasses the part of the southern sky best suited to study the cosmic infrared and microwave backgrounds. We cross-correlate sky maps fro…
Disk evolution in the solar neighborhood. I. Disk frequencies from 1 to 100 Myr
Bouy, Hervé; Merín, Bruno; Ribas, Álvaro +1 more
Aims: We study the evolution of circumstellar disks in 22 young (1 to 100 Myr) nearby (within 500 pc) associations over the entire mass spectrum using photometry covering from the optical to the mid-infrared.
Methods: We compiled a catalog of 2340 spectroscopically-confirmed members of these nearby associations. We analyzed their spectra…
Planck 2013 results. XVIII. The gravitational lensing-infrared background correlation
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +224 more
The multi-frequency capability of the Planck satellite provides information both on the integrated history of star formation (via the cosmic infrared background, or CIB) and on the distribution of dark matter (via the lensing effect on the cosmic microwave background, or CMB). The conjunction of these two unique probes allows us to measure directl…
An excess of dusty starbursts related to the Spiderweb galaxy
Altieri, B.; Sanchez-Portal, M.; Valtchanov, I. +16 more
We present APEX LABOCA 870 µm observations of the field around the high-redshift radio galaxy MRC1138-262 at z = 2.16. We detect 16 submillimeter galaxies (SMGs) in this ~140 arcmin2 bolometer map with flux densities in the range 3-11 mJy. The raw number counts indicate a density of SMGs that is up to four times that of blank fiel…
Reconstruction of total and spectral solar irradiance from 1974 to 2013 based on KPVT, SoHO/MDI, and SDO/HMI observations
Solanki, S. K.; Glassmeier, K. H.; Yeo, K. L. +1 more
Context. Total and spectral solar irradiance are key parameters in the assessment of solar influence on changes in the Earth's climate.
Aims: We present a reconstruction of daily solar irradiance obtained using the SATIRE-S model spanning 1974 to 2013 based on full-disc observations from the KPVT, SoHO/MDI, and SDO/HMI.
Methods: SATIRE-S…
Planck 2013 results. XXVI. Background geometry and topology of the Universe
Miville-Deschênes, M. -A.; Bernard, J. -P.; Planck Collaboration +226 more
The new cosmic microwave background (CMB) temperature maps from Planck provide the highest-quality full-sky view of the surface of last scattering available to date. This allows us to detect possible departures from the standard model of a globally homogeneous and isotropic cosmology on the largest scales. We search for correlations induced by a p…
A Herschel [C ii] Galactic plane survey. II. CO-dark H2 in clouds
Goldsmith, P. F.; Langer, W. D.; Pineda, J. L. +2 more
Context. H i and CO large scale surveys of the Milky Way trace the diffuse atomic clouds and the dense shielded regions of molecular hydrogen clouds, respectively. However, until recently, we have not had spectrally resolved C+ surveys in sufficient lines of sight to characterize the ionized and photon dominated components of the inters…
The VLT-FLAMES Tarantula Survey. XVII. Physical and wind properties of massive stars at the top of the main sequence
Crowther, P. A.; Herrero, A.; Simón-Díaz, S. +12 more
The evolution and fate of very massive stars (VMS) is tightly connected to their mass-loss properties. Their initial and final masses differ significantly as a result of mass loss. VMS have strong stellar winds and extremely high ionising fluxes, which are thought to be critical sources of both mechanical and radiative feedback in giant H ii regio…
The evolution of massive stars and their spectra. I. A non-rotating 60 M⊙ star from the zero-age main sequence to the pre-supernova stage
Meynet, Georges; Groh, Jose H.; Ekström, Sylvia +1 more
For the first time, the interior and spectroscopic evolution of a massive star is analyzed from the zero-age main sequence (ZAMS) to the pre-supernova (SN) stage. For this purpose, we combined stellar evolution models using the Geneva code and stellar atmospheric/wind models using CMFGEN. With our approach, we were able to produce observables, suc…