Search Publications
Determination of fundamental asteroseismic parameters using the Hilbert transform
Roth, Markus; Schad, Ariane; Kiefer, René +1 more
Context. Solar-like oscillations exhibit a regular pattern of frequencies. This pattern is dominated by the small and large frequency separations between modes. The accurate determination of these parameters is of great interest, because they give information about e.g. the evolutionary state and the mass of a star.
Aims: We want to develop a…
Revealing the cold dust in low-metallicity environments (Corrigendum). I. Photometry analysis of the Dwarf Galaxy Survey with Herschel
Ciesla, L.; Boquien, M.; Roussel, H. +21 more
Water in star-forming regions with Herschel (WISH) (Corrigendum). V. The physical conditions in low-mass protostellar outflows revealed by multi-transition water observations
Liseau, R.; van Dishoeck, E. F.; Bergin, E. A. +17 more
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Herschel-HIFI observations of H2O, NH3, and N2H+ toward high-mass starless and protostellar clumps identified by the Hi-GAL survey⋆
Codella, C.; Persson, C. M.; Olmi, L.
Context. Our present understanding of high-mass star formation still remains very schematic. In particular, it is not yet clear how much of the difference between low-mass and high-mass star formation occurs during the earliest star formation phases.
Aims: The chemical characteristics of massive cold clumps, and the comparison with those of t…
Comet C/2013 A1 (Siding Spring) as seen with the Herschel Space Observatory
Marton, G.; Müller, T. G.; Kidger, M. +2 more
The thermal emission of comet C/2013 A1 (Siding Spring) was observed on March 31, 2013, at a heliocentric distance of 6.48 au using the PACS photometer camera of the Herschel Space Observatory. The comet was clearly active, showing a coma that could be traced to a distance of ~10'', i.e. ~50 000 km. Analysis of the radial intensity profiles of the…
Rosetta mission results pre-perihelion
Alves, J.; Forveille, T.; Guillot, T. +2 more
On the origin of two unidentified radio/X-ray sources discovered with XMM-Newton
García, Federico; Combi, Jorge A.; Romero, Gustavo E. +1 more
Aims: We aim at clarifying the nature of the emission of two spatially related unidentified X-ray sources detected with XMM-Newton telescope at intermediate-low Galactic latitude
Methods: We use the imaging and spectral capabilities of XMM-Newton to study the X-ray properties of these two sources. In addition, we complement our study wit…
Planck 2013 results. XVI. Cosmological parameters
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +262 more
This paper presents the first cosmological results based on Planck measurements of the cosmic microwave background (CMB) temperature and lensing-potential power spectra. We find that the Planck spectra at high multipoles (ℓ ≳ 40) are extremely well described by the standard spatially-flat six-parameter ΛCDM cosmology with a power-law spectrum of a…
Planck 2013 results. XXII. Constraints on inflation
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +241 more
We analyse the implications of the Planck data for cosmic inflation. The Planck nominal mission temperature anisotropy measurements, combined with the WMAP large-angle polarization, constrain the scalar spectral index to be ns = 0.9603 ± 0.0073, ruling out exact scale invariance at over 5σ.Planck establishes an upper bound on the tensor…
Planck 2013 results. I. Overview of products and scientific results
Böhringer, H.; Kneissl, R.; Dahle, H. +398 more
The European Space Agency's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 and has been scanning the microwave and submillimetre sky continuously since 12 August 2009. In March 2013, ESA and the Planck Collaboration released the initial cosmology products based on the first 15.5 mo…