Search Publications
Planck 2018 results. VI. Cosmological parameters
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +179 more
We present cosmological parameter results from the final full-mission Planck measurements of the cosmic microwave background (CMB) anisotropies, combining information from the temperature and polarization maps and the lensing reconstruction. Compared to the 2015 results, improved measurements of large-scale polarization allow the reionization opti…
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +192 more
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857 GHz.…
The Solar Orbiter mission. Science overview
Williams, D.; Livi, S.; Peter, H. +32 more
Aims: Solar Orbiter, the first mission of ESA's Cosmic Vision 2015-2025 programme and a mission of international collaboration between ESA and NASA, will explore the Sun and heliosphere from close up and out of the ecliptic plane. It was launched on 10 February 2020 04:03 UTC from Cape Canaveral and aims to address key questions of solar and …
Painting a portrait of the Galactic disc with its stellar clusters
Castro-Ginard, A.; Jordi, C.; Casamiquela, L. +10 more
Context. The large astrometric and photometric survey performed by the Gaia mission allows for a panoptic view of the Galactic disc and its stellar cluster population. Hundreds of stellar clusters were only discovered after the latest Gaia data release (DR2) and have yet to be characterised.
Aims: Here we make use of the deep and homogeneous …
TDCOSMO. IV. Hierarchical time-delay cosmography - joint inference of the Hubble constant and galaxy density profiles
Treu, T.; Christensen, L.; Koopmans, L. V. E. +24 more
The H0LiCOW collaboration inferred via strong gravitational lensing time delays a Hubble constant value of H0 = 73.3-1.8+1.7 km s-1 Mpc-1, describing deflector mass density profiles by either a power-law or stars (constant mass-to-light ratio) plus standard dark matter halos. The mass-sheet tr…
The third realization of the International Celestial Reference Frame by very long baseline interferometry
Charlot, P.; Lambert, S.; Bourda, G. +17 more
A new realization of the International Celestial Reference Frame (ICRF) is presented based on the work achieved by a working group of the International Astronomical Union (IAU) mandated for this purpose. This new realization follows the initial realization of the ICRF completed in 1997 and its successor, ICRF2, adopted as a replacement in 2009. Th…
The XMM-Newton serendipitous survey. IX. The fourth XMM-Newton serendipitous source catalogue
Motch, C.; Page, M. J.; Ballet, J. +28 more
Context. Sky surveys produce enormous quantities of data on extensive regions of the sky. The easiest way to access this information is through catalogues of standardised data products. XMM-Newton has been surveying the sky in the X-ray, ultra-violet, and optical bands for 20 years.
Aims: The XMM-Newton Survey Science Centre has been producin…
The Solar Orbiter EUI instrument: The Extreme Ultraviolet Imager
Vial, J. -C.; Zhang, X.; Peter, H. +146 more
Context. The Extreme Ultraviolet Imager (EUI) is part of the remote sensing instrument package of the ESA/NASA Solar Orbiter mission that will explore the inner heliosphere and observe the Sun from vantage points close to the Sun and out of the ecliptic. Solar Orbiter will advance the "connection science" between solar activity and the heliosphere…
Universal bolometric corrections for active galactic nuclei over seven luminosity decades
Maiolino, R.; Fiore, F.; Bianchi, S. +12 more
Context. The AGN bolometric correction is a key element for understanding black hole (BH) demographics and computing accurate BH accretion histories from AGN luminosities. However, current estimates still differ from each other by up to a factor of two to three, and rely on extrapolations at the lowest and highest luminosities.
Aims: Here we …
Clusters and mirages: cataloguing stellar aggregates in the Milky Way
Anders, F.; Cantat-Gaudin, T.
Context. Many of the open clusters listed in modern catalogues were initially reported by visual astronomers as apparent overdensities of bright stars. As observational techniques and analysis methods continue to improve, some of them have been shown to be chance alignments of stars and not true clusters. Recent publications making use of Gaia DR2…