Search Publications
Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxies
Bianchi, S.; Fritz, J.; Madden, S. C. +18 more
Aims: The purpose of this work is the characterization of the radial distribution of dust, stars, gas, and star-formation rate (SFR) in a sub-sample of 18 face-on spiral galaxies extracted from the DustPedia sample.
Methods: This study is performed by exploiting the multi-wavelength DustPedia database, from ultraviolet (UV) to sub-millim…
Interacting neutrinos in cosmology: exact description and constraints
Tram, Thomas; Wong, Yvonne Y. Y.; Oldengott, Isabel M. +1 more
We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations. Implementing the exact Boltzmann hierarchy for interacting neutrinos first derived in [1] into the Boltzmann solver CLASS, we perform a detailed numerical analysis of the effects of the interaction on the cosmic microw…
The VMC survey - XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids
Piatti, Andrés E.; de Grijs, Richard; Marconi, Marcella +13 more
The VISTA near-infrared YJKs survey of the Magellanic System (VMC) is collecting deep Ks-band time-series photometry of pulsating stars hosted by the two Magellanic Clouds and their connecting bridge. Here, we present Y, J, Ks light curves for a sample of 717 Small Magellanic Cloud (SMC) Classical Cepheids (CCs). T…
An ALMA Survey of CO Isotopologue Emission from Protoplanetary Disks in Chamaeleon I
Pascucci, Ilaria; Herczeg, Gregory J.; Henning, Thomas +8 more
The mass of a protoplanetary disk limits the formation and future growth of any planet. Masses of protoplanetary disks are usually calculated from measurements of the dust continuum emission by assuming an interstellar gas-to-dust ratio. To investigate the utility of CO as an alternate probe of disk mass, we use ALMA to survey 13CO and …
Constraints on interacting dark energy models from Planck 2015 and redshift-space distortion data
Costa, André A.; Abdalla, E.; Wang, Bin +1 more
We investigate phenomenological interactions between dark matter and dark energy and constrain these models by employing the most recent cosmological data including the cosmic microwave background radiation anisotropies from Planck 2015, Type Ia supernovae, baryon acoustic oscillations, the Hubble constant and redshift-space distortions. We find t…
The search for failed supernovae with the Large Binocular Telescope: constraints from 7 yr of data
Kochanek, C. S.; Stanek, K. Z.; Adams, S. M. +1 more
We report updated results for the first 7 yr of our programme to monitor 27 galaxies within 10 Mpc using the Large Binocular Telescope to search for failed supernovae (SNe) - core collapses of massive stars that form black holes without luminous SNe. In the new data, we identify no new compelling candidates and confirm the existing candidate. Give…
Athena: ESA's X-ray observatory for the late 2020s
Piro, L.; Nandra, K.; Barcons, X. +8 more
Observations of the X-ray sky after the next decade will most likely be dominated by Athena (Advanced Telescope for High ENergy Astrophysics), the second large mission of ESA's Cosmic Vision 2015-2035 programme. Athena has been conceived to address the "Hot and Energetic Universe" science theme, which focuses on the assembly and evolution of hot b…
Radial metal abundance profiles in the intra-cluster medium of cool-core galaxy clusters, groups, and ellipticals
Zhang, Y. -Y.; Simionescu, A.; Kaastra, J. S. +10 more
The hot intra-cluster medium (ICM) permeating galaxy clusters and groups is not pristine, as it has been continuously enriched by metals synthesised in Type Ia (SNIa) and core-collapse (SNcc) supernovae since the major epoch of star formation (z ≃ 2-3). The cluster/group enrichment history and mechanisms responsible for releasing and mixing the me…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the Fourier space wedges of the final sample
Streblyanska, Alina; Brownstein, Joel R.; Eisenstein, Daniel J. +25 more
We extract cosmological information from the anisotropic power-spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the concept of clustering wedges to Fourier space. Making use of new fast-Fourier-transform-based estimators, we measure the power-spectrum clustering wedges of the BOSS sample b…
A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission
Genzel, R.; Hailey, C.; Harrison, F. +21 more
We present the first fully simultaneous fits to the near-infrared (NIR) and X-ray spectral slope (and its evolution) during a very bright flare from Sgr A*, the supermassive black hole at the Milky Way's centre. Our study arises from ambitious multiwavelength monitoring campaigns with XMM-Newton, NuSTAR and SINFONI. The average multiwavelength spe…