Search Publications
The Herschel Virgo Cluster Survey. XX. Dust and gas in the foreground Galactic cirrus
Boquien, M.; Bianchi, S.; Fritz, J. +22 more
We study the correlation between far-infrared/submm dust emission and atomic gas column density in order to derive the properties of the high Galactic latitude, low density, Milky Way cirrus in the foreground of the Virgo cluster of galaxies. Dust emission maps from 60 to 850 µm are obtained from observations with the Spectral and Photometri…
Testing predictions of the quantum landscape multiverse 2: the exponential inflationary potential
Di Valentino, Eleonora; Mersini-Houghton, Laura
The 2015 Planck data release tightened the region of the allowed inflationary models. Inflationary models with convex potentials have now been ruled out since they produce a large tensor to scalar ratio. Meanwhile the same data offers interesting hints on possible deviations from the standard picture of CMB perturbations. Here we revisit the predi…
On the Link between the Release of Solar Energetic Particles Measured at Widespread Heliolongitudes and the Properties of the Associated Coronal Shocks
Lario, D.; Kwon, R. -Y.; Riley, P. +1 more
Under the paradigm that the main agents in the acceleration of solar energetic particles (SEPs) are shocks initially driven by coronal mass ejections, we analyze whether the properties of the shocks in the corona inferred from combining extreme-ultraviolet (EUV) and white-light (WL) observations from multiple vantage points together with magnetohy…
Ion composition at comet 67P near perihelion: Rosetta observations and model-based interpretation
Altwegg, K.; Balsiger, H.; Fuselier, S. A. +22 more
We present the ion composition in the coma of comet 67P with newly detected ion species over the 28-37 u mass range, probed by Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA)/Double Focusing Mass Spectrometer (DFMS). In summer 2015, the nucleus reached its highest outgassing rate and ion-neutral reactions started to take place a…
Distribution functions for resonantly trapped orbits in the Galactic disc
Binney, James; Famaey, Benoit; Monari, Giacomo +1 more
The present-day response of a Galactic disc stellar population to a non-axisymmetric perturbation of the potential has previously been computed through perturbation theory within the phase-space coordinates of the unperturbed axisymmetric system. Such an Eulerian linearized treatment, however, leads to singularities at resonances, which prevent qu…
An automatic approach to exclude interlopers from asteroid families
Radović, Viktor; Novaković, Bojan; Carruba, Valerio +1 more
Asteroid families are a valuable source of information to many asteroid-related researches, assuming a reliable list of their members could be obtained. However, as the number of known asteroids increases fast it becomes more and more difficult to obtain a robust list of members of an asteroid family. Here, we are proposing a new approach to deal …
Next non-Gaussianity frontier: What can a measurement with σ (fNL)≲1 tell us about multifield inflation?
Doré, Olivier; de Putter, Roland; Gleyzes, Jérôme
Future galaxy surveys promise to probe local primordial non-Gaussianity at unprecedented precision, σ (fNL)≲1 . We study the implications for multifield inflation by considering spectator models, where inflation is driven by the inflaton field, but the primordial perturbations are (partially) generated by a second, spectator field. We p…
(Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies. III. Environments
Finoguenov, A.; Ilbert, O.; Smolčić, V. +20 more
We investigate the environment of 23 submillimetre galaxies (SMGs) drawn from a signal-to-noise (S/N)-limited sample of SMGs originally discovered in the James Clerk Maxwell Telescope (JCMT)/AzTEC 1.1 mm continuum survey of a Cosmic Evolution Survey (COSMOS) subfield and then followed up with the Submillimetre Array and Plateau de Bure Interferome…
The Ages of Passive Galaxies in a z = 1.62 Protocluster
Papovich, Casey; Tran, Kim-Vy H.; Willmer, Christopher N. A. +9 more
We present a study of the relation between galaxy stellar age and mass for 14 members of the z = 1.62 protocluster IRC 0218, using multiband imaging and HST G102 and G141 grism spectroscopy. Using UVJ colors to separate galaxies into star-forming and quiescent populations, we find that, at stellar masses {M}* ≥slant {10}10.85…
Precise strong lensing mass profile of the CLASH galaxy cluster MACS 2129
Zitrin, A.; Grillo, C.; Balestra, I. +12 more
We present a detailed strong lensing (SL) mass reconstruction of the core of the galaxy cluster MACS J2129.4-0741 (zcl = 0.589) obtained by combining high-resolution Hubble Space Telescope photometry from the CLASH (Cluster Lensing And Supernovae survey with Hubble) survey with new spectroscopic observations from the CLASH-VLT (Very Lar…