Search Publications
Missions
Journals
Publication Years
The Interaction of Venus-like, M-dwarf Planets with the Stellar Wind of Their Host Star
Gombosi, T. I.; Drake, J. J.; Glocer, A. +4 more
We study the interaction between the atmospheres of Venus-like, non-magnetized exoplanets orbiting an M-dwarf star, and the stellar wind using a multi-species MHD model. We focus our investigation on the effect of enhanced stellar wind and enhanced EUV flux as the planetary distance from the star decreases. Our simulations reveal different topolog…
On the importance of using appropriate spectral models to derive physical properties of galaxies at 0.7 < z < 2.8
Charlot, Stéphane; Maseda, Michael V.; van Dokkum, Pieter G. +14 more
Interpreting observations of distant galaxies in terms of constraints on physical parameters - such as stellar mass (M★), star formation rate (SFR) and dust optical depth ({hat{τ}V}) - requires spectral synthesis modelling. We analyse the reliability of these physical parameters as determined under commonly adopted `classical…
The changing rotation period of comet 67P/Churyumov-Gerasimenko controlled by its activity
Jorda, L.; Keller, H. U.; Mottola, S. +1 more
Context. The ESA Rosetta spacecraft has been orbiting the nucleus of comet 67P/Churyumov-Gerasimenko since August 2014. The rotation axis of the irregularly shaped nucleus has a large obliquity (52°) and is oriented such that the southern hemisphere is insolated during perihelion.
Aims: We calculate the change in the rotation period as a func…
A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. IV. A Multiwavelength, Non-LTE Spectroscopic Analysis
Corcoran, M. F.; Hamann, W. -R.; Nazé, Y. +13 more
Eclipsing systems of massive stars allow one to explore the properties of their components in great detail. We perform a multi-wavelength, non-LTE analysis of the three components of the massive multiple system δ Ori A, focusing on the fundamental stellar properties, stellar winds, and X-ray characteristics of the system. The primary’s distance-in…
Planck intermediate results. XXVIII. Interstellar gas and dust in the Chamaeleon clouds as seen by Fermi LAT and Planck
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +198 more
The nearby Chamaeleon clouds have been observed in γ rays by the Fermi Large Area Telescope (LAT) and in thermal dust emission by Planck and IRAS. Cosmic rays and large dust grains, if smoothly mixed with gas, can jointly serve with the H i and 12CO radio data to (i) map the hydrogen column densities, NH, in the different gas…
Variability of the Martian thermosphere during eight Martian years as simulated by a ground-to-exosphere global circulation model
Forget, F.; López-Valverde, M. A.; García-Comas, M. +3 more
Using a ground-to-exosphere general circulation model for Mars we have simulated the variability of the dayside temperatures at the exobase during eight Martian years (MY, from MY24 to MY31, approximately from 1998 to 2013), taking into account the observed day-to-day solar and dust load variability. We show that the simulated temperatures are in …
Inflation after false vacuum decay: Observational prospects after Planck
Bousso, Raphael; Harlow, Daniel; Senatore, Leonardo
We assess two potential signals of the formation of our universe by the decay of a false vacuum. Negative spatial curvature is one possibility, but the window for its detection is now small. However, another possible signal is a suppression of the cosmic microwave background (CMB) power spectrum at large angles. This arises from the steepening of …
The Optically Unbiased GRB Host (TOUGH) Survey. VII. The Host Galaxy Luminosity Function: Probing the Relationship between GRBs and Star Formation to Redshift ∼ 6
Milvang-Jensen, B.; Fynbo, J. P. U.; Krühler, T. +12 more
Gamma-ray bursts (GRBs) offer a route to characterizing star-forming galaxies and quantifying high-z star formation that is distinct from the approach of traditional galaxy surveys: GRB selection is independent of dust and probes even the faintest galaxies which can evade detection in flux-limited surveys. However, the exact relation between the G…
Cloud Structure of the Nearest Brown Dwarfs: Spectroscopic Variability of Luhman 16AB from the Hubble Space Telescope
Apai, Dániel; Marley, Mark S.; Bedin, Luigi R. +5 more
The binary brown dwarf WISE J104915.57-531906.1 (also Luhman 16AB), composed of a late-L and early-T dwarf, is a prototypical L/T transition flux reversal binary located at a distance of only 2 pc. Luhman 16B is a known variable whose light curves evolve rapidly. We present a spatially resolved spectroscopic time-series of Luhman 16A and B coverin…
Far-ultraviolet morphology of star-forming filaments in cool core brightest cluster galaxies
Fabian, A. C.; Li, Y.; Combes, F. +17 more
We present a multiwavelength morphological analysis of star-forming clouds and filaments in the central (≲50 kpc) regions of 16 low-redshift (z < 0.3) cool core brightest cluster galaxies. New Hubble Space Telescope imaging of far-ultraviolet continuum emission from young (≲10 Myr), massive (≳5 M⊙) stars reveals filamentary and clump…