Search Publications
An ALMA study of hub-filament systems - I. On the clump mass concentration within the most massive cores
Peretto, Nicolas; Ragan, Sarah E.; Traficante, Alessio +7 more
The physical processes behind the transfer of mass from parsec-scale clumps to massive star-forming cores remain elusive. We investigate the relation between the clump morphology and the mass fraction that ends up in its most massive core (MMC) as a function of infrared brightness, i.e. a clump evolutionary tracer. Using Atacama Large Millimeter/s…
MOVES - IV. Modelling the influence of stellar XUV-flux, cosmic rays, and stellar energetic particles on the atmospheric composition of the hot Jupiter HD 189733b
Vidotto, A. A.; Bourrier, V.; Fares, R. +7 more
Hot Jupiters provide valuable natural laboratories for studying potential contributions of high-energy radiation to pre-biotic synthesis in the atmospheres of exoplanets. In this fourth paper of the Multiwavelength Observations of an eVaporating Exoplanet and its Star (MOVES) programme, we study the effect of different types of high-energy radiati…
Dense molecular gas properties on 100 pc scales across the disc of NGC 3627
Chevance, M.; Meidt, S. E.; Schinnerer, E. +29 more
It is still poorly constrained how the densest phase of the interstellar medium varies across galactic environment. A large observing time is required to recover significant emission from dense molecular gas at high spatial resolution, and to cover a large dynamic range of extragalactic disc environments. We present new NOrthern Extended Millimete…
Discovery of a possible splashback feature in the intracluster light of MACS J1149.5+2223
Donahue, Megan; Zabludoff, Ann I.; Connor, Thomas +5 more
We present an analysis of the intracluster light (ICL) in the Frontier Field Cluster MACS J1149.5+2223 (z = 0.544), which combines new and archival Hubble WFC3/IR imaging to provide continuous radial coverage out to 2.8 Mpc from the brightest cluster galaxy (BCG). Employing careful treatment of potential systematic biases and using data at the lar…
Direct imaging of sub-Jupiter mass exoplanets with James Webb Space Telescope coronagraphy
Carter, Aarynn L.; Hinkley, Sasha; Pueyo, Laurent +7 more
The James Webb Space Telescope (JWST), currently scheduled to launch in 2021, will dramatically advance our understanding of exoplanetary systems with its ability to directly image and characterize planetary-mass companions at wide separations through coronagraphy. Using state-of-the-art simulations of JWST performance, in combination with the lat…
A ∼75 per cent occurrence rate of debris discs around F stars in the β Pic moving group
Pawellek, Nicole; Matrà, Luca; Kennedy, Grant +2 more
Only 20 per cent of old field stars have detectable debris discs, leaving open the question of what disc, if any, is present around the remaining 80 per cent. Young moving groups allow to probe this population, since discs are expected to have been brighter early on. This paper considers the population of F stars in the 23 Myr-old β Pictoris movin…
Modelling long-period variables - II. Fundamental mode pulsation in the non-linear regime
Girardi, Léo; Marigo, Paola; Lebzelter, Thomas +4 more
Long-period variability in luminous red giants has several promising applications, all of which require models able to accurately predict pulsation periods. Linear pulsation models have proven successful in reproducing the observed periods of overtone modes in evolved red giants, but they fail to accurately predict their fundamental mode (FM) peri…
Resolving a dusty, star-forming SHiZELS galaxy at z = 2.2 with HST, ALMA, and SINFONI on kiloparsec scales
Smail, I.; Ibar, E.; Swinbank, A. M. +6 more
We present ∼0.15 arcsec spatial resolution imaging of SHiZELS-14, a massive ( $M_{*}\sim 10^{11}\, \rm {M_{\odot }}$ ), dusty, star-forming galaxy at z = 2.24. Our rest-frame ${\sim}1\, \rm {kpc}$ -scale, matched-resolution data comprise four different widely used tracers of star formation: the $\rm {H}\,\alpha$ emission line (from SINFONI/VLT), r…
Combined analysis of neutron star natal kicks using proper motions and parallax measurements for radio pulsars and Be X-ray binaries
Igoshev, Andrei P.; Toonen, Silvia; Chruslinska, Martyna +1 more
Supernova explosion and the associated neutron star (NS) natal kicks are important events on a pathway of a binary to become a gravitational wave source, an X-ray binary, or a millisecond radio pulsar. Weak natal kicks often lead to binary survival, while strong kicks frequently disrupt the binary. In this article, we aim to further constrain NS n…
The LBT satellites of Nearby Galaxies Survey (LBT-SONG): the satellite population of NGC 628
Pogge, Richard W.; Kochanek, Christopher S.; Sand, David J. +9 more
We present the first satellite system of the Large Binocular Telescope Satellites Of Nearby Galaxies Survey (LBT-SONG), a survey to characterize the close satellite populations of Large Magellanic Cloud to Milky-Way-mass, star-forming galaxies in the Local Volume. In this paper, we describe our unresolved diffuse satellite finding and completeness…