Search Publications
Missions
Journals
Publication Years
Molecular clouds in the Cosmic Snake normal star-forming galaxy 8 billion years ago
Pérez-González, Pablo G.; Richard, Johan; Schaerer, Daniel +12 more
The cold molecular gas in contemporary galaxies is structured in discrete cloud complexes. These giant molecular clouds (GMCs), with 104-107 solar masses (M⊙) and radii of 5-100 parsecs, are the seeds of star formation1. Highlighting the molecular gas structure at such small scales in distant galaxies is…
Rates and Properties of Supernovae Strongly Gravitationally Lensed by Elliptical Galaxies in Time-domain Imaging Surveys
Nugent, Peter E.; Goobar, Ariel; Goldstein, Daniel A.
Supernovae that are strongly gravitationally lensed (gLSNe) by elliptical galaxies are powerful probes of astrophysics and cosmology that will be discovered systematically by wide-field, high-cadence imaging surveys such as the Zwicky Transient Facility (ZTF) and the Large Synoptic Survey Telescope (LSST). Here we use pixel-level simulations that …
The evolution of coronal mass ejections in the inner heliosphere: Implementing the spheromak model with EUHFORIA
Poedts, S.; Verbeke, C.; Pomoell, J.
Aims: We introduce a new model for coronal mass ejections (CMEs) that has been implemented in the magnetohydrodynamics (MHD) inner heliosphere model EUHFORIA. Utilising a linear force-free spheromak (LFFS) solution, the model provides an intrinsic magnetic field structure for the CME. As a result, the new model has the potential to predict th…
From the far-ultraviolet to the far-infrared - galaxy emission at 0 ≤ z ≤ 10 in the SHARK semi-analytic model
Obreschkow, Danail; Driver, Simon P.; Robotham, Aaron S. G. +8 more
We combine the SHARK semi-analytic model of galaxy formation with the PROSPECT software tool for spectral energy distribution (SED) generation to study the multiwavelength emission of galaxies from the far-ultraviolet (FUV) to the far-infrared (FIR) at 0 ≤ z ≤ 10. We produce a physical model for the attenuation of galaxies across cosmic time by co…
Hybrid-kinetic Simulations of Ion Heating in Alfvénic Turbulence
Quataert, Eliot; Chandran, Benjamin D. G.; Kunz, Matthew W. +1 more
We present three-dimensional, hybrid-kinetic numerical simulations of driven Alfvén-wave turbulence of relevance to the collisionless near-Earth solar wind. Special attention is paid to the spectral transition that occurs near the ion-Larmor scale and to the origins of preferential perpendicular ion heating and of nonthermal wings in the parallel …
The GALAH survey and Gaia DR2: Linking ridges, arches, and vertical waves in the kinematics of the Milky Way
Lewis, Geraint F.; Ting, Yuan-Sen; Buder, Sven +17 more
Gaia DR2 has revealed new small-scale and large-scale patterns in the phase-space distribution of stars in the Milky Way. In cylindrical Galactic coordinates (R,φ ,z), ridge-like structures can be seen in the (R,V_φ) plane and asymmetric arch-like structures in the (V_R,V_φ) plane. We show that the ridges are also clearly present when the third di…
The Nearby, Young, Argus Association: Membership, Age, and Dusty Debris Disks
Zuckerman, B.
The reality of a field Argus Association has been doubted in some papers in the literature. We apply Gaia DR2 data to stars previously suggested to be Argus members and conclude that a true association exists with age 40-50 Myr and containing many stars within 100 pc of Earth; β Leo and 49 Cet are two especially interesting members. Based on youth…
Drifting of the line-tied footpoints of CME flux-ropes
Aulanier, Guillaume; Dudík, Jaroslav
Context. Bridging the gap between heliospheric and solar observations of eruptions requires the mapping of interplanetary coronal mass ejection (CME) footpoints down to the Sun's surface. But this not straightforward. Improving the understanding of the spatio-temporal evolutions of eruptive flares requires a comprehensive standard model. But the c…
VLT/SPHERE exploration of the young multiplanetary system PDS70
Rouan, D.; Pinte, C.; Henning, T. +51 more
Context. PDS 70 is a young (5.4 Myr), nearby ( 113 pc) star hosting a known transition disk with a large gap. Recent observations with SPHERE and NACO in the near-infrared (NIR) allowed us to detect a planetary mass companion, PDS 70 b, within the disk cavity. Moreover, observations in Hα with MagAO and MUSE revealed emission associated…
Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M-dwarf System at 6.9 pc
Barclay, Thomas; Latham, David W.; Berlind, Perry +40 more
We present the discovery from Transiting Exoplanet Survey Satellite (TESS) data of LTT 1445Ab. At a distance of 6.9 pc, it is the second nearest transiting exoplanet system found to date, and the closest one known for which the primary is an M dwarf. The host stellar system consists of three mid-to-late M dwarfs in a hierarchical configuration, wh…