Search Publications
Missions
Journals
Publication Years
VINTERGATAN-GM: The cosmological imprints of early mergers on Milky-Way-mass galaxies
Feuillet, Diane K.; Martin, Nicolas F.; Pontzen, Andrew +6 more
We present a new suite of cosmological zoom-in hydrodynamical ($\approx 20\, \mathrm{pc}$ spatial resolution) simulations of Milky-Way mass galaxies to study how a varying mass ratio for a Gaia-Sausage-Enceladus (GSE) progenitor impacts the z = 0 chemodynamics of halo stars. Using the genetic modification approach, we create five cosmological hist…
JWST: Deuterated PAHs, PAH Nitriles, and PAH Overtone and Combination Bands. I. Program Description and First Look
Boersma, C.; Bregman, J. D.; Allamandola, L. J. +6 more
A first look is taken at the NIRSpec 1-5 µm observations from James Webb Space Telescope program 1591 that targets seven objects along the low-mass stellar life cycle with polycyclic aromatic hydrocarbon (PAH) emission. Spectra extracted from a 1.″5 radius circular aperture are explored, showing a wealth of features, including the 3 µm…
Peering into the young planetary system AB Pic. Atmosphere, orbit, obliquity, and second planetary candidate
Ginski, C.; Homeier, D.; Zhang, Y. +24 more
Aims: We aim to revisit the formation pathway of AB Pic b, an imaged companion that straddles the exoplanet/brown-dwarf boundary. We based this study on a rich set of observations, which allows us to investigate its orbital and atmospheric properties.
Methods: We composed a spectrum of AB Pic b by merging archival medium-resolution (~400…
CEERS: MIRI deciphers the spatial distribution of dust-obscured star formation in galaxies at 0.1 < z < 2.5
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +23 more
Aims: We study the stellar (i.e., rest-optical) and dust-obscured star-forming (i.e., rest-mid-infrared) morphologies (i.e., sizes and Sérsic indices) of star-forming galaxies (SFGs) at 0.1 < z < 2.5.
Methods: We combined Hubble Space Telescope (HST) images from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CA…
The Planck clusters in the LOFAR sky. VI. LoTSS-DR2: Properties of radio relics
Simionescu, A.; Zhang, X.; Di Gennaro, G. +19 more
Context. It is well established that shock waves in the intracluster medium launched by galaxy cluster mergers can produce synchrotron emission, which is visible to us at radio frequencies as radio relics. However, the particle acceleration mechanism producing these relics is still not fully understood. It is also unclear how relics relate to radi…
TDCOSMO. X. Automated modeling of nine strongly lensed quasars and comparison between lens-modeling software
Treu, T.; Sluse, D.; Suyu, S. H. +5 more
When strong gravitational lenses are to be used as an astrophysical or cosmological probe, models of their mass distributions are often needed. We present a new, time-efficient automation code for the uniform modeling of strongly lensed quasars with GLEE, a lens-modeling software for multiband data. By using the observed positions of the lensed qu…
A partially stripped massive star in a Be binary at low metallicity. A missing link towards Be X-ray binaries and double neutron star mergers
Hamann, W. -R.; Oskinova, L. M.; Sander, A. A. C. +4 more
Standard binary evolutionary models predict a significant population of core helium-burning stars that lost their hydrogen-rich envelope after mass transfer via Roche-lobe overflow. However, there is a scarcity of observations of such stripped stars in the intermediate-mass regime (∼1.5 − 8 M⊙), which are thought to be prominent progeni…
CLEAR: High-ionization [Ne V] λ3426 Emission-line Galaxies at 1.4 < z < 2.3
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +13 more
We analyze a sample of 25 [Ne V] (λ3426) emission-line galaxies at 1.4 < z < 2.3 using Hubble Space Telescope/Wide Field Camera 3 G102 and G141 grism observations from the CANDELS Lyα Emission at Reionization (CLEAR) survey. [Ne V] emission probes extremely energetic photoionization (creation potential of 97.11 eV) and is often attributed to…
An ever-present Gaia snail shell triggered by a dark matter wake
Grand, Robert J. J.; Gómez, Facundo A.; van de Voort, Freeke +5 more
We utilize a novel numerical technique to model star formation in cosmological simulations of galaxy formation - called SUPERSTARS - to simulate a Milky Way-like galaxy with ≳108 star particles to study the formation and evolution of out-of-equilibrium stellar disc structures in a full cosmological setting. In the plane defined by the c…
Comparative analysis of atmospheric parameters from high-resolution spectroscopic sky surveys: APOGEE, GALAH, Gaia-ESO
Jofré, Paula; Stringfellow, Guy S.; Mészáros, Szabolcs +5 more
Context. SDSS-IV APOGEE-2, GALAH, and Gaia-ESO are high-resolution, ground-based, multi-object spectroscopic surveys providing fundamental stellar atmospheric parameters and multiple elemental abundance ratios for hundreds of thousands of stars of the Milky Way. Data from these and other surveys contribute to investigations of the history and evol…