Search Publications
Uncovering the stellar structure of the dusty star-forming galaxy GN20 at z = 4.055 with MIRI/JWST
Ilbert, O.; Nørgaard-Nielsen, H. U.; Östlin, G. +35 more
Luminous infrared galaxies at high redshifts (z > 4) include extreme starbursts that build their stellar mass over short periods of time, that is, of 100 Myr or less. These galaxies are considered to be the progenitors of massive quiescent galaxies at intermediate redshifts (z ∼ 2) but their stellar structure and buildup is unknown. Here, we pr…
2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
Monnier, John D.; Anugu, Narsireddy; Kraus, Stefan +77 more
Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gathering power of four 8 m telescopes through a complex photonic interferometer. Fully integrated astrophotonic …
TOI-3235 b: A Transiting Giant Planet around an M4 Dwarf Star
Vanderburg, Andrew; Latham, David W.; Jordán, Andrés +34 more
We present the discovery of TOI-3235 b, a short-period Jupiter orbiting an M dwarf with a stellar mass close to the critical mass at which stars transition from partially to fully convective. TOI-3235 b was first identified as a candidate from TESS photometry and confirmed with radial velocities from ESPRESSO and ground-based photometry from HATSo…
The Role of High-frequency Transverse Oscillations in Coronal Heating
Van Doorsselaere, Tom; Lim, Daye; Berghmans, David +3 more
Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager on board Solar Orbiter. We perform a meta-analysis by considering the oscillation parameters re…
A Two-Martian Years Survey of the Water Vapor Saturation State on Mars Based on ACS NIR/TGO Occultations
Montmessin, Franck; Trokhimovskiy, Alexander; Alday, Juan +9 more
On Mars, condensation is the major factor constraining the vertical distribution of water vapor. Recent measurements of water and temperature profiles showed that water can be strongly supersaturated at and above the level where clouds form during the aphelion and perihelion seasons. Since 2018, the near-infrared spectrometer (NIR) of the Atmosphe…
Gaia Data Release 3. Exploring and mapping the diffuse interstellar band at 862 nm
Prusti, T.; Mazeh, T.; Zucker, S. +444 more
Context. Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. DIBs play an important role in the life cycle of the interstellar medium (ISM) and can also be used to trace Galactic structure.
Aims: Here, we demonstrate the capacity of the Gaia-Radial Veloc…
Magnetic Field Spectral Evolution in the Inner Heliosphere
Fedorov, A.; Horbury, T. S.; Louarn, P. +24 more
Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between 0.06 ≲ R ≲ 1 au. The spectrum is studied as a function of scale, normalized to the ion inertial scale d i . In the vicinity of the Sun, the inertial range is limited to a narrow range of scales and exhibits a power-law …
PHANGS-JWST First Results: Stellar-feedback-driven Excitation and Dissociation of Molecular Gas in the Starburst Ring of NGC 1365?
Bolatto, Alberto D.; Henshaw, Jonathan D.; Kruijssen, J. M. Diederik +36 more
We compare embedded young massive star clusters (YMCs) to (sub-)millimeter line observations tracing the excitation and dissociation of molecular gas in the starburst ring of NGC 1365. This galaxy hosts one of the strongest nuclear starbursts and richest populations of YMCs within 20 Mpc. Here we combine near-/mid-IR PHANGS-JWST imaging with new A…
The Bimodal Absorption System Imaging Campaign (BASIC). I. A Dual Population of Low-metallicity Absorbers at z < 1
Johnson, Sean D.; Tripp, Todd M.; Prochaska, J. Xavier +17 more
The bimodal absorption system imaging campaign (BASIC) aims to characterize the galaxy environments of a sample of 36 H I-selected partial Lyman limit systems (pLLSs) and Lyman limit systems (LLSs) in 23 QSO fields at z ≲ 1. These pLLSs/LLSs provide a unique sample of absorbers with unbiased and well-constrained metallicities, allowing us to explo…
Axion dark matter from lepton flavor-violating decays
Panci, Paolo; Redigolo, Diego; Schwetz, Thomas +1 more
We propose simple scenarios where lepton flavor-violating couplings generate the observed dark matter abundance through freeze-in of an axion-like particle with mass in the few keV range. Compared to flavor-diagonal freeze-in, this mechanism enhances dark matter stability, softens stellar cooling constraints and improves the experimental sensitivi…