Search Publications
Spatially resolved star formation and inside-out quenching in the TNG50 simulation and 3D-HST observations
Mowla, Lamiya; van Dokkum, Pieter; Johnson, Benjamin D. +22 more
We compare the star-forming main sequence (SFMS) of galaxies - both integrated and resolved on 1 kpc scales - between the high-resolution TNG50 simulation of IllustrisTNG and observations from the 3D-HST slitless spectroscopic survey at z ~ 1. Contrasting integrated star formation rates (SFRs), we find that the slope and normalization of the star-…
A nearby galaxy perspective on dust evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples
De Looze, Ilse; Baes, Maarten; Fritz, Jacopo +13 more
Context. The efficiency of the different processes responsible for the evolution of interstellar dust on the scale of a galaxy are, to date, very uncertain, spanning several orders of magnitude in the literature. Yet, precise knowledge of the grain properties is key to addressing numerous open questions about the physics of the interstellar medium…
Oxia Planum: The Landing Site for the ExoMars "Rosalind Franklin" Rover Mission: Geological Context and Prelanding Interpretation
Pan, Lu; Quantin-Nataf, Cathy; Fawdon, Peter +18 more
The European Space Agency (ESA) and Roscosmos ExoMars mission will launch the "Rosalind Franklin" rover in 2022 for a landing on Mars in <uri xlink:href="http://2023.The">2023.The</uri> goals of the mission are to search for signs of past and present life on Mars, investigate the water/geochemical environment as a function of depth in …
Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy
Kochanek, C. S.; Foley, R. J.; Stalder, B. +28 more
We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227 by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of d ≃ 98 Mpc. We observed ASASSN-19dj from -21 to 392 d relative to peak ultraviolet (UV)/optical emission using high-cadence, multiwavelength spe…
The electron-capture origin of supernova 2018zd
Van Dyk, Schuyler D.; Filippenko, Alexei V.; Kelly, Patrick L. +27 more
In the transitional mass range (~8-10 solar masses) between white dwarf formation and iron core-collapse supernovae, stars are expected to produce an electron-capture supernova. Theoretically, these progenitors are thought to be super-asymptotic giant branch stars with a degenerate O + Ne + Mg core, and electron capture onto Ne and Mg nuclei shoul…
Photoevaporation versus core-powered mass-loss: model comparison with the 3D radius gap
Owen, James E.; Schlichting, Hilke E.; Rogers, James G. +1 more
The extreme ultraviolet (EUV)/X-ray photoevaporation and core-powered mass-loss models are both capable of reproducing the bimodality in the sizes of small, close-in exoplanets observed by the Kepler space mission, often referred to as the 'radius gap'. However, it is unclear which of these two mechanisms dominates the atmospheric mass-loss that i…
Cosmological constraints from DES Y1 cluster abundances and SPT multiwavelength data
Bacon, D.; Smith, M.; Abbott, T. M. C. +89 more
We perform a joint analysis of the counts of redMaPPer clusters selected from the Dark Energy Survey (DES) year 1 data and multiwavelength follow-up data collected within the 2500 deg2 South Pole Telescope (SPT) Sunyaev-Zel'dovich (SZ) survey. The SPT follow-up data, calibrating the richness-mass relation of the optically selected redMa…
Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample. I. A catalogue of homogeneous chromospheric activity
Recio-Blanco, A.; de Laverny, P.; Monteiro, M. J. P. F. G. +9 more
Aims: The main objective of this project is to characterise chromospheric activity of FGK stars from the HARPS archive. We start, in this first paper, by presenting a catalogue of homogeneously determined chromospheric emission (CE), stellar atmospheric parameters, and ages for 1674 FGK main sequence (MS), subgiant, and giant stars. The analy…
Evidence of a population of dark subhaloes from Gaia and Pan-STARRS observations of the GD-1 stream
Bovy, Jo; Erkal, Denis; Bertone, Gianfranco +2 more
New data from the Gaia satellite, when combined with accurate photometry from the Pan-STARRS survey, allow us to accurately estimate the properties of the GD-1 stream. Here, we analyse the stellar density variations in the GD-1 stream and show that they cannot be due to known baryonic structures such as giant molecular clouds, globular clusters, o…
Stars with Photometrically Young Gaia Luminosities Around the Solar System (SPYGLASS). I. Mapping Young Stellar Structures and Their Star Formation Histories
Rizzuto, Aaron C.; Kraus, Adam L.; Offner, Stella S. R. +1 more
Young stellar associations hold a star formation record that can persist for millions of years, revealing the progression of star formation long after the dispersal of the natal cloud. To identify nearby young stellar populations that trace this progression, we have designed a comprehensive framework for the identification of young stars and use i…