Search Publications
The MAGPI survey: Science goals, design, observing strategy, early results and theoretical framework
Fisher, D. B.; Peng, Y.; Gupta, A. +40 more
We present an overview of the Middle Ages Galaxy Properties with Integral Field Spectroscopy (MAGPI) survey, a Large Program on the European Southern Observatory Very Large Telescope. MAGPI is designed to study the physical drivers of galaxy transformation at a lookback time of 3-4 Gyr, during which the dynamical, morphological, and chemical prope…
An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries observed by TESS
Garcia, S.; De Ridder, J.; Aerts, C. +4 more
Context. Intermediate- to high-mass stars are the least numerous types of stars, and they are less well understood than their more numerous low-mass counterparts in terms of their internal physical processes. Modelling the photometric variability of a large sample of main-sequence intermediate- to high-mass stars in eclipsing binary systems will h…
Measurements of the Dust Properties in z ≃ 1-3 Submillimeter Galaxies with ALMA
Smail, I.; Brandt, W. N.; Weiss, A. +13 more
We present Atacama Large Millimeter/submillimeter Array (ALMA) 2 mm continuum observations of a complete and unbiased sample of 99 870 µm selected submillimeter galaxies (SMGs) in the Extended Chandra Deep Field South (ALESS). Our observations of each SMG reach average sensitivities of 53 µJy beam-1. We measure the flux dens…
Multiphase feedback processes in the Sy2 galaxy NGC 5643
Rigopoulou, D.; Carrera, F. J.; García-Burillo, S. +11 more
We study the multiphase feedback processes in the central ∼3 kpc of the barred Seyfert 2 galaxy NGC 5643. We used observations of the cold molecular gas (ALMA CO(2-1) transition) and ionized gas (MUSE IFU optical emission lines). We studied different regions along the outflow zone, which extends out to ∼2.3 kpc in the same direction (east-west) as…
HOLISMOKES. VI. New galaxy-scale strong lens candidates from the HSC-SSP imaging survey
Suyu, S. H.; Cañameras, R.; Schuldt, S. +8 more
We have carried out a systematic search for galaxy-scale strong lenses in multiband imaging from the Hyper Suprime-Cam (HSC) survey. Our automated pipeline, based on realistic strong-lens simulations, deep neural network classification, and visual inspection, is aimed at efficiently selecting systems with wide image separations (Einstein radii θ
A More Precise Mass for GJ 1214 b and the Frequency of Multiplanet Systems Around Mid-M Dwarfs
Deming, Drake; Charbonneau, David; Cloutier, Ryan +2 more
We present an intensive effort to refine the mass and orbit of the enveloped terrestrial planet GJ 1214 b using 165 radial velocity (RV) measurements taken with the HARPS spectrograph over a period of 10 years. We conduct a joint analysis of the RVs with archival Spitzer/IRAC transits and measure a planetary mass and radius of 8.17 ± 0.43 M⊕<…
The radioactive nuclei (\textbf{26}) Al and (\textbf{60}) Fe in the Cosmos and in the solar system
Wang, W.; Diehl, R.; den Hartogh, J. W. +15 more
The cosmic evolution of the chemical elements from the Big Bang to the present time is driven by nuclear fusion reactions inside stars and stellar explosions. A cycle of matter recurrently re-processes metal-enriched stellar ejecta into the next generation of stars. The study of cosmic nucleosynthesis and this matter cycle requires the understandi…
The Cosmic Ultraviolet Baryon Survey (CUBS) - III. Physical properties and elemental abundances of Lyman-limit systems at z < 1
Faucher-Giguère, Claude-André; Johnson, Sean D.; Petitjean, Patrick +18 more
We present a systematic investigation of physical conditions and elemental abundances in four optically thick Lyman-limit systems (LLSs) at z = 0.36-0.6 discovered within the Cosmic Ultraviolet Baryon Survey (CUBS). Because intervening LLSs at z < 1 suppress far-UV (ultraviolet) light from background QSOs, an unbiased search of these absorbers …
Evidence for a compact object in the aftermath of the extragalactic transient AT2018cow
Steiner, James F.; Homan, Jeroen; Chakrabarty, Deepto +16 more
The brightest fast blue optical transients (FBOTs) are mysterious extragalactic explosions that may represent a new astrophysical phenomenon1. Their fast time to maximum brightness of less than a week, decline over several months, and atypical optical spectra and evolution are difficult to explain within the context of the core collapse…
Are All Post-starbursts Mergers? HST Reveals Hidden Disturbances in the Majority of PSBs
Heckman, Timothy; French, K. Decker; Nyland, Kristina +12 more
How do galaxies transform from blue, star-forming spirals to red, quiescent early-type galaxies? To answer this question, we analyzed a set of 26 gas-rich, shocked post-starburst galaxies with Hubble Space Telescope (HST) imaging in B, I, and H bands and Sloan Digital Sky Survey (SDSS) i-band imaging of similar depth but lower resolution. We found…