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Optimal metallicity diagnostics for MUSE observations of low-z galaxies
(2024-01-01)
The relatively red wavelength range (4800-9300 Å) of the VLT Multi Unit Spectroscopic Explorer (MUSE) limits which metallicity diagnostics can be used; in particular excluding those requiring the []λλ3726,29 doublet. We ...
The impact of supernova feedback on the mass-metallicity relations
(2024-01-01)
Metallicity is a fundamental physical property that strongly constrains galaxy formation and evolution. The formation of stars in galaxies is suppressed by the energy released from supernova explosions and can be enhanced ...
New Eruptive YSOs from SPICY and WISE
(2023-12-28)
This work presents four high-amplitude variable YSOs (≃3 mag at near-or mid-IR wavelengths) arising from the SPICY catalog. Three outbursts show a duration that is longer than 1 year, and are still ongoing. And additional ...
Accretion Disk Wind of Hercules X-1 during the Short High State
(2023-12-05)
Hercules X-1 is a nearly edge-on X-ray binary with a warped, precessing accretion disk, which manifests through a 35-day cycle of alternating High and Low flux states. This disk precession introduces a changing line of ...
XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk
(2023-12-01)
We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions. These regions are ...
ALMA 400 pc Imaging of a z = 6.5 Massive Warped Disk Galaxy
(2023-12-01)
We present 0.″075 (≈400 pc) resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations of the [C ii] and dust continuum emission from the host galaxy of the z = 6.5406 quasar, P036+03. We find that the ...
Emission-line properties of IllustrisTNG galaxies: from local diagnostic diagrams to high-redshift predictions for JWST
(2023-12-01)
We compute synthetic, rest-frame optical and ultraviolet (UV) emission-line properties of galaxy populations at redshifts from z ≈ 0 to = 8 in a full cosmological framework. We achieve this by coupling, in post-processing, ...
The cosmic build-up of dust and metals : Accurate abundances from GRB-selected star-forming galaxies at 1.7 < z < 6.3
(2023-11-15)
The chemical enrichment of dust and metals in the interstellar medium of galaxies throughout cosmic time is one of the key driving processes of galaxy evolution. Here we study the evolution of the gas-phase metallicities, ...
VVV-WIT-12 and Its Fashionable Nebula: A 4 yr Long-period Young Stellar Object with a Light Echo?
(2023-11-14)
We report the serendipitous discovery of VVV-WIT-12, an unusual variable source that seems to induce variability in its surrounding nebula. The source belongs to the rare objects that we call WITs (short for What Is This?) ...
Classification of Chandra X-Ray Sources in Cygnus OB2
(2023-11-01)
We have devised a predominantly Naive Bayes−based method to classify X-ray sources detected by Chandra in the Cygnus OB2 association into members, foreground objects, and background objects. We employ a variety of X-ray, ...