Author

A. Faisst

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Review Open access Aug 2026

Resolved Dust in z ≈ 1 Galaxies with JWST/MIRI MRS: Survey Description and First View on Polycyclic Aromatic Hydrocarbons, Mid-infrared Atomic Emission, and Warm H2

Dust is a key component of galaxies that regulates their thermal balance and, consequently, star formation and the buildup of stellar mass. Polycyclic aromatic hydrocarbons (PAHs) are responsible for reprocessing the radiative energy of galaxies, thus tracing dust evolution. Using JWST/MIRI Medium Resolution Spectrosco...

Wu-Ji Wang, A. Faisst, T. S. Lai et al. · 0 citations

Review Oct 2026

COSMOS-3D: Spectro-photometric Confirmation of Shabgard, a Cool, Metal-poor Brown Dwarf in the COSMOS Field

Brown dwarfs are unique laboratories for studying cool atmospheres, the low-mass end of star formation, and the transition between stars and giant planets. Identifying and characterizing the coldest brown dwarfs remains challenging, particularly at faint magnitudes in deep extragalactic surveys. We investigate COSMOS20...

B. S. Salmasi, P. Jalan, Tomotsugu Goto et al. · 0 citations

Review Sep 2026

CHAMPS: The COSMOS High-Redshift ALMA-MIRI Population Survey - A New Census of the Dusty Early Universe

Understanding how dust forms and evolves over cosmic time is a key open problem in extragalactic astrophysics. Galaxies in the early Universe were once thought to be mostly dust-poor, but recent discoveries of heavily dust-obscured galaxies near the Epoch of Reionization challenge models of early dust production and ra...

A. Faisst, Felix Martinez, J. Kartaltepe et al. · 0 citations