![PAH ratio maps for the five PAHSPECS galaxies. We only show pixels that have a > 3σ measurement of the ratio. The left column shows NIRCAM color images using the F090W, F200W, F444W filters (M. J. Rieke et al. 2023). The second column shows the PAH6.2/PAH7.7 ratio. The third column shows the PAH11.3/PAH7.7 ratios. The fourth column shows the PAH3.3/PAH11.3 ratios. The final column shows [ArII]/PAH6.2. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/06/PAHSPECS-Spatially-Resolved-PAH.png?resize=1200%2C716&ssl=1)
We present spatially resolved spectroscopy with JWST/MIRI MRS of a representative sample of normal star-forming galaxies at z∼1.1 as part of the PAHSPECS program.
MIRI-MRS
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Icy Worlds, Imaging & Spectroscopy, Status Report
Oxygen And Nitrogen Isotopologues On Cold COCONUTS-2b Observed With MIRI/MRS
Linking the composition of gas giant planets to their formation paths has long been a goal in exoplanet science. Especially, cold gas giants with temperatures below ∼500K have been out […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Status Report
A Study of Polycyclic Aromatic Hydrocarbon Emission in 30 Dor as seen by JWST
Polycyclic aromatic hydrocarbons (PAHs) are responsible for strong mid-IR emission features near star-forming regions. It is well known that low-metallicity environments exhibit weaker PAH emission, but it is not clear […]
![JWST MIRI/MRS spatially maps of the [NeIII]/[NeII] emission lines. From top left (clockwise): NGC 7469, NGC 3256-N, NGC 3256-S, VV114, IIZw96 and NGC 5728.The apertures shown in Figure 2 are shown here as well. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/06/Polycyclic-Aromatic-Hydrocarbon-Emission.png?resize=1200%2C790&ssl=1)
Posted inAstrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
Polycyclic Aromatic Hydrocarbon Emission In Galaxies As Seen With JWST
We present a systematic study of mid-infrared spectra of galaxies including star-forming galaxies and Active Galactic Nuclei observed with JWST MIRI-MRS and NIRSpec-IFU.