![Line profiles of ionized emission from the outflow in the nuclear region of W2246- 0526, marked with a red circle in the inserted figure showing the extended Hα emission in the W2246-0526 system, adapted from Vayner et al 2025 (40). Extremely broad and blueshifted emission is detected in [O III], Hα and Hβ, with maximum velocities of -13,400 km s−1 (V02), where 0 km s−1 is systemic. The detection of [O III] indicates that this emission originates beyond the broad-line region of the quasar. We also overlay the CIV λλ 1548 A, 1550 A emission line spectrum from rest-frame UV observations taken by the MUSE instrument, showing a similar profile to the optical lines. The solid black line shows the average velocity of the profile (V50). The red line shows the velocity of the dusty outflow traced through aromatic and aliphatic hydrocarbon absorption. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/10/Probing-The-Physics-Of-Dusty-Outflows.png?resize=1200%2C719&ssl=1)
Galaxy-scale outflows are of critical importance for galaxy formation and evolution. Dust grains are the main sites for the formation of molecules needed for star formation but are also important […]
aliphatic hydrocarbon dust
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
A Systematic Study On The Properties Of Aromatic And Aliphatic Hydrocarbon Dust In Active Galactic Nuclei With AKARI Near-infrared Spectroscopy
Recent near- and mid-infrared (IR) observations reveal the existence of appreciable amounts of aromatic and aliphatic hydrocarbon dust in the harsh environments of active galactic nuclei (AGNs), the origins of […]