Sprecher/in: Prof. Rogemar Riffel (UFSM, Brazil)

Titel: BAH - Blowing star formation away in Active galactic nuclei Hosts

Zusammenfassung: In this talk, I will present recent results from the Blowing star formation away (BAH) project, which aims to explore the interplay between AGN feeding and feedback through multiwavelength observations of nearby AGN hosts with strong H2 emission in the mid-infrared. JWST MIRI MRS and NIRSpec IFU observations of three BAH galaxies reveal molecular and ionised gas outflows and indicate that shocks are the dominant mechanism exciting the warm H2. These results are complemented by the analysis of a larger sample of ~60 nearby galaxies using archival MIRI MRS observations. AGNs exhibit broader emission lines than star-forming galaxies (SFGs), with the largest velocity dispersions found in radio-strong AGNs. H2 is generally less turbulent than the ionised gas, while coronal-line emitting gas exhibits even higher velocity dispersions. Taken together, these results point to shock heating as an
important mechanism shaping the kinematics and excitation of the ISM. This shock-induced gas heating may represent an important mechanism of AGN feedback, preventing the gas from cooling and forming new stars.

• Datum:
  13. Oktober 2026, 11:00 – 12:00
  
  
• Ort:

  AIP; Kirch-Haus, Konferenzraum

  
  
• Kontakt:
  Guilherme dos Santos Couto
  gcouto@aip.de