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ASD Colloquium (Hybrid) |
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March
14 |
Presence and Power of Active Galactic Nuclei in Post-Starburst Galaxies Lauranne Lanz (Department of Physics, The College of New Jersey) While active galactic nuclei (AGN) and their feedback are often invoked as a means by which galaxies can transition from actively star forming to quiescence, the importance of this activity and its frequency in driving the transition remains a major open question in galaxy evolution. Post-starburst galaxies, caught within a Gyr of star formation activity, provide an important laboratory for searching for signatures of AGN feedback. I will present our work using Chandra and XMM observations to constrain the frequency and luminosity of AGN in post-starburst galaxies. While a high fraction of our galaxy sample is detected at X-ray wavelengths, we typically have very few photons per source, with indications that the emission mechanism may vary from source to source. As such, we developed a forward-modeling methodology to constrain the properties of this emission even on the basis of only a handful of counts. I will discuss both the forward modeling methodology and the implication of the AGN luminosities on the role of AGN activity in post-starburst galaxies.
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| Date | March 14, 2023 |
| Start/End Time | 03:45 PM - 05:00 PM |
| Location | B34, W150 and Teams |
| Website | https://science.gsfc.nasa.gov/660/seminars/ASDcolloq/ |
| Contact | Scott Noble |
| Email Address | scott.c.noble@nasa.gov |
| Event Type | Seminars/Colloquia |
| Options | Add to my calendar. |
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