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  • Institute of Astronomy and Astrophysics
Little Red Dots in JWST

2024-06-19 14:20 - 15:20

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Abstract

I will discuss a fascinating new object we have discovered with JWST/NIRCam imaging and grism spectroscopy at z>4. With compact sizes (<100 pc), red rest-frame optical colors, and ubiquitous broad Balmer lines, these objects have many hallmarks of accreting supermassive black holes. However, they have x100 the number density of UV-selected quasars, and appear to have very massive black holes compared to their hosts. Also, unlike most known accreting black holes, they show no signs of hot dust or X-ray emission. I discuss our ongoing efforts to understand the nature of the Little Red Dots, and what they may teach us about the coevolution of black holes and galaxies.

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