CAPERS-LRD-z9: A Gas-enshrouded Little Red Dot Hosting a Broad-line Active Galactic Nucleus at z = 9.288
Abstract
We present CAPERS-LRD-z9, a little red dot (LRD) that we confirm to be a z = 9.288 broad-line active galactic nucleus (BLAGN). First identified as a high-redshift LRD candidate from PRIMER NIRCam photometry, follow-up NIRSpec/PRISM spectroscopy of CAPERS-LRD-z9 from the CANDELS-Area Prism Epoch of Reionization Survey (CAPERS) has revealed a broad 3500 km s−1 full width at half-maximum Hβ emission line and narrow [O III] λλ4959, 5007 lines, indicative of a BLAGN. Based on the broad Hβ line, we compute a canonical black hole mass of
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 2025
- DOI:
- arXiv:
- arXiv:2505.04609
- Bibcode:
- 2025ApJ...989L...7T
- Keywords:
-
- James Webb Space Telescope;
- Active galactic nuclei;
- AGN host galaxies;
- Supermassive black holes;
- 2291;
- 16;
- 2017;
- 1663;
- Astrophysics of Galaxies
- E-Print:
- 25 pages, 8 figures, 3 tables, 1 appendix. Accepted to ApJL. V2: Updated acknowledgements. V3: Fixed plotting error in Figure 7 and updated name of "MoM-150135" to "MoM-BH*-1". V4: Accepted to ApJL, updated to respond to referee comments including an appendix containing an alternate flexible dust law fit
