PEARLS: Two Distinct Populations of AGN Hosts Moving Between Star Formation and Quiescence

Fuente: arXiv

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Bibliographic Details
Main Authors:	Bowling, Gibson B., Ortiz III, Rafael, Willner, S. P., Cohen, Seth H., Carleton, Timothy, Windhorst, Rogier A., Jansen, Rolf A., Willmer, Christopher N. A., Maksym, W. Peter, Koekemoer, Anton M., Marshall, Madeline A., O'Brien, Rosalia, Saikia, Payaswini, Ricotti, Massimo, D'Silva, Jordan C. J., Coe, Dan, Conselice, Christopher J., Diego, Jose M., Driver, Simon P., Frye, Brenda L., Grogin, Norman A., Honor, Rachel, Summers, Jake, Pirzkal, Nor, Robotham, Aaron, Ryan Jr., Russell E., Smith, Brent M., Yan, Haojing, Cheng, Cheng, Nolan, Liam, Hammel, Heidi B., Milam, Stefanie N.
Format:	Preprint
Published:	2026
Subjects:	Astrophysics of Galaxies
Online Access:	Acceder al recurso
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_version_	1866910183888781312
author	Bowling, Gibson B. Ortiz III, Rafael Willner, S. P. Cohen, Seth H. Carleton, Timothy Windhorst, Rogier A. Jansen, Rolf A. Willmer, Christopher N. A. Maksym, W. Peter Koekemoer, Anton M. Marshall, Madeline A. O'Brien, Rosalia Saikia, Payaswini Ricotti, Massimo D'Silva, Jordan C. J. Coe, Dan Conselice, Christopher J. Diego, Jose M. Driver, Simon P. Frye, Brenda L. Grogin, Norman A. Honor, Rachel Summers, Jake Pirzkal, Nor Robotham, Aaron Ryan Jr., Russell E. Smith, Brent M. Yan, Haojing Cheng, Cheng Nolan, Liam Hammel, Heidi B. Milam, Stefanie N.
author_facet	Bowling, Gibson B. Ortiz III, Rafael Willner, S. P. Cohen, Seth H. Carleton, Timothy Windhorst, Rogier A. Jansen, Rolf A. Willmer, Christopher N. A. Maksym, W. Peter Koekemoer, Anton M. Marshall, Madeline A. O'Brien, Rosalia Saikia, Payaswini Ricotti, Massimo D'Silva, Jordan C. J. Coe, Dan Conselice, Christopher J. Diego, Jose M. Driver, Simon P. Frye, Brenda L. Grogin, Norman A. Honor, Rachel Summers, Jake Pirzkal, Nor Robotham, Aaron Ryan Jr., Russell E. Smith, Brent M. Yan, Haojing Cheng, Cheng Nolan, Liam Hammel, Heidi B. Milam, Stefanie N.
contents	We present the results of AGN--host-galaxy decomposition using JWST/NIRCam, HST/ACS, and HST/WFC3 imaging of the North Ecliptic Pole Time Domain Field (NEP-TDF). The light-profiles of 36 NIRCam-selected AGN candidates are modeled for measurement of their point sources, and point source-subtracted host-galaxy emission is used in SED modeling for star formation rate (SFR) estimation. Offsets from the canonical star-forming main sequence (SFMS) show that the host galaxies form two distinct groups distinguished by their star formation: a ``bridge'' between the moderate SFRs of radio sources and low SFRs of X-ray sources, and a cleanly-separated ``branch'' above $Δ\rm SFMS = -1$ whose SFR trends positively with AGN fraction. Branch galaxies include late-type galaxies with X-ray and radio detections and more dominant point sources that are most certainly AGN, while bridge galaxies have predominantly early-type morphologies with weaker point sources that may be due to compact stellar bulges. Both groups show evidence of recent transition between star formation and quiescence, but neither group shows preference for higher or lower stellar mass or redshift, suggesting that star formation in NIRCam-selected AGN-hosts is more strongly determined by AGN activity than by stellar mass.
format	Preprint
id	arxiv_https___arxiv_org_abs_2605_00822
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	PEARLS: Two Distinct Populations of AGN Hosts Moving Between Star Formation and Quiescence Bowling, Gibson B. Ortiz III, Rafael Willner, S. P. Cohen, Seth H. Carleton, Timothy Windhorst, Rogier A. Jansen, Rolf A. Willmer, Christopher N. A. Maksym, W. Peter Koekemoer, Anton M. Marshall, Madeline A. O'Brien, Rosalia Saikia, Payaswini Ricotti, Massimo D'Silva, Jordan C. J. Coe, Dan Conselice, Christopher J. Diego, Jose M. Driver, Simon P. Frye, Brenda L. Grogin, Norman A. Honor, Rachel Summers, Jake Pirzkal, Nor Robotham, Aaron Ryan Jr., Russell E. Smith, Brent M. Yan, Haojing Cheng, Cheng Nolan, Liam Hammel, Heidi B. Milam, Stefanie N. Astrophysics of Galaxies We present the results of AGN--host-galaxy decomposition using JWST/NIRCam, HST/ACS, and HST/WFC3 imaging of the North Ecliptic Pole Time Domain Field (NEP-TDF). The light-profiles of 36 NIRCam-selected AGN candidates are modeled for measurement of their point sources, and point source-subtracted host-galaxy emission is used in SED modeling for star formation rate (SFR) estimation. Offsets from the canonical star-forming main sequence (SFMS) show that the host galaxies form two distinct groups distinguished by their star formation: a ``bridge'' between the moderate SFRs of radio sources and low SFRs of X-ray sources, and a cleanly-separated ``branch'' above $Δ\rm SFMS = -1$ whose SFR trends positively with AGN fraction. Branch galaxies include late-type galaxies with X-ray and radio detections and more dominant point sources that are most certainly AGN, while bridge galaxies have predominantly early-type morphologies with weaker point sources that may be due to compact stellar bulges. Both groups show evidence of recent transition between star formation and quiescence, but neither group shows preference for higher or lower stellar mass or redshift, suggesting that star formation in NIRCam-selected AGN-hosts is more strongly determined by AGN activity than by stellar mass.
title	PEARLS: Two Distinct Populations of AGN Hosts Moving Between Star Formation and Quiescence
topic	Astrophysics of Galaxies
url	https://arxiv.org/abs/2605.00822