Tootfinder

🟡 Five progressive motions passed this morning at the SNP conference without a single voice against, passed by acclaim. (is that a record?)
🟡 Fantastic & inspiring speech from STUC head Roz Foyer, I feel all tingly with hope now
🟡 Susan Aitken (leader of Glasgow city council) spoke of an international conference for city mayors that she recently chaired and how the housing crisis is an international phenomenon, and how Scotland needs homes for all residents, including refuge…

The Prevalence of Bursty Star Formation in Low-Mass Galaxies at z=1-7 from H{\alpha}-to-UV Diagnostics
Marissa N. Perry (The University of Texas at Austin, Department of Astronomy), Anthony J. Taylor (The University of Texas at Austin, Department of Astronomy), Oscar A. Chavez Ortiz (The University of Texas at Austin, Department of Astronomy), Steven L. Finkelstein (The University of Texas at Austin, Department of Astronomy), Gene C. K. Leung (MIT Kavli Institute for Astrophysics and S…

The Prevalence of Bursty Star Formation in Low-Mass Galaxies at z=1-7 from Hα-to-UV Diagnostics
We present an analysis of bursty star-formation histories (SFHs) of 346 star-forming galaxies at $1\lesssim z<7$, selected from JWST/NIRSpec G395M and PRISM spectroscopy provided by the CEERS and RUBIES surveys. We analyze the correlation of star-formation rate vs. stellar mass (the star-forming main sequence, SFMS) for our sample and find no significant difference between the intrinsic scatter in the H$α$-based SFMS and the UV-continuum-based SFMS. However, the diagnostic power of the SFMS is…

The role of environment in triggering AGN -- evidence for a change at $z\sim$1
Jason Reeves (Tufts University), Anna Sajina (Tufts University), Henry Adair (Drexel University), Duncan Farrah (University of Hawaii, Manoa), Mark Lacy (NRAO)
https://arxiv.org/abs/2510.02193

The role of environment in triggering AGN -- evidence for a change at $z\sim$1
What triggers AGN in some galaxies and what role does this brief period of activity play in the overall evolution of galaxies are still open questions. This paper explores whether or not the local, on scales of $\approx$1\,Mpc, galaxy density plays a role in triggering AGN when controlling for stellar mass. We consider this question as a function of redshift and AGN selection in the X-ray vs. in the IR. We use available density maps within the 4.8\,sq.deg. XMM-LSS field in the redshift range $0…