3 papers
astro-ph.GA2026
Stochastic black hole growth tracks stellar mass in ultramassive galaxies
Michele Cappellari, Dieu D. Nguyen, Susan A. Kassin
Over the past three decades, it has been established that galaxy spheroids contain supermassive black holes (BHs) whose masses correlate tightly with the properties of their host g…
astro-ph.GA2026
The JWST Ultramassive Galaxy Sample -- I. Overview, Photometry, and Stellar Kinematics: Selecting Optimal Template Subsets via Non-Negative Matrix Factorization
Michele Cappellari, Dieu D. Nguyen, Susan A. Kassin
We introduce the JWST Ultramassive Galaxy Sample, comprising 8 extreme early-type galaxies () drawn as a representative subset fro…
astro-ph.GA2026
KiDS J1447-0149: The first spatially resolved spectroscopy of a relic galaxy beyond the local universe. An old high-dispersion core embedded in a compact rotating stellar structure
Johanna Hartke, Chiara Spiniello, Michele Cappellari +13
Relic galaxies are the descendants of high-redshift compact quiescent systems. We present the first spatially resolved spectroscopic study of J1447-0149, a massive relic at $z=0.21…