1 code implementation • 27 Jan 2025 • Chuan Tian, C. Megan Urry, Aritra Ghosh, Daisuke Nagai, Tonima T. Ananna, Meredith C. Powell, Connor Auge, Aayush Mishra, David B. Sanders, Nico Cappelluti, Kevin Schawinski
We present a composite machine learning framework to estimate posterior probability distributions of bulge-to-total light ratio, half-light radius, and flux for Active Galactic Nucleus (AGN) host galaxies within $z<1. 4$ and $m<23$ in the Hyper Supreme-Cam Wide survey.
1 code implementation • 20 Dec 2022 • Chuan Tian, C. Megan Urry, Aritra Ghosh, Ryan Ofman, Tonima Tasnim Ananna, Connor Auge, Nico Cappelluti, Meredith C. Powell, David B. Sanders, Kevin Schawinski, Dominic Stark, Grant R. Tremblay
The classification precision of our models has a noticeable dependency on host galaxy radius and magnitude.
1 code implementation • 25 Jun 2020 • Aritra Ghosh, C. Megan Urry, Zhengdong Wang, Kevin Schawinski, Dennis Turp, Meredith C. Powell
This inferred difference in quenching mechanism is in agreement with previous studies that used other morphology classification techniques on much smaller samples at $z\sim0$ and $z\sim1$.
Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
1 code implementation • 1 Aug 2018 • Grant R. Tremblay, Françoise Combes, J. B. Raymond Oonk, Helen R. Russell, Michael A. McDonald, Massimo Gaspari, Bernd Husemann, Paul E. J. Nulsen, Brian R. McNamara, Stephen L. Hamer, Christopher P. O'Dea, Stefi A. Baum, Timothy A. Davis, Megan Donahue, G. Mark Voit, Alastair C. Edge, Elizabeth L. Blanton, Malcolm N. Bremer, Esra Bulbul, Tracy E. Clarke, Laurence P. David, Louise O. V. Edwards, Dominic A. Eggerman, Andrew C. Fabian, William R. Forman, Christine Jones, Nathaniel Kerman, Ralph P. Kraft, Yuan Li, Meredith C. Powell, Scott W. Randall, Philippe Salomé, Aurora Simionescu, Yuanyuan Su, Ming Sun, C. Megan Urry, Adrian N. Vantyghem, Belinda J. Wilkes, John A. ZuHone
The entire scenario is therefore consistent with a galaxy-spanning "fountain", wherein cold gas clouds drain into the black hole accretion reservoir, powering jets and bubbles that uplift a cooling plume of low-entropy multiphase gas, which may stimulate additional cooling and accretion as part of a self-regulating feedback loop.
Astrophysics of Galaxies