Galaxies

A multi-band, multi-object fitting example with AstroPhot. Fitting seven bands from UV to IR, showing the data, model, and residuals.

💻 AstroPhot: Fitting Everything Everywhere All at Once in Astronomical Images

AstroPhot is a Python package for simultaneous multi-band, multi-object photometric fitting of astronomical images using automatic differentiation and GPU acceleration.

AstroPhot

AstroPhot is a Python package for simultaneous multi-band, multi-object photometric fitting of astronomical images using automatic differentiation and GPU acceleration.

📄 PROBES-I: A Compendium of Deep Rotation Curves and Matched Multiband Photometry

PROBES-I presents a homogenised catalogue of 3163 deep optical rotation curves with matched multiband photometry for late-type galaxies, enabling precision tests of galaxy structure and dark matter models.

Example isophotal ellipse fit on a spiral galaxy using AutoProf.

💻 AutoProf: An Automated Non-Parametric Light Profile Pipeline for Modern Galaxy Surveys

AutoProf is an automated pipeline for extracting non-parametric surface brightness profiles from galaxy images, designed to scale to the large datasets of modern wide-field surveys.

AutoProf

AutoProf is an automated pipeline for extracting non-parametric surface brightness profiles from galaxy images, designed to scale to the large datasets of modern wide-field surveys.

corner plot showing all combinations of structural parameters in the PROBES sample with corresponding slope and scatter of their relations indicated with an ellipse.

📄 The Intrinsic Scatter of Galaxy Scaling Relations

A Bayesian hierarchical analysis of the intrinsic scatter in late-type galaxy scaling relations, separating measurement error from genuine physical scatter and constraining galaxy formation models.

Radial Acceleration Relation plotted in grey with overlayed bars showing the direction of each source of scatter/error in the relation.

📄 The Intrinsic Scatter of the Radial Acceleration Relation

A statistical analysis of the intrinsic scatter in the Radial Acceleration Relation (RAR), placing tight constraints on the universality of the baryonic-to-total acceleration connection in late-type galaxies.