Institution
Canadian Institute for Theoretical Astrophysics
Recent research
- AI & ComputingOpen access
Simultaneous PSF Matching via Dual Kernel Optimization
Abstract Standard point spread function (PSF) matching algorithms consider one image as the reference and aim to find a convolution kernel such that, when applied to the reference image, the PSFs of the reference and non-reference images are matched. This method works well if one...
- Physics & SpaceOpen access
Distance Estimation using Globular Clusters and Ultra-Compact Dwarfs
Abstract The tight scaling relation between absolute magnitude and internal velocity dispersion (σ) for globular clusters (GCs), referred to as the GC velocity dispersion (GCVD) relation, has shown great potential as a distance estimator. However, at the high-luminosity end of th...
- Physics & SpaceOpen access
Hot blue progenitors of stellar-mass black holes
Abstract While the connection between massive stars and supernova explosions is well established observationally, the link between massive stars and black hole formation remains elusive. Some massive stars may collapse directly to black holes without a successful supernova, and m...
- Physics & SpaceOpen access
Abstract We construct and characterise a sample of 146 little red dots (LRDs) across 2.0 < z < 9.3, selecting all sources with v-shaped UV-optical continua from JWST NIRSpec/PRISM spectra and compact morphologies in NIRCam/F444W imaging. We show that LRD continuum spectra are wel...