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Astrophysics Source Code Library

Making codes discoverable since 1999

Searching for codes credited to 'Snyder, Greg'

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[ascl:2006.018] Powderday: Dust radiative transfer package

The dust radiative transfer software Powderday interfaces with galaxy formation simulations to produce spectral energy distributions and images. The code uses fsps (ascl:1010.043) and its Python bindings python-fsps for stellar SEDs, Hyperion (ascl:1207.004) for dust radiative transfer, and works with a variety of packages, including Arepo (ascl:1909.010), Changa (ascl:1105.005), Gasoline (ascl:1710.019), and Gizmo (ascl:1410.003); threaded throughout is yt (ascl:1011.022).

[ascl:2201.010] statmorph: Non-parametric morphological diagnostics of galaxy images

statmorph calculates non-parametric morphological diagnostics of galaxy images (e.g., Gini-M_{20} and CAS statistics), and fits 2D Sérsic profiles. Given a background-subtracted image and a corresponding segmentation map indicating the source(s) of interest, statmorph calculates the following morphological statistics for each source:
- Gini-M20 statistics;
- Concentration, Asymmetry and Smoothness (CAS) statistics;
- Multimode, Intensity and Deviation (MID) statistics;
- outer asymmetry and shape asymmetry;
- Sérsic index; and,
- several shape and size measurements associated to the above statistics, such as ellipticity, Petrosian radius, and half-light radius, among others.