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2 results for “galaxy size”
First Light And Reionisation Epoch Simulations (FLARES) IV: The size evolution of galaxies at z≥5
<p>Galaxy size results from the FLARES simulations. This is the companion dataset to: https://arxiv.org/abs/2203.12627 containing the data plotted within. The codes used to produce the data are available on GitHub: https://github.com/WillJRoper/flares-sizes-obs</p>
The size of galaxies in an era of ultra-deep imaging
<p>The traditional measurement of the size of galaxies, the effective radius, is a relic of the epoch when shallow imaging was unable to capture the full extension of astronomical sources. However, current deep imaging surveys have revolutionised our view of these objects, allowing us to regard critically our own conventions. In this sense, it is time to move from a definition of the light concentration of galaxies, the effective radius, to a definition that intuitively captures the concept of the size of galaxies, such as its edge or boundary. In this contribution, I will introduce a new definition of the size of a galaxy based on the gas density threshold value for star formation in galaxies. Remarkably, the new size definition not only captures what the human visual system identifies as the edge of a galaxy, but also dramatically decreases the scatter in the stellar mass - size relation by more than a factor of 2. What’s even more unique is that this size parameter unifies galaxies spanning 5 orders of magnitude in stellar mass on a single mass-size relationship. To place this discovery in the context of galaxy formation, I will discuss its application in two scientific cases: the nature of ultra-diffuse galaxies and the location of the onset of the stellar halo of a galaxy.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.