Mastodawn

Daniel Pomarède Aug 8, 2023

David Aitoff (1854-1933)

a Russian cartographer, who proposed the modified azimuthal map projection that bears his name: the Aitoff Projection
https://en.wikipedia.org/wiki/Aitoff_projection

This projection is the one we use in our cosmographic maps, as illustrated in the following thread ⤵️

#astronomy #astrophysics #cartography #cartographer #math #mathematics #aitoff #projection #cosmology #universe #galaxies #space #science #research #astrodon #map #maps

Aitoff projection - Wikipedia

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Daniel Pomarède Aug 8, 2023

This is the Aitoff All-Sky map of the V8k catalog of galaxy redshifts, in the supergalactic coordinate system, published in our "Cosmography of the Local Universe":
☑️ paper https://doi.org/10.1088/0004-6256/146/3/69 (Fig.1)
☑️ video https://vimeo.com/66641648
☑️ press release https://legacy.ifa.hawaii.edu/info/press-releases/flows/

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Daniel Pomarède Aug 8, 2023

This is the opening of our Laniakea video, featuring an Aitoff map of the galaxies of the XSCz catalog of redshifts that are contained within the volume of Laniakea.
☑️ video https://vimeo.com/104910552
☑️ paper https://nature.com/articles/nature13674
☑️ news article https://www.nature.com/articles/nature.2014.15819

Laniakea Supercluster

Vimeo

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Daniel Pomarède Aug 8, 2023

Side-by-side: All-sky Aitoff projections of the positions of galaxies from the XSCz Catalog: 1) all galaxies, 2) only galaxies located within the boundaries of Laniakea, our home supercluster of galaxies.

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Daniel Pomarède Aug 8, 2023

An Aitoff projection of the South Pole Wall in celestial coordinates. The projection is centered on the south pole, an operation which duplicate the north pole.
☑️ paper https://doi.org/10.3847/1538-4357/ab9952 (Fig.2)
☑️ an article by Dennis Overbye in the New York Times https://www.nytimes.com/2020/07/10/science/astronomy-galaxies-attractor-universe.html