The map produced also includes dust density isosurfaces computed by dust extinction values provided in a preprint article ' 3D maps of interstellar dust in the Local Arm: using Gaia, 2MASS and APOGEE-DR14' by Lallement et al.

Alves, as explained in ' Cosmography of OB stars in the Solar neighbourhood'.

The isosurface technique was first pioneered for Hipparcos by H.

Gaia Data Release 2 data as available from the Gaia Archive.

The techniques and input data used to create this map are based on the following: The gray shading behind parts of the map is intended to highlight the assumed inner and outer parts of the galaxy. These seem to line up largely with the isosurfaces shown. The mesh regions were then coloured based upon the number of Gaia DR2 stars with ionizing colours (colour index = 10 Gaia DR2 ionizing stars), light blue (between 4 and 10 Gaia DR2 ionizing stars) and dark blue (<= 4 Gaia DR2 ionizing stars).Īlso plotted on this map are a selection of ionizing stars as shown with dots on the map. This data set was converted into a scalar field by Gaussian smoothing the number of stars per cubic parsec and rendered into three-dimensional density meshes using the marching cubes algorithm. This selection allows to select mostly OB stars which are young and largely located in associations, typically close to the Galactic plane. This 3D map was developed by Kevin Jardine of Galaxy Map by first extracting the 72 million low error stars with error/parallax smaller than 0.1, and then selecting the 400 thousand stars from this set with negative colour index within 3000 parsec.

The solution showcased in the image above utilizes density isosurfaces, a technique more commonly used in industry (for example by the oil industry to model gas flows or by medical technicians to extract bone or other tissue images from MRI scans).

How do you display a map of a billion stars? Astronomers have been mapping the sky for thousands of years but the unprecedented nature of Gaia DR2 presents new challenges, both in the scale of the dataset and its three-dimensional (3D) nature. Image credit: Galaxy Map / Kevin Jardine.

More spells bring even more furry judgement to your foes.Figure 1: Map of the Milky Way within 3000 parsec of Earth as created by Galaxy Map / Kevin Jardine (webversion of this map allowing some interaction with the map is available here, and a downloadable file with the poster is available here). New weapons types – Master swords, staves and more to become a fur-midable fighter! Play as both cat and dog, either alone or with a friend! All new switch and local co-op gameplay. Brand new story set in the world of Felingard - and beyond! Play as both a cat and dog as you explore their kingdoms solo or with a friend! Quest in a world filled with magic, curious monsters, and go on a catventure like never before!įollowing the success of the acclaimed CAT QUEST, developers The Gentlebros return to the world of Felingard to expand on the original with more explosive spells, expanded weapon options, an exciting new character switch mechanic, and local co-op! Under threat from a continuing war between the cats of Felingard and the advancing dogs of the Lupus Empire, CAT QUEST II tells the tail of two kings, brought together against their will, on a journey of paw-some discovery to reclaim their thrones. About This Game CAT QUEST II is a 2D open-world action-RPG set in a fantasy realm of cats and dogs.

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