First Global Map Outside the Solar System

First time accepted submitter Kreuzfeld writes "For many years, astronomers have suspected that brown dwarfs — 'failed stars' with masses between those of planets and stars — have cloudy atmospheres. Our recent paper in Nature presents the first global, 2D map of the patchy clouds in the atmosphere of a brown dwarf: our neighbor, the 6.5 light-years-distant Luhman 16B. Eventually, astronomers will use this technique to make weather movies of global cloud patterns on brown dwarfs and extrasolar planets."

Comments

curious orientation

[somepunk]

The large scale structure seems to stretch between the poles, at fairly constant longitude, rather than around the axis at fairly constant latitude, like every other atmosphere we've encountered. Is there some reason they are really that way, or is it some artifact of the data gathering and rerduction?