Not Far in the Dark
To confirm whether some galaxies have suspiciously low amounts of dark matter, we need to be sure how far away they are.
To confirm whether some galaxies have suspiciously low amounts of dark matter, we need to be sure how far away they are.
Today’s paper looks at observations of 19 low mass galaxies which appear to contain no dark matter, potentially challenging our overall understanding of galaxy formation.
Four new Milky Way dwarf satellite candidates were discovered in 2015 using the Dark Energy Survey. Fainter imaging data are used to further investigate their exact nature.
The discovery of a second dark matter deficient galaxy by van Dokkum et al. has caused the debate on galaxies lacking dark matter to resurface.
Today’s paper explores a rather interesting galaxy which seems to have a black hole much more massive than expected, and whether it’s next-door neighbour had anything to do with it…!
Today’s paper makes predictions for the yet-to-be-observed dwarf galaxy population around Andromeda’s satellite galaxy, M33. It provides scientific justification for a future mission with WFIRST.