A few eld ago , researchers discovered the existence of galaxies that had a piece too much regular matter in them . A new study now tot 19 more object to this collection , a find that uphold to create headaches for researchers .
Our model image galaxies forming in the gravitational wells of wide concentration of dark matter . This is a hypothetical sort of topic that does n’t interact with light , just gravity . Most galaxies in the universe conform to a precise ratio of regular issue to dark matter , the latter outweigh it by about one to five .
In dwarf galaxies , these proportion can be even more extreme , from 10 to even a thousand times more dark than unconstipated matter . But in these special galaxies , regular matter actually prevail over dark matter . And it is not just outlandish , it is an issue that challenges the standard model of cosmogony . As reported inNature Astronomya few weeks ago , research worker describe the discovery of these 19 sullen issue - hapless gnome galaxies . In particular , 14 are sequestrate forth from the influence of heavier galax .
" This result is very backbreaking to explicate using the standard galaxy organisation model in the setting of concordance cosmogony , and thus encourages people to revisit the nature of drear matter , " lead author Professor Qi Guo , from the Chinese Academy of Science , enunciate in astatement .
The uncovering was possible by combing data from the Sloan Digital Sky Survey and the release of 40 percent of the data from the Arecibo Legacy Fast ( ALFA ) catalog . Most dwarf galaxy study before were “ local ” around the Milky Way or other comparatively nearby extragalactic nebula . Dwarf Galax urceolata further afield were too faint to be distinctly seeable and could n’t be canvass in detail .
The team is now calling for deep observations of these wandflower . They know that unconstipated matter dominates the galaxies ' key few thousands of promiscuous - years , but more data is needed to precisely mensurate the proportion between glum and non - matter in these objects .
If the determination are substantiate , these galaxy will provide more weight to the growingbody of evidencethat galaxies can form without a lot of drab matter in them or that they can drop off it , although we do not know yet how that may happen .
