Galaxies vary in size and composition, with dark matter ratios being uniform on large scales but differing significantly on smaller scales. Tiny galaxies, such as Segue 1, exhibit extreme dark matter dominance—specifically, a 3400-to-1 ratio. It raises questions about missing mass and suggests the presence of dark matter and possibly a supermassive black hole (SMBH). Segue 1, previously thought to be a tiny red dot galaxy, likely lost its outer stellar population to gravitational forces from our own galaxy, highlighting complex galactic interactions.
In the case of tiny galaxies like Segue 1, a 3400-to-1 dark matter ratio raises questions about whether dark matter constitutes all the missing mass.
The hypothesis that Segue 1 once was a 'little red dot' suggests that its outer stars might have been stripped away by gravitational interactions with our galaxy.
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