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Record-Breaking Faint Satellite Galaxy of the Milky Way Discovered

Monday, November 21, 2016 19:55
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An international team led by researchers from Tohoku University has found an extremely faint dwarf satellite galaxy of the Milky Way. The team’s discovery is part of the ongoing Subaru Strategic Survey using Hyper Suprime-Cam.

This is the position of Virgo I in the constellation of Virgo (left). The right panel shows a density map of Virgo I’s member stars in a 0.1 deg x 0.1 deg area. The color range from blue -> white -> yellow -> red indicates increasing density.
Tohoku University/NAOJ

The satellite, named Virgo I, lies in the direction of the constellation Virgo. At the absolute magnitude of -0.8 in the optical waveband, it may well be the faintest satellite galaxy yet found.

This is an artist’s impression of Virgo I, demonstrated with Mitaka software.

Credit: Mitaka: 4D2U project, NAOJ

Its discovery suggests the presence of a large number of yet-undetected dwarf satellites in the halo of the Milky Way and provides important insights into galaxy formation through hierarchical assembly of dark matter.

Contacts and sources:

Hideaki Fujiwara
National Institutes of Natural Sciences (NINS)


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Total 2 comments
  • 2QIK4U

    That old hubble photo that looked back in time should of easily found this? It should be there if i look? Just no one noticed…

  • pulltabjunkie

    I believe absolutely NOTHING that NASA has to say. They must throw something out there occasionally so that the sheep will not question where all the money is going. Trillions spent on the space program, and all we have are pathetic CGI composites of a supposed ball earth, and sad footage of astroNOTS in a supposed space station, with visible harnesses under their clothing, and the women’s hair is so stiff from hairspray (to give the illusion of weightlessness) that it’s laughable. Anyone who believes the nonsense is just too lazy to actually do some research. They would rather just believe (and defend) this farce. Ask yourself: If we have supposed photos of Pluto from a satellite, or the moon, or mars, then why do we not have ONE single untouched photo of earth from space, EVER!
    I’ll tell you why…we have never been beyond our atmosphere. It is not possible, and instead of believing and defending them, you should be really pissed off like me.

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