Hubble Space Telescope discovers loose spiral galaxy
The galaxy ESO 499-G37 lies in the southern border of the constellation of Hydra, which is shared with Antlia, NASA said in a statement.
The arms of a spiral galaxy have large amounts of gas and dust, and are often areas where new stars are constantly forming.
The galaxy's most characteristic feature is a bright elongated nucleus. The bulging central core usually contains the highest density of stars in the galaxy, where typically a large group of comparatively cool old stars are packed in this compact, spheroidal region.
One feature common to many spiral galaxies is the presence of a bar running across the center of the galaxy. These bars are thought to act as a mechanism that channels gas from the spiral arms to the center, enhancing the star formation.
Recent studies suggest that ESO 499-G37's nucleus sits within a small bar up to a few hundreds of light-years along, about a tenth the size of a typical galactic bar.
Astronomers think that such small bars could be important in the formation of galactic bulges since they might provide a mechanism for bringing material from the outer regions down to the inner ones.
However, the connection between bars and bulge formation is still not clear since bars are not a universal feature in spiral galaxies.
This was a joint project undertaken by the European Southern Observatory (ESO) and the Uppsala Observatory, which used the ESO 1-metre
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