University of Wisconsin

Space Astronomy Laboratory



OBJECT: Sanduleak 69-270
Target ID #4519

UW Astronomer: Chris Anderson

Sanduleak 69-270 is an eleventh magnitude star in the Large Magellanic Cloud. It has been shown to be polarized in the optical by about three percent. This star, since it is hotter than 69-239, is going to be slightly brighter in the ultraviolet.

The Large Magellanic Cloud (LMC) is a satellite galaxy of our own Milky Way Galaxy, about 150,000 light years away from us. We now have indications that it has a different (smaller) amount of heavier elements than ours. Studies of interstellar dust, which may carry a sizeable fraction of the interstellar heavy elements in a galaxy, will be important in comparative studies of the evolution of the LMC and the Galaxy.