Tuesday, March 3, 2015
The Milky Way has suburbs?
New research
conducted at the Chilean sister of the Big Island’s Gemini Observatory has identified
a small star cluster that lives, well, out of town.
"This cluster
is faint, very faint, and truly in the suburbs of our Milky Way," said Dongwon
Kim, a student at the Australian National University, who worked with a team on
the Stromlo Milky Way Satellite Survey.
The initial
identification of the new stellar formation was made on during a survey of the southern sky by the Dark
Energy Camera on the 4-meter Blanco Telescope at Cerro Tololo Inter-American
Observatory.
It was confirmed using the immense light-gathering power of the southern
Gemini: the Gemini South telescope on Cerro Pachon in Chile.
More
on the Gemini Observatories here.
The
new cluster, dubbed Kim 2, is vanishingly faint and far, far away. The authors
called it a “a new, low luminosity star cluster in the outer halo of the Milky
Way.”
But
its presence is based on such challenging calculations that they’re not real
sure about the identification. “Spectroscopic observations for radial-velocity
membership and chemical abundance measurements are needed to further understand
the nature of the object,” they write.
Here’s the Science Daily report on the find.
Here’s where you canfind the report.
© Jan W.
TenBruggencate 2015
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