galactic halo

(redirected from Halo star)
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galactic halo

n.
See halo.

galactic halo

n
(Astronomy) astronomy a spheroidal aggregation of globular clusters, individual stars, dust, and gas that surrounds the Galaxy
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Despite only appearing on stage at the Brits around 8.45pm, the Halo star was back in Glasgow just after 11pm with a sleepy Blue Ivy in tow.
The three-day music feast hit a spectacular climax as the Halo star blasted through a set of her biggest hits.
With a pilot project studying 13 faint halo stars, Emily Cunningham (University of California, Santa Cruz) and Deason combined Hubble proper motions with spectra to obtain 3D velocities for each halo star.
The 32-year-old Halo star, who brings her Mrs Carter Show world tour to Glasgow's SSE Hydro on February 20, said: "I see music.
The Halo star is forking out the cash on two stylists, a top US hairdresser and a EUR4,000-a-night penthouse suite at the luxury Four Seasons Hotel in Dublin for her headline performance on Sunday.
The Halo star forked out the cash on two stylists, a top US hairdresser and a EUR4,000-a-night penthouse suite at the luxury Four Seasons Hotel for her headline performance on Sunday.
"Our age of M4 is also in excellent agreement with a third, very different stellar chronometer," the astronomers write, "namely the nuclear decay measurement of uranium and thorium, which yields 12.5 [+ or -] 3 [billion years] for a metal-poor halo star" (S&T: May 2001, page 23).
"We didn't expect to find that most halo stars have a shared origin," she added.
Many of the halo stars gather into starfishy arms, which yields an irregular diameter of as much as 10'.
These bodies mainly revolve around the center of the disk, which made it easier for the group to filter them out, leaving some 6,000 halo stars for further analysis.
These halo stars are grouped together in giant structures that orbit the center of our galaxy, above and below the flat disk of the Milky Way.
With the early universe in focus, a large sample of extremely metal-poor halo stars will be analysed and shed light on the formation and nucleosynthesis of the very first stars.This ambitious proposal ties together international expertise in atomic data calculations, stellar atmospheres, and chemical evolution modeling of our Galaxy, and directs the effort towards a common goal.