galactic bulge

galactic bulge

(gă-lak -tik) See galaxies; Galaxy.

galactic bulge

[gə¦lak·tik ′bəlj]
(astronomy)
A spheroidal distribution of stars that is centered on the nucleus of the Milky Way Galaxy and extends to a distance of about 3 kiloparsecs from the center.
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References in periodicals archive ?
The signal Fermi detected traces the distribution of stars in the Galactic bulge, hinting that the gamma-ray signal likely came from millisecond pulsars.
T] is composed by three components, representing the galactic bulge, disk and bar:
While the properties of Terzan 5 are uncommon for a globular cluster, they are very similar to the stellar population which can be found in the galactic bulge, the tightly packed central region of the Milky Way.
This should ultimately lead to a more precise estimate of the age of the galactic bulge.
Fifty Years of Wide Field Studies in the Southern Hemisphere: Resolved Stellar Populations of the Galactic Bulge and Magellanic Clouds; proceedings
Remarkably, there is a strong correlation between the mass of the SMBH and that of the galactic bulge (or its luminosity, or stellar velocity-dispersion) over a wide range of the mass.
A galactic bulge is thought to evolve through numerous mergers and collisions with other galaxies which would bring a large amount of interstellar materials into a galactic center and further the evolution of a black hole.
New details are emerging about the structure of the galactic bulge surrounding the black hole core.
Microlensing events detected by the OGLE or MOA groups in the galactic bulge are studied for caustic behaviour in the microlensing lightcurve to detect the presence of planets around the lens star.
Among the topics are the evolution and nucleo-synthesis of extremely metal-poor AGB stars, the second release of the Torun Catalogue of galactic post-AGB stars, double chemistry in galactic bulge planetary nebulae, and the role of AGB stars in the global gas and dust budget of the Large Magellanic cloud.
Generally, the black hole's mass was seen to be about 1,000th that of the mass of the surrounding galactic bulge.
Specific topics covered include the UV spectrum of the galactic bulge, helium and the hot horizontal branch, binary population synthesis and sdB stars at different metallicities, and hypervelocity stars.