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.
Nonnegligible mismodeling of astrophysical backgrounds and foregrounds may affect the details on the prediction for such unresolved population of point sources within the galactic bulge; see, e.g., [261].
In this work, the total potential [[PHI].sub.T] is composed by three components, representing the galactic bulge, disk and bar:
This should ultimately lead to a more precise estimate of the age of the galactic bulge. They might also determine if star formation processes in the bulge billions of years ago were different from what's seen in the younger disk of our galaxy.
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 study result shows that the mass of a supermassive black hole is approximately proportional to that of the central part of the galaxy (galactic bulge).
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.