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Bulges are generally considered a part of the spheroid of spiral galaxies, which is made up of the bulge, the halo stars, and the globular cluster system.
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BULGETo swell or stick out; the part that swells or sticks out. C CELSIUS A metric temperature scale in which water freezes at 0 degrees and boils at 100 degrees.
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Bulge, Galactic: A thick region around the center of the Galaxy that spheroidal in shape, containing warm gas and metal-rich older stars.
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Bulge/ disk ratios may be used as part of a fully quantitative classification scheme, paralleling but not fully mimicking the Hubble sequence. The major distinction remains that between bulge = pop. II = halo population (more or less) and disk = pop.
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A bulge is a huge, tightly packed group of stars. The term commonly refers to the central group of stars found in most spiral galaxies.
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'The bulge in the neutron star causes the angle between the pulsar's rotation axis and its radio beam to change with time, creating the wobbling effect that we measure.' Lyne emphasizes that the oblateness is incredibly small: ...
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Sa -- large bulge, small arms, modest amounts of interstellar material and star formation Sb -- medium bulge, more interstellar material Sc -- small bulge, strong arms, lots of interstellar material and star formation ...
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Battle of the Bulge
The Ardennes Offensive was a major German offensive launched towards the end of World War II through the forested Ardennes of Belgium , France and Luxembourg on the Western Front ....
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Star with Midriff Bulge Eyed by Astronomers, JPL press release, July 25, 2001. Imaging the Surface of Altair, University of Michigan news release detailing the CHARA array direct imaging of the stellar surface in 2007. PIA04204: Altair, NASA.
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The huge equatorial bulge on Mars is greatly affected by the Sun's gravitational attraction. The Jet Propulsion Laboratory estimates that Mars' axis tilt changes from 15° to 30° over a period of millions of years.
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Galaxies come in two major shapes: flattened disks with a central bulge, called spirals, and amorphous, semispherical blobs, called ellipticals. If galaxies are found bunched up next to each other, they are said to lie in groups or clusters.
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Spiral galaxies, or type S, have a disk component and a bulge. All spirals have these two components; otherwise spirals have considerable variation. S0 type galaxies appear sort of intermediate between ellipticals and other spirals.
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Spiral galaxies like the one to the left have flat disks of stars with bright bulges called nuclei in their centers. Spiral arms wrap around these bulges. An extended spherical halo of stars envelops the nuclei and arms.
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Spirals are flat disks of stars with bright bulges in their centers. Spiral arms wrap around these bulges. Spiral arms probably form as the result of waves that sweep through the galactic disk.
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From our perspective on the Earth's surface we see two small bulges, one in the direction of the Moon and one directly opposite. The effect is much stronger in the ocean water than in the solid crust so the water bulges are higher.
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Looking at Jupiter's innermost large moon Io (pronounced ee-oo), a strange bulge seemed to be present on one side of this world.
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a squashed with a bulge at the equator. More detailed measurements show it to be shaped a bit like an inflated tetrahedron, although the approximation as a spheroid is accurate enough for most purposes.
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The bigger a galaxy's central black hole is, the more stellar mass its central " bulge" component has. Astronomers have long noted this relationship, wondering whether the black hole or the stellar bulge forms first.
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The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon (and away from the water on the far side).
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Expansion phase--Dynamic auroral disturbances form a bulge and this is the interval of time in which the bulge grows Westward-traveling surge--the bulge develops a "kink" that appears to move west Omega bands--torchlike forms appear, and drift east ...
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Such deformations are manifested in the form of slight bulges at the lunar surface, detectable only by sensitive instruments. The Moon, owing to its relatively large mass, exerts a gravitational force that likewise causes tides on the Earth.
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It is caused by a slow wobble in the Earth's axis due to the gravitational effects of the Sun and Moon on the Earth's equatorial bulge. A reasonable analogy is that of a spinning top - As the top slows down it will start to wobble.
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A spiral-shaped system of stars, dust, and gas clouds. A typical spiral galaxy has a spherical central bulge of older stars surrounded by a flattened galactic disk that contains a spiral pattern of young, hot stars, as well as interstellar matter.
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g = GM / R 2 In the case of the Earth, g comes out to be approximately 9.8 m/s2 (32 ft/s2), though the exact value depends on location because of two main factors: the Earth's rotation and the Earth's equatorial bulge.
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'Barrel distortion' is a curvature of the view, where the top, bottom and sides of a flat object, such as a wall, seem to bulge outward. The opposite type of distortion is called 'pin-cushion' distortion.
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NGC6522 (right) sits right in the center of Baade's Window - a gap between "curtains" of dust clouds which lets us peek just next to the center of our Milky and see stars on the far side of galactic bulge.
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Figure 4: (A) Uncompensated tangential accelerations cause (B) tidal distortions in which all the … Figure 5: Unequal forces on two tidal bulges, leading to retardation of the spin of … ...
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the chunks of matter, taking up a volume no more than a few kilometers across, at the center of the head of a comet; (c) of a galaxy, the innermost regions of a spiral galaxy; it does not show spiral structure and is visible from the sky as a bulge ...
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 See also: Light, Orbit, Solar, Sun, Earth
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