The Astrology of Space - Matrix Software

The Astrology of Space
Two companion galaxies to M31, although more
distant, are the dust-free elliptical galaxy NGC 147
and NGC 185. NGC 185 contains large quantities of
dust and gas along with bright B stars. The great
Triangulum Nebula, M33 (NGC 598), is another
member of the Andromeda group. M33 is a spiral of
type Sc II-III which covers an area 68'x40' on the sky
at an estimated distance of 730 kpcs.
M33 has been found to contain types of variable stars
which are also known to occur in our galaxy, star
clusters, large amounts of neutral hydrogen, and a
helium abundance that does not differ much from that
observed in the Milky Way. NGC 6822 is a dwarf
irregular galaxy located rather close to the plane of
the Milky Way. The main body of the nebula has
dimensions of approximately 20’x10’, which
corresponds to 2.7xl.3 kpc at an assumed distance of
about 470 kpc. A number of bright HII regions are
located outside the main "bar" of the nebula. NGC
6822 is an Ir IV-V type galaxy and is slightly fainter
than the SMC. IC 1613 is a dwarf irregular galaxy of
the type Ir V and is similar, though much smaller, than
the Magellanic Clouds. IC 1613 appears to be-a very
old galaxy that is undergoing much star formation at
the present time.
The Dwarf Systems in the Local Group
An entirely new type of sidereal organization was
discovered by the astronomer Shapley in 1938. The
Dwarf Spheroidal Systems, as they are called, consist
only of resolved stars and no gas or dust has been
observed in these galaxies. They can best be
described as "super" globular clusters with a very low
surface brightness. The dimensions of these galaxies
are of the size of a small galaxy rather than of a large
globular cluster. Morphologically the dwarf spheroidal
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