Dwarf

Dwarf Planets
The IAU decision in 2006 to introduce the concept of Dwarf Planets has resulted in four bodies (so far) being placed in this category.

Dwarf Planets
In 2006, the IAU decided to create a new classification category for solar system objects called "dwarf planets" that is distinct from "planets". Pluto was reclassified as a dwarf planet.

Dwarf elliptical galaxy
Dwarf elliptical galaxies are elliptical galaxies that are much smaller than others, classified as dE. They are quite common, and are usually companions to other galaxies.

Dwarf Planets
Like the eight larger planets, the class of Solar System objects newly defined as "dwarf planets" are massive enough to be roughly round in shape.

Dwarf Novae
Dwarf novae undergo multiple eruptions in which their brightness increases by about 2 - 5 magnitudes. Each eruption lasts between 2 and 20 days with the nova duration related to the interval between outbursts.

Dwarf novae (DN) are a class of and that have multiple observed eruptions ranging in brightness from 2 to 5 magnitudes. Outburst intervals for each object are quasi-periodic, but within the DN family, intervals can range from days to decades.

Dwarf Novae are cataclysmic variables -- variable stars -- whose brightness often changes "cataclysmically" over short periods of time. They were first discovered by the English Astronomer J.R.

see white dwarf.
More on Dwarf Star
White Dwarf - in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation).

Data for the Dwarf Planets
Ceres Pluto Eris
Mean Orbital Distance (106 km)
413.715 ...

Dwarf Planets and Small Solar-System Bodies
The words asteroid, minor planet and planetoid are (unofficial and) interchangable.

Dwarf planet
Wikipedia, the free encyclopedia - Cite This Source
A dwarf planet is a celestial body within the Solar System that satisfies the following four conditions: ...

Red Dwarfs
A small, relatively cool star of the main sequence. Red dwarfs constitute the majority of stars and have a mass of less than one-half of the Sun.
Resources ...

Red dwarf
edit this page
History
A red dwarf is a small, cool, very faint, main sequence star with a surface temperature under about 4,000 K. Red dwarves are the most common type of star.

Red dwarf
From Wikipedia, the free encyclopedia
Jump to: navigation, search ...

White Dwarfs
A white dwarf surrounded by a cocoon of gas
Click on image for full size
NASA, STScI ...

About Dwarf Planets
Share
The vast majority of people were unaware that there was a dwarf planet classification until Pluto was demoted into the category.

Brown Dwarfs
The first clear evidence of the existence of a brown dwarf was published in 1995. The evidence consisted of observations from the large, ground-based telescopes on Mount Palomar, and an image taken by NASA's Hubble Space Telescope.

Brown dwarf cooks up a storm
...A team led by astronomers from the University of Toronto have observed noticeable changes in brightness of a nearby brown dwarf, roughly 40 light years away, indicating the presence of a gigantic storm...
READ MORE ...

White Dwarfs
Mainly when a star is frmed, its mass determins its end. Either it will become a black hole, neutron star, or white dwarf. If there is alot of mass then it will end its life by either becoming a black hole or neutron star.

White dwarfs
Stellar stability and evolution
Main sequence stars, like the Sun, represent a balance between the force of gravity, which is trying to compress the star, and radiation pressure, which is trying to make the star expand.

white dwarf
Home ... Science and Technology Astronomy and Space Exploration Astronomy: General ...
Essential reading Compare
side-by-side A Dictionary of Astronomy World Encyclopedia The Columbia Encyclopedia, ...

Antlia Dwarf Galaxy
Image credit: Very Large Telescope, ESO
A small dwarf spheroidal galaxy, of low surface brightness, that lies about 3.75 million light-years away in the constellation Antlia and is an outlying member of the Local Group.

dwarf planet and largest known asteroid in the asteroid belt and the first asteroid to be discovered. Ceres was found, serendipitously, by the Italian astronomer Giuseppe Piazzi of the Palermo Observatory on Jan. 1, 1801.

As a dwarf planet it fulfills most of the criteria for being a planet with the exception that it doesn't have the gravitational pull, because of its size, to clear space surrounding it of other celestial bodies.

White Dwarfs
Introduction to White Dwarfs
Where a star ends up at the end of its life depends on the mass, or amount of matter, it was born with. Stars that have a lot of mass may end their lives as black holes or neutron stars.

black dwarf - Space and Astronomy Definition - Online Dictionary and Glossa...
Gaussian White Noise Process - Dictionary Definition of Gaussian White Nois...
White Dwarf Linux - What is White Dwarf Linux ...

The Antlia dwarf is a very intriguing object. It is similar to the extreme dwarf spheroidals orbiting the Milky Way and Andromeda, and yet is relatively isolated in the Local Group.

1926 - Ralph Fowler uses Fermi-Dirac statistics to explain white dwarf stars,
1930 - Subrahmanyan Chandrasekhar discovers the white dwarf maximum mass limit, ...

Dwarf planet. The IAU didn't give up however. In 2006, it demoted Pluto to dwarf planet. That left only eight major planets in the Solar System and a great deal of public frustration.

dwarf galaxy
a small galaxy containing a few million stars; the most common type of galaxy in the universe
dwarf star ...

dwarf Any star with radius comparable to, or smaller than, that of the Sun (including the Sun itself).

Dwarf star: A star, which lies on the main sequence and is too small to be classified as a giant star or a super giant star. For example, the Sun is a yellow dwarf star.
E
Top of page ...

Dwarf Novae
These are intrinsically faint stars that exhibit a sudden increase in brightness by 2 to 5 magnitudes over a few days with intervals of weeks or months between outbursts.

Dwarf Nova
A star that undergoes novalike explosions every few days or weeks; believed to be associated with mass transfer onto a white dwarf in a binary system.
Dynamo Effect ...

DWARF GALAXY - Relatively small galaxy, typically containing ~107 stars. There is no official size below which a galaxy is designated a dwarf but any galaxy with a diameter below 30,000 light years can be considered a dwarf.

Dwarf planets: Pluto is already represented in the model. Ceres would be less than 1/100 of an inch in diameter - about 0.1 mm - a tiny speck of dust 71 yards from the 8-inch Sun, or 31 yards from Mars.

Dwarf - A main sequence star
Dynamo - A process in which electric currents within a rotating, convective body produce a magnetic field ...

Dwarf Nova
(a) A short-period binary system consisting of a hot white dwarf (or a hot blue sdBe subdwarf) and a much cooler and slightly more massive late-type main-sequence companion which fills its Roche lobe and is ejecting mass onto the white ...

DWARF PLANET
A dwarf planet is an object that orbits a sun, has enough mass to give it a nearly round shape, is not a satellite of another object, and has not "cleared the neighbourhood" of its own orbit. This definition was established on Aug.

L dwarf: A type of star that is even cooler than the M stars.
Lagrangian point: Point of stability in the orbital plane of a binary star system, planet, or moon.

Red Dwarfs
Red dwarfs are small stars that never really managed to get fired up. With masses of about 40% that of our sun, they are relatively cool, with a surface temperature of less than 3,200C, so they have a dimmer, reddish appearance.

Red dwarf -- A small star, on the order of 100 times the mass of Jupiter.
Reflection -- The deflection or bouncing of electromagnetic waves when they encounter a surface.

Red dwarf. A star that is smaller and cooler than the Sun. Most red dwarfs are about one-tenth the mass and diameter of the Sun.

Red Dwarf is a United Kingdom science fiction television situation comedy Media franchise, primarily comprising eight series of a television sitcom that ran on BBC Two between 1988 and 1999 and gained a cult following....
star which is a scant 20.

This dwarf elliptical companion of M31 in Andromeda was discovered by Messier on Aug. 10, 1773, but he never entered it in his oroginal catalog - however, he published its description and engraving in 1807.

Brown Dwarfs
Brown dwarfs are objects which are too large to be called planets and too small to be stars.

White Dwarfs
Chapter index in this window " " Chapter index in separate window
This material (including images) is copyrighted!. See my copyright notice for fair use practices.

black dwarf The end-point of the evolution of an isolated, low-mass star. After the white dwarf stage, the star cools to the point where it is a dark clinker in interstellar space.

White dwarf star: a small star, about the size of Earth; one of the last stages of a star's life ...

white dwarf
A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size. Typically, a white dwarf has a radius equal to about 0.01 times that of the Sun, but it has a mass roughly equal to the Sun's.

white dwarf
The small remnant star left after a low mass star explodes and creates a planetary nebula.

White Dwarf
A very small, white star that is the remnant core of a star that has completed fusion in its core. The sun will become a white dwarf.

white dwarf: A star that is the remnant core of a star that has completed fusion in its core. The sun will become a white dwarf.

A White Dwarf Star
According to the The Bright Star Catalog Sirius B has an effective temperature of about 32, ...

Dwarf Planets
This category of object is a recent creation (2006), introduced to accomodate objects orbiting the Sun which are not quite large enough to be termed 'planets', ...

Dwarf Planets: A New Way of Thinking About an Old Solar System (PDF, 315 KB)
Meteorites
Noblesville Fall
Searching for Meteorites
Follow the Falling Meteorite (Triangulation)
Edible Rocks ...

Dwarf galaxies are composed of up to 99 percent dark matter and only one percent normal matter like stars. This disparity makes dwarf galaxies ideal targets for astronomers seeking to understand dark matter.

Dwarf Galaxy
A relatively small galaxy. The Large and Small Magellanic Clouds, visible in the Southern Hemisphere, are two dwarf irregular galaxies that are neighbors of the Milky Way.
Elliptical Galaxy ...

Dwarf cepheids typically have a period of from 2.4 hours to 4.8 hours (i.e. 0.1-0.2 days), although as a group they range from as short as 1h20m to as long as 6h. AI Velorum's period is 2h40m.

Dwarfed by Storms
Tiny Mimas is dwarfed by a huge white storm and dark waves on the edge of a cloud band in Saturn's atmosphere.