Definition: ionic (or ionized) gas: Gas whose atoms have lost or gained electrons, causing them to be electrically charged.
ionized State of an atom that has had at least one of its electrons removed.
ionosphere Layer in Earth's atmosphere above about 100 km where the atmosphere is significantly ionized, and conducts electricity.
ionized gas
a gas that has been heated to a state where it contains ions and free-floating electrons; also known as a plasma
ionosphere ...
Ionized
(a) Having lost one or more electrons from an atom.
(b) If the atoms of a gas have lost one or more electrons, they are said to be ionized.
Hot, ionized medium
The HIM consists of very hot gas at temperatures higher than half a million kelvins. This gas is heated by supernovae explosions which blast large bubbles of hot gas into the surrounding interstellar medium.
Singly-ionized iron group elements
In 1970s, much research focused on the abundances of iron group elements in the Sun.
Ionized hydrogen - that is, hydrogen with its electron missing. [C95]
H II Condensation
A high-density H II region. [H76]
H II Region ...
Non-ionized helium (He I) line at 587.6 nm and no strong silicon absorption feature near 615 nm.
Type Ic
Weak or no helium lines and no strong silicon absorption feature near 615 nm.
When ionized, Hydrogen loses its electron and becomes a single proton. This is referred to as HII.
Singly ionized helium lines (H I) either in emission or absorption. Strong UV continuum.
10 Lacertra
B ...
Highly ionized stuctures thus seem to exist in the IGM, which were at one time much more common than bright galaxies.
A weakly ionized region of the 's atmosphere which conducts electricity. The ionosphere lies at the base of the above the 60-km altitude, and reflects radio frequencies below about 30 MHz.
Lines of ionized calcium (Ca II) are the most conspicuous. Many lines of ionized and neutral metals are present. Hydrogen lines are weaker even than in F-type stars.
Sun, Capella
K ...
Cloud of ionized hydrogen.
Hertzspurng-Russell Diagram
A diagram which helps scientists understand different kinds of stars. click here to learn more.
stream of ionized hydrogen—protons and electrons—with an 8% component of helium ions and trace amounts of heavier ions that radiates outward from the sun at high speeds.
ionic (or ionized) gas
Gas whose atoms have lost or gained electrons, causing them to be electrically charged. In astronomy, this term is most often used to describe the gas around hot stars where the high temperature causes atoms to lose electrons.
a cloud of ionized hydrogen around a hot star.
a cloud of neutral hydrogen emitting in the radio band.
a cloud of cold atomic hydrogen gas.
a cloud of dust that blocks light.
A region of ionized hydrogen around a hot star.
H-R Diagram
A plot of the intrinsic brightness versus the surface temperature of the stars.
plasma--Any ionized gas that conducts electricity and is affected by magnetic fields
prominence--A mass of cloud-like gas that rises from the Sun's chromosphere ...
fully ionized plasma The state of a plasma where all the neutral particles have lost at least one electron.
Plasma. Any ionized gas, that is, any gas containing ions and electrons.
Plasma
A form of ionized gas in which the temperature is too high for atoms to exist in their natural state. Plasma is composed of free electrons and free atomic nuclei.
Kuhn's book revolutionized the history and philosophy of science, and his concept of paradigm shifts was extended to such disciplines as political science, economics, sociology, and even to business management.
The distribution of ionized hydrogen (known by astronomers as H II (aitch two) from old spectroscopic terminology) in the parts of the Galactic interstellar medium visible from the Earth's northern hemisphere ...
The cometary gas is ionized by solar ultraviolet radiation, by electrons and by charge exchange with the solar-wind plasma. A large number of ionic species were identified, among them H30+ (the most dominant ion near the nucleus), H20+, OH+, C+.
A cloud of glowing, ionized gas, usually taking the form of a hollow sphere or shell, ejected by a star in the late stages of its evolution.
planetesimal - (n.) ...
magnetoplasmadynamics (NASA Thesaurus) The study of the dynamics of generating electricity by passing a beam of ionized gas through a magnetic field. magnetoplasmadynamics (NASA SP-7, 1965) = magnetohydrodynamics.
H II region cloud of ionized hydrogen around a hot, luminous star (usually O or B-type).
The Rosette Nebula, just to the east of Epsilon Mon and one of the most famed of diffuse nebulae, is illuminated (ionized) by hot stars within a whole young cluster at its hollowed-out center. The inner portion is seen here.
The sources of instability in a Cepheid variable are the regions where helium and hydrogen become ionized, with the region of helium becoming fully ionized the dominant instability region. The ionization of an atom in a plasma has two effects.
During the two-week day, atoms and molecules are ejected by a variety of processes from the lunar surface into ballistic trajectories, ionized by the solar wind, and then driven by electromagnetic effects as a collisionless plasma.
The H in the warm intercloud medium is both neutral and ionized. Ionization is produced by high-energy UV photons produced by stars that travel through interstellar space until they are absorbed.
These spew a gas of particles into space that become ionized as Io moves about its orbit, and these particles eventually diffuse into the rest of the region surrounding Jupiter.
Part of the Orion Nebula, the Orion Bar - where gas on the edge of the nebula is partly ionized by intense radiation from nearby hot young stars - provided another target for Herschel to feast on.
Ostrom was an United States paleontologist who revolutionized modern understanding of dinosaurs in the 1960s, when he demonstrated that dinosaurs are more like big non-flying birds than they are like lizards , ...
An A star whose spectrum has unusually strong lines of some ionized metals and rare earth elements, pointing to a vast overabundance (103 to 106 solar values) of these elements in the star's surface layers.
A red giant core is degenerate ionized helium, surrounded by a shell of hydrogen fusion, that expands the outer atmosphere in response to higher core temperatures.
Emission nebulae contain ionized gas (mostly ionized hydrogen) that produces spectral line emission. These emission nebulae are often called HII regions; the term "HII" is used in professional astronomy to refer to ionized hydrogen.
HII Region: "HII" (pronounced H two) is ionized hydrogen. (The roman numeral refers to the ionization state. I means neutral, II means one electron ionized, III means two electrons ionized, etc.
A few years after Bayer's Uranometria appeared, astronomy was revolutionized by the invention of the telescope, ...
The development of the pendulum-controlled clock in the late 1650s revolutionized mechanical timekeeping. The pendulum is an ideal timekeeping device because its swing is kept constant by a natural restoring force - gravity.
He theorized that ionized hydrogen gas clouds surround hot stars (the "Strömgren sphere").
The solar wind consists of particles, ionized atoms from the solar corona, and fields, in particular magnetic fields. As the Sun rotates once in about 27 days, the magnetic field transported by the solar wind gets wrapped into a spiral.
For K-type stars, their spectral lines are characterized by the presence of many neutral and ionized metallic lines (iron, calcium, and strong molecular lines like CH and cyanide) and very weak hydrogen Balmer lines.
Measure composition of ionized molecules originating from Saturn's ionosphere and Titan, investigate sources and sinks of ionospheric plasma, study effect of magnetospheric- ionospheric interaction on ionospheric flows, ...
The Big Bang created a universe filled with hot, ionized hydrogen and helium. After about 380,000 years, the universe expanded and cooled enough for electrons and atomic nuclei to recombine, forming UV-absorbing, neutral hydrogen and helium atoms.
Most space physicists say that ionized gas in the upper atmosphere above Jupiter's magnetic poles sometimes behaves like a powerful radio laser or maser.
Thermal radio emission is observed from clouds of ionized hydrogen (termed H II regions) located along the spiral arms of the Galaxy.
Class J nebulae containing ionized gas could contain a warp core explosion. The Delta Flyer ejected its sabotaged warp core into such a nebula during the Antarian Trans-stellar Rally in 2377, to protect those attending the race. (VOY: "Drive") ...
Plasma - A fully or partially ionized gas
Plasma Tail - A narrow, ionized comet tail pointing directly away from the Sun
Plate - A section of the Earth's lithosphere pushed about by convective currents within the mantle ...
Charge exchange The loss of an electron by an atomic particle to an ionized atom. This can occur when neutral interstellar material leaks into the heliosphere and runs into ionized solar wind to create pick-up ions.
plasma A state of matter wherein all atoms are ionized; a mixture of free electrons and free atomic nuclei.
polarization The alignment of the electric fields of emitted photons, which are generally emitted with random orientations.
On other planets, such as Venus, gaseous water is cracked by solar ultraviolet, and the hydrogen is ionized and blown away by the solar wind. This effect is slow, but inexorable. It is believed that this is the reason why Venus has no water.
The red colors represent what is known as an emission nebula, where ionized hydrogen (which was excited by energy from nearby young, hot stars) falls back to its unexcited, normal, run of the mill ground state.
H II region: A region of hot gas surrounding a young star or stars that is mostly ionized. The energetic light from these young stars ionizes the existing gas.
The Earth's magnetic field and its interaction with the solar wind also produce the Van Allen radiation belts, a pair of doughnut shaped rings of ionized gas (or plasma) trapped in orbit around the Earth.
HII region: A region of ionized hydrogen around a hot star.
Hirayama families: Families of asteroids with orbits of similar size, shape, and orientation; believed to be fragments of larger bodies.
176. H II Region
A region of ionized hydrogen around a hot star.
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177. Half-Life
The time required for half of the atoms in a radioactive sample to decay.
Hydrogen Alpha - A specific emission line of ionized hydrogen at 656.3 nanometers. Hydrogen-alpha emissions are responsible for the red color in emission nebulae.
Solar wind: The stream of charged particles and atoms (mainly ionized hydrogen but actually a mixture of all atoms in the Sun) moving outward all the time from the Sun with low velocities in the range 300-500 kilometers per second.
 See also: Light, Energy, Solar, Earth, Sun
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