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Item: Astrophysics -> Category: Science -> Author: DF -> Revision: 25/07/2008
Glossary of astrophysics

Abell: Cumulus catalog of Galaxies. The creator was the astronomer George Abell, who gave him name.

 

Aberration: distortion apparent in the movement of the stars produced by the speed of light in combination with that of the Earth.

 

Abside: name used for the ends of the axis of the elliptical orbit that describes a celestial body.

 

Absolute magnitude: magnitude of a star if it is found at a distance of 10 pársecs of the Earth.

 

Accelerating fermi: type of acceleration advocated by the astronomer Enrico Ferni. For him the Milky Way functioned as a kind of particle accelerator.

 

Acrecion: accumulation of amounts of dust and gases in the stars such as stars and planets.

 

Afelio: farthest point of the orbit of a star on the status of the Sun. Much of the planets, having circular orbits, there is no variation of this distance.

 

Agglomeration globular: accumulation of massive stars in a galaxy, which revolve due to gravity.

 

Agglomeration: a situation which occurs when galaxies are closer to one another which is expected.

 

Albedo: fraction of sunlight reflected by a body such as a planet or a moon. The albedos 1 reflect any light and 0 anything.

 

Almagest: treaty astronomy Claudius Ptolemy, which includes all the mathematical knowledge from antiquity as well as a catalog of stars.

 

Ángstrom: unit of length equal to 0.00000001 centimeters. Usually abbreviated as 1 x 10 -8 cm.

 

Anión: negatively charged atom by the gain of one or more electrons. Its equivalent positive charge is called cation.

 

Annihilation: disappearance of a particle and its antipartícula corresponding due to a collision. These are converted into energy.

 

Anomaly: gravitational that is the difference between the gravity is calculated and one that is observed.

 

Antileptón : antipartícula de los leptones, es decir, de aquellos fermiones que no poseen carga de color.

 

Antilepton: antipartícula of leptones, ie those who do not possess fermions burden of color.

 

Antileptoquark: antipartícula a leptoquark. It is the opposite of particle bosons that make leptones and quarks change their properties.

 

Antimateria: field formed by the antipartículas. Most of them were annihilated with the Big Bang or Great Explosion.

 

Antiparticula: particle equal to those that form the normal matter that only have a negative electric charge.

 

Antiprotón: antipartícula a proton. This is the particle that has a negative charge and is composed of three quarks.

 

Antiquark: antipartícula a quark possessing anticolor. It also called antileptocuark.

 

Apoapsis: farthest point in orbit from the center of a planet. There are several ways to apoapsis as afelio or swing.

 

Apogee: is the maximum distance between the Earth and the object that orbits around it, ie the Moon.

 

Association stellar: group of stars that are dispersed but having the same nucleus. They do not have the density to form cumulus open.

 

Asteroid: small rocky body that revolves around the sun. Usually found between Mars and Jupiter.

 

Astronomical unit: drive away from the Solar System. Equivalent to the distance from the Sun to Earth.

 

Atmosphere: gaseous layer that surrounds the planets and the stars. When it is pierced by light absorption lines is formed or broadcast.

 

Átomo: smaller component of a chemical element that retains its properties and identity. They are composed of protons, neutrons and electrons.

 

Attendance gravitational: action which alters the trajectory of a spacecraft due to the gravitational force of a celestial body.

 

Aureola galactic: spherical region surrounding the core of a galaxy. It may exceed the limits of a bright galaxy.

 

Aurora: light in the ionosphere caused by the interaction of sunlight and dust of a planet's magnetic field.

 

Axion: it is a particle subatómica which could correspond to the dark matter in the universe.

 

Baricentro: center of mass of a mechanical system. This is the point that is used as a reference center of the solar system.

 

Barion: particle subatómica composed of three quarks. They interact with a strong nuclear force.

 

Basalt: predominant type of volcanic rock on the Moon. These range from lava rock more common.

 

Big Bang: theory that a large eruption occurred approximately 15 million years gave rise to life.

 

Binary star: two stars are formed at the same time and having the same center of gravity.

 

Bipolar flow: expulsion of gas in two opposing currents because it was not contracted with the force of gravity.

 

Black body: object that absorbs all the heat it arrives. The wavelength depends on its temperature.

 

Black Dwarf: in the diagram Hertzsprung-Russell is a white dwarf that stops issuing heat with the passage of time.

 

Black hole: concentration of mass with a large force of gravity that prevents it from escaping nothing inside.

 

Boson: particle that carries strength and that is elemental in nature. He put this name in honor of Satyendra Nath Bose.

 

Bremsstrahlung: loss of energy of the particles when traveling through this area. He also called radioactive slowdown.

 

Brightness: amount of energy that is capable of emitting a celestial body in all directions in a second.

 

Brightness: brightness or amount of irradiation of a star. This term is misused in astrophysics.

 

Brown dwarf: in the diagram Hertzsprung-Russell is an object with more mass than a small planet, but that does not reach the solar mass of stars small.

 

Button: part of the six quarks. Have differences in flavor. He descubirto by Fermilab (Fermi National Accelerator Laboratory).

 

Carbon Cycle: Cycle reactions by which the nitrogen nuclei become thanks to the helium isotopes of carbon, nitrogen and oxygen. It is the method of generating energy from some stars.

 

Casquetes polar: areas of the Earth and Mars that are close to the poles. They usually consist of gases and substances frost.

 

Cationic: positively charged atom for the loss of one or more electrons. It is one of the main components of the salts.

 

CCD: electronic device that lets you capture the intensity of small amounts of light. Its lead as a device Cargo Acoplada.

 

Cefeida: type of star red or yellow whose luminosity varies in short periods of time. Delta Cephei is the main star of this type.

 

Celestial coordinates: pair of numbers that a body found in the celestial sphere. They are similar to longitude and latitude.

 

Celestial Sphere: area of sky around Earth. In this area is where so apparent move the stars.

 

Centrifugal force: inertia force serving outward when a body is moving rotary.

 

Chain perseo-piscis: region of space that houses a large number of galaxies, which are shaped chain.

 

Color Index: difference between the magnitude B or visual or blue and yellow. This difference depends on the temperature.

 

Color: abstract property of the interaction between elementary particlesThey may not be visible to the naked eye because human eyes are sensitive to their brightness.

 

Comet: body size of an asteroid composed of solids and gases. Traveling by an orbit around the sun.

 

Concealment: astronomical phenomenon that is blocking the light of a celestial object by the interposition of another object.

 

Conjunction: aligning in the sky two celestial bodies viewed from a third party. Everyone has the same length heavenly.

 

Constellation: a set of nearby stars to Earth. Also known by this name to one of the divisions of the celestial sphere.

 

Convection: movement of a fluid caused by the high temperatures. The stars have heat in its interior by this action.

 

Corpúsculo planetarium: small body that increases its surface area due to collisions. Over time it becomes a planet.

 

Cosmic rays: particles and atomic nuclei emitting energy to collide against the Earth's atmosphere. Traveling at a speed close to that of light.

 

Cosmos: word of Greek origin that means the universe and that it was opposed to chaos. Cosmology is the science that studies the universe.

 

Course: influence of a force with respect to a region of spaceThose forces can be magnetic or gravity.

 

Cromosfera: layer of the atmosphere of the Sun and other stars, which is located in the crown of the photosphere.

 

Crown: top and outside of the solar atmosphere. It can be seen with the use of telescopes called coronógrafos.

 

Cuark: subpartícula to form protons and neutrons. They are the main constituents of matter. También se puede llamar quark. You can also call quark.

 

Cuasar: stellar object extragaláctico shaped and emits bright Sometimes known as a quasar.

 

Cumulation of galaxies: whole galaxies together gravitatoriamente. Their numbers vary from dozens to hundreds.

 

Cumulation of stars: Joint Stars limited by the gravitational attraction. Their number varies from hundreds to millions.

 

Dark matter: the area of the universe that can not be seen and that is detected by its gravitational influence.

 

Day apparent: time elapsed between two culminaciones successive. For example midday at noon.

 

Deceleration radioactive: loss of energy of the particles when traveling through this area. Also called the Bremsstrahlung.

 

Decomposition: division of a particle in several distinct. The resulting particles can also be affected by this action.

 

Deferente: according Hicarpo and Ptolemy is each of the quarters of the Earth or close to it on a planet that moves.

 

Degeneration: high understanding of this matter in some white dwarfs. They are not met Act gases general.

 

Density: relationship between the mass and size of an object. It is measured in grams per cubic centimeter (g / cm 3).

 

Deterioration orbital: damage to objects that move so slowly that they can not maintain orbit.

 

Deuterium: atomic nucleus consisting of a proton and a neutron. Harold Clayton Urey won a Nobel Prize for their discovery.

 

Device Charging Acoplada: electronic device that lets you capture the intensity of small amounts of light.

 

Deyección: field thrown to the surface of a planet. It may be because of a collision or a volcanic eruption.

 

Diagram Hertzsprung-Russell: representing the brightness of the stars depending on the temperature. It is a very important figure in astrophysics.

 

Diameter angle: amount of sky that appears to cover an object. In the case of the stars, they do not reach the second arc.

 

Disk accretion: accumulation in the form of disk amounts of dust and gases in the stars such as stars and planets.

 

Dwarf: name given to most of the stars in the diagram Hertzsprung-Russell. There are several types such as red, black or brown.

 

Dynamic friction: strength in the bodies that are in motion that is created by the effects gravity.

 

Eclipse: total or partial occultation of a star due to the interposition of another planet. The most common are the Sun and Moon.

 

Eclíptica: plane of the orbit of the Earth around the Sun. It is also apparent that the line runs through the Sun over a year.

 

Eddington limit: Maximum brightness that can pass through a gas. The name comes from astrophysicist Arthur Stanley Eddington.

 

Electromagnetic Radiation: type of radiation in which the propagation of waves coming from the electric or magnetic energy.

 

Electron: subpartícula atomic type fermiónico which is negatively charged and revolves around the nucleus.

 

Electronvoltio: unit measuring the energy of an electron to pass through a volt of a magnetic field.

 

Energy potential: energy of a body in a gravitational field. This associated with the degree of separation of two bodies attracted by gravity.

 

Epiciclo: small circle around which a planet rotates, which in turn rotates in a circle bigger. This is a term from the system self centered Ptolemy.

 

Ergoesfera: area around black holes. The theory of this phenomenon was made by the physicist Roy Kerr.

 

Escape Velocity: speed of an object plows able to escape a gravitational field.

 

Espin: physical property of subatomic particles similar to the movement of a peonza. This is an intrinsic property.

 

Ether: substance capable of carrying light waves. It was believed that it was able to occupy all the spaces in the same way as they do liquids.

 

Event horizon: hypothetical border of black holes. The speed out of this horizon is the speed of light.

 

Exiton: electron linked to a positive ion with a missing electron. It was discovered by Gregory Wannier in 1937.

 

Explosion radio: increasing radio broadcasts of astronomical objects.

After the explosion becomes a neutron star.

 

Extragalactico: means any substance, body or object that is located outside the Milky Way.

 

Facula: bright region of the photosphere which emits white light. Usually associated with sunspots.

 

False vacuum: region of space containing accumulations of energy when I thought that was empty.

 

Fermion: particle of antimatter and matter whose name was in honor of Enrico Fermi. It is one of the two types of elementary particles.

 

Foton: particle which is composed light. This is the unit of electromagnetic energy.

 

Filamento: gas cloud hanging over the photosphere by magnetic fields that looks like a dark structure.

 

Fluid modeling: technique that simulates the movement of celestial bodies. It uses a computer and the first principles of fluid mechanics.

 

Flute: changing the brightness of a star due to the impacts they exert on the field it attracted.

 

Focus: the imaginary line of a celestial body that goes from one pole to another and on which the body turns.

 

Fonon: mode of vibration that collides with an electron when it is transferring energy. This is a bosón with zero spin.

 

Force of gravity: one of the fundamental forces of nature. It is the interaction that occurs between two objects that have mass.

 

Fotosfera: region of the atmosphere of a star or sun where the creation of the light that emerges when viewed.

 

Fun: surface of any celestial body projected against the sky. This name is also known to some models of telescopes.

 

Gal: This is the unit of gravitational acceleration. It is measured in inches per second squared. Also named Galileo.

 

Galaxy active: type of galaxy that is characterized by the emission of large amounts of energy.

 

Galaxy: set of stars, clouds of gas and dust that are held together thanks to the force of gravity.

 

Gamma rays: electromagnetic radiation with little radio but with a lot of energy. It is produced in very violent astrophysical phenomena.

 

Ganymede: satellite of Jupiter that has the characteristic of being the largest in the Solar System. Its name comes from a Greek hero.

 

Gas: substance without shape or volume defined as one of the main components of galaxies.

 

Giant blue: Diagram Hertzsprung-Russell is a kind of star young, bright and with great mass.

 

Giant: This is a type of star that is characterized by its large size, and you have a great luminosity.

 

Gluon: bosón which carries strong force binds quarks and with each other. It has no mass or electric charge, but color.

 

Graviton: bosón transmitting the force of gravity. It is a particle that has not yet been detected experimentally.

 

Gravity: it is the interaction that occus between two bodies or objects that have mass.

 

H II Region: sort of a cloud of ionized hydrogen due to strong radiation. It is located around a hot star.

 

Halo: wrapper external galaxies and the stars isolated that contains much of its subject matter.

 

Heliosfera: region of space at serving the solar wind and that encompasses the entire solar system.

 

House bubble: electrically charged particle detector. This invention gave him a Nobel Prize in Physics to Donald A. Glaser. Glaser.

 

Hubble Constant: proportionality between the velocity of galaxies and the distance from the Earth. Measuring this constant can be made known to the age of the Universe.

 

Inclination: angle between the orbit of a planet and its ecliptic. Measure the orbital inclination.

 

Inflationary universe: name that is known to a stage of the universe before the Big Bang.

 

Infrarrojo: Infrared radiation which is beyond the red and is not visible from the Earth's surface.

 

Intergalactic Medium: space in between galaxies. It is not known because its composition has a density lower than the interstellar medium.

 

Interstellar absorption: decrease in the intensity of light from the stars to Earth due to the conversion of that light powder stars.

 

Interstellar dust: small particles of rock coated ice that are present in the interstellar medium.

 

Interstellar medium: space between the stars forming a galaxy that is fitted with matter and energy.

 

Intragaláctico: refers to any substance, body or object that is within the Milky Way.

 

Ion: atom which is electrically charged by the gain or loss of one or more electrons.

 

Ionisation: action by which an atom is electrically charged by the gain or loss of one or more electrons.

 

Ionosphere: upper atmosphere where particles are electrically charged.

Isofotas lines with the same gloss that has a purpose. They are used to observe galaxies and comets.

 

Isotope: particles with the same number of protons but other than neutrons. Each isotope is characterized by its number of neutrons.

 

It was Planck: period of time after the Big Bang explosion. Receive this name in honor of its discoverer More Planck.

 

Jets: jets of particles emitted by the accretion disk. It issued two jets fired emerging in opposite directions.

 

Latitude: the angular distance between a celestial body and the north and south of the Equator.

 

Law of gravity: law defining that two bodies that are attracted to a force directly proportional to the product of their masses and inversely proportional to the square of the distance.

 

Layer shock: the region where a planet's magnetic field begins to detect the solar wind. This is a border area.

 

Lemb: name that is known to the outer edge of the disk of a celestial body.

 

Lepton: fermión essential that burden has not color. There are six types of leptones and their ntipartículas.

 

Leptoquark: bosón to allow leptones and quarks make changes of properties.

 

Light year: distance that light travels in a vacuum in one year which is almost ten trillion kilometers. Its calculated using the formula 9.46 x 10 17 cm.

 

Line: issue different frequencies from the spectra of light produced when a gas burns.

 

Magellanic stream: gas that extend from the Magellanic Clouds to the south pole of the Milky Way.

 

Magnetic field: region of space where they can detect the magnetic forces on each of its points.

 

Magnetocola: extension shaped flow formed by the solar wind as it is in the magnetosphere of a planet.

 

Magnetopausa: magnetic boundary between the magnetosphere and the solar wind. It is located within the shock wave.

 

Magnetosfera: dominated region of space where the magnetic field instead of a planet beyond produced by the solar wind.

 

Magnitude apparent: magnitude of an object far from the Earth. The apparent magnitude higher owns the Sun.

 

Magnitude B: indicates the magnitude of an object in a band centered at 440 nanometers photometric.

 

Magnitude blue: indicates the magnitude of an object in a band centered at 440 nanometers photometric.

 

Magnitude visual: magnitude measured by the eyes of a person or team having yellow filters.

 

Magnitude yellow: size measured by the eyes of a person or team with yellow filters.

 

Magnitude: scale for measuring the brightness of a body over others. The scale of values was created by the Greek Hiparco.

 

Manto: layer of the Earth between the outer layer and the bark. It is divided into two parts: internal and external mantle.

 

Mare: name is known to the basalt plains that are in the face of the Moon. They are different due to their dark color.

 

Megaton: unity of explosive force equivalent to a million tons of TNT. It is used to describe the destructive capacity of a gun.

 

Meteor: light that emits a meteroide when going through the atmosphere. Commonly called Star fleeting.

 

Meteroide: small rocky body space. SIf penetrates the atmosphere is called a meteor.

 

Microwave: electromagnetic radiation that lies between 1 millimeter and 30 centimeters.

 

Miligal: means the unit of measurement of the gravitational acceleration for the thousandth of a Gal.

 

Milky way: luminous spiral band formed by planets, stars and clouds of gas. This is the galaxy where Earth.

 

Molecule: group of atoms linked by chemical bonds. They feature to be amended with the heat.

 

Moon: natural satellite of a planet with a minimum diameter of 15 kilometers. And also the name of the only natural satellite of Earth.

 

Moons pastors: Name of small satellites that influence the orbits of planetary rings.

 

Movement itself: displacement angle of a star with respect to elements far removed from it.

 

Moving toward the blue: moving an object that is close to the Earth. It is based on the relativistic Doppler effect.

 

Moving toward the red: moving an object moving away from Earth. It is based on the relativistic Doppler effect.

 

Muon: leptón loaded negatively but more volatile than an electron. It has a antipartícula call antimuón.

 

Nanometro: unit of length equal to the milmillonésima part of a meter.. It is used to measure the wavelength.

 

Nebula: cloud of dust and gas with a density greater than the interstellar medium. It is the place where stars are born.

 

Neutrino: particle subatómica produced by nuclear reactions in stars. It affected by the weak nuclear force.

 

Neutron star: Star gas composed of neutrons. They usually appear after the star has exploded by the loss of energy from its nucleus.

 

Neutron: particle of the nucleus of the atom that has zero load. It is composed of three quarks. Its mass is equivalent to that of the proton.

 

Nova quick: type of star that takes about 100 days in decreasing luminosity when they reach the maximum degree.

 

Nova slow: type of star that takes more than 150 days in decreasing luminosity when they reach the maximum degree.

 

Nova: Star increases its brightness before returning to normalcy. They are weaker than supernovae.

 

Nuclear fusion: action by the two atomic nuclei together to create a new kernel heavier.

 

Oort cloud: nuclei of comets in the solar system which describe circular orbits the Sun. Receive this name astronomer Jan Hendrik Oort.

 

Orbit: trajectory of an object that revolves around another object or an effect of gravity and speed.

 

Parallax stellar: method to determine the distance from a star. It is half the angle of displacement of a hypothetical star when the Earth moves.

 

Pársec: unit length in Astrophysics equivalent to 3.26 light years. Its name comes from English parallax of one arc second (parallax second arc).

 

Particle: body with a diameter less than 500 microns with mass. It is a key component of nature.

 

Periapsis: ecliptic point of an orbit closer to a planet. Also named periastro.

 

Periastro: in a binary star, the point where the two stars are more together. It is also the point at which an orbit is closer to a planet.

 

Perigee: minimum distance between the Earth and the object that orbits around it. His point opposite is called apogee.

 

Perihelio: point near the orbit of a star on the status of the Sun. According to the laws of Kepler's at this point the speed of transmission is highest.

 

Plage: name that is known to those bright regions that can be seen in the chromosphere.

 

Planet: celestial body that revolves around the sun or another star that shines through light reflection.

 

Plasma: low-density gas where the atoms are charged, it ionizan. It is considered the fourth state of matter.

 

Polar cap: very thick cover of clouds that sometimes can be divisible from the Planet Mars.

 

Polarization: ownership of the light, which is polarized when it takes precedence angle.

 

Population stellar: a set of stars that possess the same characteristics, composition and age.

 

Positron: antipartícula electron with the same load and the same mass but it is positive. Paul Dirac predicted its existence.

 

Preones: objects smaller than quarks and leptones. They are considered substructures of quarks.

 

Process triple-alfa: fusion of three helium particles of the red giant stars in order to create carbon.

 

Protoestrella: phase of the creation of a star after the fragmentation of the cloud of hydrogen, helium and dust and prior to nuclear reactions that occur within them.

 

Protogalaxia: huge gas cloud from which they formed a galaxy. Their size is far superior to that of a mature galaxy.

 

Proton: particle with a positive charge composed of three quarks.

 

Protosol: gas field that was the one that gave rise to the Sun makes about 4,500 million years ago.

 

Pulsar: estrella compuesta por gas de neutrones. Press: Star gas composed of neutrons. The antiprotónn is equivalent antimatter.

 

Quantum mechanics: part of physics which is responsible for explaining the behavior of matter at very small scales.

 

Quark: subpartícula to form protons and neutrons. They are the main constituents of matter. You can also call cuark.

 

Quasar: stellar object extragaláctico shaped and emits bright. You may see writing as cuasar.

 

Radiation belt: regions of the magnetosphere filled with charged particles. Also called Van Allen belts.

 

Radiation synchtron: it is itself of charged particles that move at high speed in a magnetic field.

 

Radiation: emission of energy in the form of waves or particles through the vacuum or a natural environment.

 

Radio lobe: a wealth of very luminous plasma that is generated within a radiofuente.

 

Radio wave: electromagnetic wave frequency and with less energy than a visible spectrum. They are also known as Hertzian waves.

 

Radio: electromagnetic waves with less frequency and higher energy and wavelength that a visible spectrum.

 

Radioactive transport: energy transport in the interior of a star that is transferred through photons.

 

Radiofuente twofold: active galaxy with two radio lobes. They are located on both sides of an elliptical galaxy.

 

Radiogalaxia: active galaxy that emits radio waves. The issue is due to radiation Synchtron.

 

Radioondas: type of electromagnetic waves which have a lower frequency and energy that a visible spectrum.

 

Recession: removal of galaxies. The speed of this movement is proportional to the distance.

 

Red dwarf: in the diagram Hertzsprung-Russell is a star that has a long life but little mass.

 

Red giant: Diagram Hertzsprung-Russell star with temperature below the Sun but with a greater diameter.

 

Reflection: reflection of light beams that affect an area. The angle of the incident and reflected rays are equal.

 

Refractive: change of direction from light to move from one medium to another. It originates with the change of velocity of the wave.

 

Region H I: kind of cloud of interstellar hydrogen neutral density and very low temperatures.

 

Regolito: remnants of rocks surrounding the moon and other planets, satellites and asteroids. They appear due to erosion cosmic.

 

Relativity theory: enunciated by Albert Einstein in which it appears that the motion and gravity affect the space and time. It is divided into the Special Theory of relativity theory and general relativity.

 

Relaxation violent: action by several bodies returned to their steady state. such the stars in galaxies.

 

Roche Limit: closest point where a moon can orbit around a planet without being destroyed by tidal forces.

 

Roche lobe: region of space around two stars with a contact point that has great gravitational force. Tiene forma de ocho. Have form of eight.

 

Ropes flow: it is those magnetic forces that can be found at iosfera Venus.

 

Rotation: drawing of a body around its axis. The line that is made by this movement is called axis of rotation.

 

Revolution: orbit of a star that is surrounding another. Also known by this name to a cycle of this movement.

 

Rupes: term which is known to the slopes, cliffs and other accidents that exist on the surface of planets.

 

Satellite: body orbiting around a planet. It is also used to name the moons and some spacecraft.

 

Second arc: unit that measures angles between objects which are located in the sky.

 

Shock wave: most extensive part of the magnetosphere. Here the solar wind is slowed by the magnetic field.

 

Sidereal Day: time it takes a planet in a turn on its axis. It is measured from the onset of a star until it reappear.

 

Size angular: size of an object in the sky as far corner. It d