TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A stage in the evolution of a young star after it has fragmented from a gas cloud but before it has collapsed sufficiently for nuclear reactions to begin.  2, record 1, English, - protostar

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If the protostar can reach a temperature of 10 million degrees kelvin, the hydrogen fusion process will start and it will become an actual star.  3, record 1, English, - protostar

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

An explosive event in the interior of a low-mass star(less than two solar masses) marking the start of helium burning when all the hydrogen available for nuclear fusion in the core has been exhausted.  2, record 2, English, - helium%20flash

Record number: 2, Textual support number: 1 CONT

In a degenerate gas ... the pressure doesn’t depend on temperature and no such safety valve exists. The conversion of helium to carbon takes place very quickly. We call this sudden release of energy the helium flash.  3, record 2, English, - helium%20flash

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Explosion se produisant dans le cœur d'une étoile de faible masse (moins de 2 masses solaires) marquant le début de la fusion de l'hélium en carbone une fois que tout l'hydrogène contenu dans le noyau de l'étoile et permettant la fusion nucléaire s'est épuisé.  2, record 2, French, - flash%20de%20l%27h%C3%A9lium

Record number: 2, Textual support number: 1 CONT

L'évolution [de l'étoile] continue : le cœur d'hélium brûle vite, c'est le flash de l'hélium : puis le comportement évolutif ressemble à celui de l'épuisement de l'hydrogène.  3, record 2, French, - flash%20de%20l%27h%C3%A9lium

Record number: 2, Textual support number: 1 OBS

Pluriel : des flashs ou des flashes.  4, record 2, French, - flash%20de%20l%27h%C3%A9lium

Record number: 2, Textual support number: 2 OBS

flashs (pl.) : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).  5, record 2, French, - flash%20de%20l%27h%C3%A9lium

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 OBS

The Strategic Defense Initiative(SDI) was a proposal by U. S. President Ronald Reagan on March 23, 1983 to use ground and space-based systems to protect the United States from attack by strategic nuclear ballistic missiles. The initiative focused on strategic defense rather than the prior strategic offense doctrine of mutual assured destruction(MAD). Though it was never fully developed or deployed, the research and technologies of SDI paved the way for some anti-ballistic missile system of today. The Strategic Defense Initiative Organization(SDIO) was set up in 1984 within the United States Department of Defense to oversee the Strategic Defense Initiative. It gained the popular name Star Wars after the 1977 film by George Lucas. Under the administration of President Bill Clinton in 1993, its name was changed to the Ballistic Missile Defense Organization(DMDO) and its emphasis was shifted from national missile defense to theater missile defense; from global to regional coverage. BMDO was renamed to the Missile Defense Agency in 2002.  1, record 3, English, - Strategic%20Defense%20Initiative

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

L'Initiative de défense stratégique (IDS), dite aussi «Guerre des étoiles», est un projet lancé le 23 mars 1983 par le président Ronald Reagan durant la guerre froide compte tenu d'une part de la poussée soviétique depuis la moitié des années 1970 et de la volonté des États-Unis à vouloir rester inviolables et invincibles sur leur sol et dans leurs zones protégées. «Pour contrer l'horrible menace des missiles soviétiques [...] un programme ambitieux est mis à l'étude pour protéger les États-Unis par un bouclier spatial, identifiant et anéantissant tout missile venu de la haute atmosphère».  1, record 3, French, - Initiative%20de%20d%C3%A9fense%20strat%C3%A9gique

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 OBS

La Iniciativa de Defensa Estratégica [SDI, por su sigla en inglés], comúnmente conocida como Guerra de las Galaxias (Star Wars) por la popular película de ciencia ficción de su tiempo, fue un sistema propuesto por el presidente estadounidense Ronald Reagan el 23 de marzo de 1983 para utilizar sistemas basados en tierra y en el espacio a fin de defender los Estados Unidos contra un ataque nuclear con misiles balísticos intercontinentales. La iniciativa estaba enfocada más hacia la defensa estratégica que hacia una política ofensiva como la anterior teoría de la Destrucción Mutua Asegurada o MAD.  1, record 3, Spanish, - Iniciativa%20de%20Defensa%20Estrat%C3%A9gica

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

However, in an interview with the Soviet press, Reagan proposed eliminating nuclear weapons before deploying the missile shield; in other reports he suggested sharing the Star Wars technology with the Soviets.  3, record 4, English, - Star%20Wars%20technology

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Solar physics is the study of our Sun. It is a branch of astrophysics that specializes in exploiting and explaining the detailed measurements that are possible only for our closest star. It intersects with many disciplines of pure physics, astrophysics, and computer science, including fluid dynamics, plasma physics including magnetohydrodynamics, seismology, particle physics, atomic physics, nuclear physics, stellar evolution, space physics, spectroscopy, radiative transfer, applied optics, signal processing, computer vision, and computational physics.  2, record 5, English, - solar%20physics

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Étude de l’étoile Soleil, de son atmosphère, de son activité magnétique, des éruptions, des flares, etc.  2, record 5, French, - physique%20solaire

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A signal induced by the RF [radio frequency] excitation of the nuclear spins, and that decreases exponentially without external influence at a characteristic time constant T2 [star]:.  3, record 6, English, - free%20induction%20decay

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Les protons, qui précessent en phase pendant la durée de l'impulsion de radiofréquence, précessent librement dès que celle-ci cesse. Ils se déphasent rapidement et le signal induit recueilli par l'antenne décroît, lui aussi rapidement : c'est le signal de précession libre [...]  3, record 6, French, - signal%20de%20pr%C3%A9cession%20libre

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

The stellar explosions are among the most energetic events in the universe ... They are the dominant source of all elements in the periodic table heavier than oxygen ... The dynamics of an exploding star, involving things like fluid flow and radiation transport, are described in equations known as partial differential equations.  2, record 7, English, - stellar%20explosion

Record number: 7, Textual support number: 2 CONT

A supernova is a violent stellar explosion which destroys a star, while ejecting the products of nuclear burning into the gas between stars. The energy for some supernova explosions comes from the collapse of a massive star to a compact neutron star, with the mass of the Sun, but the size of a city. Elements out of which the Earth is formed had their origin in ancient supernova explosions in our own Milky Way Galaxy.  3, record 7, English, - stellar%20explosion

Record number: 7, Textual support number: 1 OBS

Part of the information contained in the English module of this record was provided by students of the Introduction to Terminology and Terminography class, section A, U. of Ottawa, Fall 2004.  4, record 7, English, - stellar%20explosion

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Phénomène de l'expansion gazeuse plus ou moins violente qui touche certaines zones d'une étoile ou l'étoile entière. Dans le premier cas, le phénomène relève de l'activité normale de chaque étoile, alors que, dans le second, il s'agit d'un événement exceptionnel.  1, record 7, French, - explosion%20stellaire

Record number: 7, Textual support number: 1 OBS

Si l'explosion stellaire n'est pas très violente, l'étoile observée prend le nom de «flare star». Dans le cas contraire, on assiste à la naissance d'une nova ou d'une supernova.  1, record 7, French, - explosion%20stellaire

Record number: 7, Textual support number: 2 OBS

Certains renseignements inclus dans le module français de cette fiche ont été fournis par les étudiants du cours d'Initiation à la terminologie et à la terminographie, section A, U. d'Ottawa, automne 2004.  2, record 7, French, - explosion%20stellaire

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 CONT

Un astrónomo [...] captó la imagen de una estrella en el momento de su explosión, y el Instituto de Astrofísica de Canarias (IAC) piensa que puede ser "un nuevo tipo de explosión estelar". La imagen captada permite observar el "eco de luz" alejándose de la estrella [...] El fenómeno del "eco de luz" captado por los astrónomos es muy poco frecuente, y se produce cuando tras la explosión de una estrella, la energía producida crea una burbuja de luz que se expande a gran velocidad y que en el caso de esta estrella provocó que su luminosidad aumentara 10.000 veces en apenas unas semanas, explica el IAC.  1, record 7, Spanish, - explosi%C3%B3n%20estelar

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

Hot dense star of low luminosity.  3, record 8, English, - white%20dwarf

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White dwarfs are the final phase in the evolution of a low-mass star and result from gravitational collapse following the exhaustion of nuclear fuel.  4, record 8, English, - white%20dwarf

Record number: 8, Textual support number: 2 CONT

Best known of all white dwarfs is Sirius B, companion to Sirius ... Sirius B has a radius of only 10 (to the fourth power) km, less than that of the earth, but a mass similar to that of the sun.  4, record 8, English, - white%20dwarf

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Étoile de très faible luminosité très dense et très chaude.  2, record 8, French, - naine%20blanche

Record number: 8, Textual support number: 1 CONT

Le compagnon de l'étoile brillante Sirius est une naine blanche, d'une masse comparable à celle du Soleil, mais dont le rayon est cent fois plus petit; [...]  3, record 8, French, - naine%20blanche

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

Estrella de temperatura superior a los 10 000k, densidad del orden de 10 (exponente 5) g/cm (exponente 3), pequeña luminosidad (magnitud visual absoluta entre 10 y 15), y cuyo radio es aproximadamente como el de la Tierra.  3, record 8, Spanish, - enana%20blanca

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

The rapid implosion of a star or other astronomical body from its initial, normal size to a size hundreds of thousands of times smaller.  2, record 9, English, - gravitational%20collapse

Record number: 9, Textual support number: 1 CONT

’gravitational collapse’ usually refers to the sudden collapse of the core of a massive star at the end of nuclear burning, when its internal gas pressure can no longer support its weight.... The eventual degree of gravitational collapse is determined by the mass that remains. The three most likely end-products(in order of increasing mass) are white dwarfs, neutron stars, and black holes.  3, record 9, English, - gravitational%20collapse

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

C'est l'astrophysicien indien Chandrasekhar qui prouva qu'au dessus d'une masse limite qui porte son nom, de l'ordre d'une masse solaire (...), aucun corps froid ne peut échapper à l'effondrement gravitationnel.  1, record 9, French, - effondrement%20gravitationnel

Record 9,  Textual support,  Spanish