Glossary term: Remanescentes estelares
Description: "Remanescentes estelares" é o termo para anãs brancas, estrelas de nêutrons e buracos negros de massa estelar. Eles representam o estágio final da evolução estelar após uma estrela ter terminado a queima de hidrogênio na sequência principal e evoluído para a fase gigante. Os remanescentes estelares são muito compactos em comparação com as estrelas. As anãs brancas (o maior tipo de remanescente estelar) têm aproximadamente uma massa solar de matéria em um objeto do tamanho da Terra. Os remanescentes estelares não geram calor a partir da fusão nuclear em seus núcleos. Em sistemas binários próximos, os remanescentes estelares podem ser a fonte de novas, supernovas Tipo Ia ou (se dois remanescentes estelares espiralarem um em direção ao outro e colidirem) explosões de ondas gravitacionais.
Related Terms:
- Binary Star
- Buraco negro
- Estrela gigante
- Hydrogen Fusion
- Sequência Principal
- Estrela de nêutrons
- Nova
- Nuclear Fusion
- Solar Mass
- Estrela
- Stellar Evolution
- Supernova
- Anã Branca
- Ondas gravitacionais
- Standard Candle
See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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In Other Languages
- Árabe: بقايا نجمية - بقايا النجوم
- Alemão: Kompakte Objekte
- Inglês: Stellar Remnants
- Francês: Vestiges stellaires
- Italiano: Residui stellari
- Chinês Simplificado: 恒星残骸
- Chinês Tradicional: 恆星殘骸
Related Media
Death of a massive star
Caption: A multi-wavelength image taken with telescopes on the Earth and in space of a neutron star within our neighbouring Small Magellanic Cloud galaxy. A neutron star (seen here as the blue spot surrounded by a red ring) is the final product of gravitational collapse, compression and explosion of a massive star, left embedded in its supernova remnant (in green).
Credit: ESO/NASA, ESA and the Hubble Heritage Team (STScI/AURA)/F. Vogt et al.
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License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons
Remnant of SN 1006
Caption: This image shows the remnant of the supernova SN 1006. This was probably the result of a white dwarf that accreted so much material from a binary companion star that the white dwarf exploded (this is called a Type 1a supernova by astronomers). This explosion happened several thousand years ago, however it took time for the light from this event to reach Earth, only arriving in the year 1006. This bright explosion was noticed by observers across the Earth and its appearance was noted in the records of many different societies.
Here we see the effect that supernova has had on its surroundings in the galaxy. The force of the explosion has blown a huge bubble in the surrounding interstellar gas with a hot shockwave at its edge. The image appears to be a simple color picture but it actually represents light far beyond what our eye can see. The blue is X-ray data from NASA's Chandra X-ray Observatory, the yellow and orange are data from optical telescopes and the red is detections in radio waves from the Very Large Array and the Green Bank Telescope. The bright blue of the outer shell shows the gas there is very hot and that the explosion produced energetic shock waves.
Credit: X-ray: NASA/CXC/Rutgers/G.Cassam-Chenai, Hughes et al.; Radio: NRAO/AUI/NSF/GBT/VLA/Dyer, Maddalena & Cornwell; Optical: Middlebury College/F.Winkler, NOAO/AURA/NSF/CTIO Schmidt & DSS
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License: PD Public Domain icons
The Crab Pulsar
Caption: At the heart of the Crab Nebula, situated approximately 6,500 light-years away in the constellation of Taurus, lies the Crab Nebula Pulsar. This is remnant of a massive star that exploded at the end of its life. This happened several thousand years ago but the light from this explosion only reached the Earth in the year 1054. This celestial event was viewed by people across the world with many different societies noting it in their records.
The Crab Nebula Pulsar rotates about 30 times per second and emits light in many different wavelengths, including the visible spectrum. It is roughly one and a half times the mass of the sun but the force of the explosion that formed it crammed this mass into a tiny space, roughly ten kilometres in radius.
This image is a composite of several observations conducted by the Gemini North observatory in Hawaii, USA. The pulsar can be seen at the center. The observations that this image was created from were taken over a period of five years. Data from 2009 is shown in blue and data from 2014 is shown in red. Over this time material has flowed away from the pulsar resulting in this colored ripple effect. Again the colors do not show real colors in the image, the ripples show the positions of the shockwaves as they moved away from the pulsar and hit into the surrounding gas.
Credit: International Gemini Observatory/NOIRLab/NSF/AUR, Jen Miller, Travis Rector, Mahdi Zamani & Davide de Martin
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License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons
