Glossary term: Desplazamiento al rojo
Description: Este término puede referirse a tres efectos diferentes: el desplazamiento al rojo Doppler, el cosmológico o el gravitacional. El desplazamiento al rojo Doppler es lo contrario del desplazamiento al azul; en el caso del desplazamiento al rojo, la fuente que emite la radiación electromagnética se aleja del observador, por lo que la longitud de onda de la radiación electromagnética se alarga hacia longitudes de onda más largas (más rojizas). Esto es similar al efecto Doppler en el contexto de las ondas sonoras. El desplazamiento al rojo cosmológico es el resultado de que la radiación electromagnética emitida por una fuente se alarga a longitudes de onda mayores debido a la expansión física del espacio, a diferencia del desplazamiento al rojo Doppler, que se debe al movimiento relativo. El desplazamiento al rojo gravitacional se refiere al efecto por el cual la longitud de onda de la radiación electromagnética emitida por una fuente se alarga a longitudes de onda mayores, o más bien los fotones asociados pierden energía al intentar salir de una región (pozo gravitacional) donde la gravedad es más fuerte.
Related Terms:
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".
If you notice a factual or translation error in this glossary term or definition then please get in touch.
In Other Languages
- Árabe: الانزياح الأحمر
- Alemán: Rotverschiebung
- Inglés: Redshift
- Francés: Décalage vers le rouge
- Italiano: redshift
- Japonés: 赤方偏移 (external link)
- Portugués de Brasil: Desvio para o vermelho
- Chino simplificado: 红移
- Chino tradicional: 紅移
Related Media
SDSS Redshift Map
Caption: This image shows a map of the distribution of galaxies and is based on redshift data from the Sloan Digital Sky Survey (SDSS). Redshift measurements provides information on the distances, positions and motions of the galaxies.
The Earth is located at the center of the image, and each dot represents a galaxy. The outer circle represents a ""distance"" of about 2 billion light years. The idea of distance in cosmology is complex because the usual measurement of distance is the separation between two points in space at the same time. However, because of the speed of light, the further a distance, the farther back in time we are observing. The numbers on the outer circle are Right Ascension coordinates mapped onto a flat circle, and provides information on the position of the galaxies on the sky. The colours used represent the ages of the stars in the galaxies, the redder, more strongly clustered points represent galaxies comprising of older stars. The dark wedges that do not contain any dots are regions that were not mapped by the SDSS due to dust from the Milky Way galaxy obscuring the view.
Credit: M. Blanton and Sloan Digital Sky Survey
credit link
License: CC-BY-4.0 Creative Commons Reconocimiento 4.0 Internacional (CC BY 4.0) icons
