Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Detection of Black Holes01:10

Detection of Black Holes

2.4K
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
2.4K
Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

2.5K
No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape...
2.5K
Kepler's Third Law of Planetary Motion01:18

Kepler's Third Law of Planetary Motion

4.0K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
4.0K
Kepler's First Law of Planetary Motion01:10

Kepler's First Law of Planetary Motion

5.1K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
5.1K
Kepler's Second Law of Planetary Motion01:29

Kepler's Second Law of Planetary Motion

4.9K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
4.9K
Conservation of Angular Momentum: Application01:18

Conservation of Angular Momentum: Application

11.9K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
11.9K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Aerosols and hydrocarbons in the atmosphere of a white dwarf planet.

Nature·2026
Same author

Uncovering the rapidly evolving orbits of the dynamic TOI-201 system.

Science advances·2026
Same author

Synthesis of Azatide Dipeptide Analogs and Their Stability and Reactivity in 98% <i>w</i>/<i>w</i> Sulfuric Acid.

Molecules (Basel, Switzerland)·2026
Same author

Stability and Reactivity of Alternative Nucleobases in Concentrated Sulfuric Acid.

Molecules (Basel, Switzerland)·2026
Same author

Discovery of the most compact 3+1-type quadruple star system TIC 120362137.

Nature communications·2026
Same author

Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903.

Science (New York, N.Y.)·2026

Video Experimental Relacionado

Updated: Dec 8, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.8K

Un planeta gigante en tránsito por una enana blanca

Andrew Vanderburg1,2, Saul A Rappaport3, Siyi Xu4

  • 1Department of Astronomy, University of Wisconsin-Madison, Madison, WI, USA. avanderburg@wisc.edu.

Nature
|September 17, 2020
PubMed
Resumen

Los astrónomos han encontrado un planeta del tamaño de Júpiter orbitando una enana blanca. Este descubrimiento sugiere que los planetas gigantes pueden sobrevivir órbitas cercanas alrededor de enanas blancas, desafiando suposiciones anteriores.

Más Videos Relacionados

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

19.9K
Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.8K

Videos de Experimentos Relacionados

Last Updated: Dec 8, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.8K
Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

19.9K
Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.8K

Área de la Ciencia:

  • Astronomía y astrofísica
  • Ciencias exoplanetarias
  • Evolución estelar

Sus antecedentes:

  • Miles de exoplanetas descubiertos orbitan estrellas que se convierten en gigantes rojas y luego enanas blancas.
  • Los planetas que orbitan cerca de las estrellas son engullidos durante la fase de gigante roja.
  • La evidencia de escombros rocosos alrededor de las enanas blancas sugiere planetas interrumpidos, pero los planetas masivos intactos no fueron detectados en órbitas cercanas.

Objetivo del estudio:

  • Para investigar la posibilidad de planetas masivos intactos sobreviviendo en órbitas cercanas alrededor de enanas blancas.
  • Para analizar el tránsito de un candidato a planeta gigante alrededor de la enana blanca WD 1856+534.
  • Para entender la dinámica orbital y los mecanismos de supervivencia de los planetas alrededor de las enanas blancas.

Principales métodos:

  • Observación del oscurecimiento periódico de la enana blanca WD 1856+534.
  • Modelado el tránsito del planeta candidato a través de la estrella.
  • Análisis del tamaño y masa del candidato a planeta en relación con Júpiter.
  • Comparación con modelos de evolución de envoltura común para compañeras estelares / subestelares cercanas.

Principales resultados:

  • Detección de un candidato a planeta gigante, comparable en tamaño a Júpiter, que transita por WD 1856+534 cada 1,4 días.
  • Se estima que la masa del planeta candidato no es más de 14 veces la de Júpiter.
  • El período orbital y la baja masa del planeta candidato hacen que la evolución de la envolvente común sea una explicación improbable para su órbita cercana.
  • Los hallazgos sugieren que los planetas gigantes pueden dispersarse en órbitas estrechas alrededor de las enanas blancas sin interrupciones de marea.

Conclusiones:

  • Los planetas gigantes pueden sobrevivir en órbitas cercanas alrededor de las enanas blancas, contrariamente a las expectativas anteriores.
  • El sistema WD 1856+534 proporciona evidencia de que los mecanismos de dispersión pueden colocar planetas masivos en órbitas estrechas sin interrupción.
  • Este descubrimiento motiva nuevas búsquedas de planetas más pequeños en tránsito alrededor de enanas blancas.