main webpage W Topic Planet Astronomy and Astrophysics • Vol 668 Searching for Hα-emitting sources in the gaps of five transitional disks 2022 Context. (Pre-)Transitional disks show gaps and cavities that can be related to ongoing planet formation. According to theory, young embedded planets can accrete material from the circumplanetary and circumstellar disks and can be detected using accretion tra… Article Open Planet Open Article Page

Planet

Astronomical object A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk. Planets grow in this disk by the gradual accumulation of material driven by gravity, a process called accretion. The Solar System has at least eight planets: the terrestrial planets Mercury, Venus, Earth and Mars, and the giant planets Jupiter, Saturn, Uranus and Neptune. These planets each rotate around an axis tilted with respect to its orbital pole. Critical Symbolic Virtual Narrative Open Planet Open Article Page

Exploring foci of: Astronomy and Astrophysics • Vol 668 Searching for Hα-emitting sources in the gaps of five transitional disks 2022 Context. (Pre-)Transitional disks show gaps and cavities that can be related to ongoing planet formation. According to theory, young embedded planets can accrete material from the circumplanetary and circumstellar disks and can be detected using accretion tracers, such as the H α emission line. Aims. We aim to detect accreting protoplanets within the cavities of five (pre-)transitional disks through adaptive-optics(AO)-assisted spectral angular differential imaging in the optical regime. Methods. We performed simu… Open Article Page

Click Planet Vs: Physics Astrophysics Protoplanetary Disk Angular Diameter Astronomy Open Article Page

Explore Planet W Topic Planet Astronomy and Astrophysics • Vol 668 Searching for Hα-emitting sources in the gaps of five transitional disks 2022 Context. (Pre-)Transitional disks show gaps and cavities that can be related to ongoing planet formation. According to theory, young embedded planets can accrete material from the circumplanetary and circumstellar disks and can be detected using accretion tra… Article Critical Symbolic Virtual Narrative Open Planet Open Article Page