Back

Stellar encounter

Scholz's Star (red star in the center) with VPHAS+ Image Credit: ESO VPHAS+
Scholz's Star (red center dot) passed within 55,000 light years of Earth around 70,000 years ago.[1]
A star with a protoplanetary disk near a massive hot star. The disk is being photoevaporated due to the heat from the large star.

A stellar encounter is an astronomical event in which two or more stars get within a close distance of each other.[2] Encounters between stars outside dense regions are rare, but they are more frequent in regions dense with stars such as star clusters or multiple star systems. Impacts between two stars do happen but are extremely rare events.[3] Such stellar encounters can caused both star systems to exchange materials such as cosmic dust and planets. After such encounters, especially for stars with protoplanetary disk, both systems will come out with material from the other system.[4] Stars with protoplanetary disk in stellar rich regions undergo background heating, disk truncation and photoevaporation. Theses effects can halt the growth of gas giant planets during their planetary formation phase or not form any gas giant planets at all.[5]

  1. ^ "A passing star: our Sun's near miss - NASA Science". 2019-02-26. Retrieved 2025-04-10.
  2. ^ "Close encounters of the stellar kind". www.esa.int. Retrieved 2025-04-10.
  3. ^ "stellar encounter". astro.vaporia.com. Retrieved 2025-04-10.
  4. ^ "Stellar Flybys and Captured Planets". web.physics.utah.edu. Archived from the original on 2022-10-04. Retrieved 2025-04-10.
  5. ^ Ndugu, N.; Abedigamba, O. P.; Andama, G. (May 2022). "Planet population synthesis: the role of stellar encounters". Monthly Notices of the Royal Astronomical Society. 512 (1): 861–873. doi:10.1093/mnras/stac569. ISSN 0035-8711. PMC 8924961. PMID 35308091.

Rich TVX News Network Site

Rich TVX News Network Info

© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search