Rambler's Top100Astronet    
  по текстам   по ключевым словам   в глоссарии   по сайтам   перевод   по каталогу
 

APOD: 2020 August 14 Б NGC 5189: An Unusually Complex Planetary Nebula
<< Yesterday 14.08.2020 Tomorrow >>
APOD: 2020 August 14 Б NGC 5189: An Unusually Complex Planetary Nebula
Credit & Copyright: NASA, ESA, Hubble, HLA; Reprocessing & Copyright: Jesцs M. Vargas
Explanation: Why is this nebula so complex? When a star like our Sun is dying, it will cast off its outer layers, usually into a simple overall shape. Sometimes this shape is a sphere, sometimes a double lobe, and sometimes a ring or a helix. In the case of planetary nebula NGC 5189, however, besides an overall "Z" shape (the featured image is flipped horizontally and so appears as an "S"), no such simple structure has emerged. To help find out why, the Earth-orbiting Hubble Space Telescope has observed NGC 5189 in great detail. Previous findings indicated the existence of multiple epochs of material outflow, including a recent one that created a bright but distorted torus running horizontally across image center. Hubble results appear consistent with a hypothesis that the dying star is part of a binary star system with a precessing symmetry axis. NGC 5189 spans about three light years and lies about 3,000 light years away toward the southern constellation of the Fly (Musca).

<<  Август  >>
Пн Вт Ср Чт Пт Сб Вс
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            
1995   1996   1997
1998   1999   2000
2001   2002   2003
2004   2005   2006
2007   2008   2009
2010   2011   2012
2013   2014   2015
2016   2017   2018
2019   2020   2021
2022   2023   2024
Январь
Февраль
Март
Апрель
Май
Июнь
Июль
Август
Сентябрь
Октябрь
Ноябрь
Декабрь
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Русский текст
Based on Astronomy Picture Of the Day
Публикации с ключевыми словами: planetary nebula - Планетарная туманность
Публикации со словами: planetary nebula - Планетарная туманность
См. также:
Все публикации на ту же тему >>

Оценка: 5.0 [голосов: 4]
 
О рейтинге
Версия для печати Распечатать

Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам

Комментарии, вопросы? Пишите: info@astronet.ru или сюда

Rambler's Top100 Яндекс цитирования