Bitcoin Forum
December 14, 2017, 09:48:48 PM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: 天文学家发现罕见的五星系统  (Read 286 times)
v0yager
Hero Member
*****
Offline Offline

Activity: 518



View Profile
July 09, 2015, 02:06:08 PM
 #1

天文学家在大熊星座发现了一个罕见的五星相连系统(如图所示),五颗恒星有两对是双星系统,另外一个是双星系统的伴星,而其中一个双星系统则是密接双星。他们的论文已发表在预印本网站arxiv上。所谓的密接双星是指两颗恒星的轨道是如此相近以至共享了外层大气。两对双星系统围绕着一个共同的引力中心运动,但相距距离超过了冥王星与太阳的距离,它们的轨道都在同一平面上。

Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!