Credit & Copyright: Ken Crawford
Explanation:
NGC 2685
is a confirmed polar ring galaxy - a rare type
of galaxy with
stars, gas and dust orbiting in rings perpendicular to the plane of
a flat galactic disk.
The bizarre configuration could be
caused by the chance
capture of
material from another galaxy by a disk galaxy,
with the captured debris strung out in a rotating ring.
Still, observed
properties of NGC 2685
suggest that the rotating ring structure is remarkably old and stable.
In this
sharp view of the peculiar system also known as
Arp
336 or the Helix galaxy, the strange,
perpendicular rings
are easy to trace as they pass in front of the galactic disk,
along with other disturbed outer structures.
NGC 2685 is about 50,000 light-years across and
40 million light-years away in the constellation
Ursa Major.
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 |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
галактика - кольцевые структуры
Публикации со словами: галактика - кольцевые структуры | |
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