Credit & Copyright: Dan Bartlett
Explanation:
Dwarf galaxies
NGC 147
(left) and
NGC 185
stand side by side in this sharp telescopic portrait.
The two are not-often-imaged satellites of M31, the
great spiral Andromeda Galaxy,
some 2.5 million light-years away.
Their separation on the sky, less than one degree across a pretty
field of view, translates to only about 35 thousand light-years at Andromeda's
distance, but Andromeda itself is found well outside this frame.
Brighter and more famous satellite galaxies of Andromeda,
M32 and M110, are
seen closer to the great spiral.
NGC 147
and NGC 185
have been identified as binary galaxies, forming
a gravitationally stable binary system.
But recently discovered faint
dwarf galaxy Cassiopeia II
also seems to
be part of their system, forming a gravitationally bound group
within Andromeda's intriguing population of small
satellite
galaxies.
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:
M 31 - галактика, карликовая
Публикации со словами: M 31 - галактика, карликовая | |
См. также:
Все публикации на ту же тему >> |