Hola Amigos: A VUELO DE UN QUINDE EL BLOG., hemos recibido información de la Agencia Espacial NASA.Esta imagen del telescopio espacial de la NASA / ESA Hubble muestra una vista de canto de la galaxia espiral NGC 5023. Debido a su orientación no podemos apreciar sus brazos espirales, pero podemos admirar el elegante perfil de su disco. La galaxia se encuentra más de 30 millones de años luz de distancia de nosotros.
Hubble Views a Galaxy on Edge
This NASA/ESA Hubble Space Telescope image shows an edge-on view of the
spiral galaxy NGC 5023. Due to its orientation we
cannot appreciate its spiral arms, but we can admire the elegant profile of its
disk. The galaxy lies over 30 million light-years away from us.
NGC 5023 is part of the M51 group of galaxies. The brightest galaxy in this
group is Messier 51, the Whirlpool Galaxy, which has been captured by Hubble
many times. NGC 5023 is less fond of the limelight and seems rather unsociable
in comparison — it is relatively isolated from the other galaxies in the
group.
Astronomers are particularly interested in the vertical structure of disks
like these. By analyzing the structure above and below the central plane of the
galaxy they can make progress in understanding galaxy evolution. Astronomers are
able to analyze the distribution of different types of stars within the galaxy
and their properties, in particular how well evolved they are on the
Hertzsprung–Russell Diagram — a scatter graph of stars that shows their
evolution.
NGC 5023 is one of six edge-on spiral galaxies observed as part of a study
using Hubble’s Advanced Camera for Surveys. They study
this vertical distribution and find a trend which suggests that heating of the
disc plays an important role in producing the stars seen away from the plane of
the galaxy.
In fact, NGC 5023 is pretty popular when it comes to astronomers, despite its
unsociable behavior. The galaxy is also one of 14 disk galaxies that are part of
the GHOSTS survey — a survey which uses Hubble data to
study galaxy halos, outer disks and star clusters. It is the largest study to
date of star populations in the outskirts of disk galaxies.
The incredible sharp sight of Hubble has allowed scientist to count more than
30,000 individual bright stars in this image. This is only a small fraction of
the several billion stars that this galaxy contains, but the others are too
faint to detect individually even with Hubble.
European Space Agency
Credit:
ESA/NASA
NASA
Guillermo Gonzalo Sánchez Achutegui
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