Hola amigos: A VUELO DE UN QUINDE EL BLOG., la Agencia Espacial NASA, nos informa que el Telescopio Espacial Hubble, ha detectado una pizca de brillo cósmico es una galaxia enana compacta azul conocida como Markarian 209. Las galaxias de este tipo son de color azul en tonos, de tamaño compacto, rico en gas, y baja en elementos pesados. Se utilizan a menudo por los astrónomos para estudiar la formación de estrellas, ya que sus condiciones son similares a las que se cree que existen en el Universo temprano.
Hubble Sweeps a Messy Star Factory
This sprinkle of cosmic glitter is a blue compact dwarf galaxy known as
Markarian 209. Galaxies of this type are blue-hued, compact in size, gas-rich,
and low in heavy elements. They are often used by astronomers to study star
formation, as their conditions are similar to those thought to exist in the
early Universe.
Markarian 209 in particular has been studied extensively. It is filled with
diffuse gas and peppered with star-forming regions towards its core. This image
captures it undergoing a particularly dramatic burst of star formation, visible
as the lighter blue cloudy region towards the top right of the galaxy. This
clump is filled with very young and hot newborn stars.
This galaxy was initially thought to be a young galaxy undergoing its very
first episode of star formation, but later research showed that Markarian 209 is
actually very old, with an almost continuous history of forming new stars. It is
thought to have never had a dormant period — a period during which no stars were
formed — lasting longer than 100 million years.
The dominant population of stars in Markarian 209 is still quite young, in
stellar terms, with ages of under 3 million years. For comparison, the sun is
some 4.6 billion years old, and is roughly halfway through its expected
lifespan.
The observations used to make this image were taken using Hubble’s Wide Field
Camera 3 and Advanced Camera for Surveys, and span the ultraviolet, visible, and
infrared parts of the spectrum. A scattering of other bright galaxies can be
seen across the frame, including the bright golden oval that could, due to a
trick of perspective, be mistaken as part of Markarian 209 but is in fact a
background galaxy.
European Space Agency
ESA/Hubble & NASA Acknowledgement: Nick
Rose
NASA
Guillermo Gonzalo Sánchez Achutegui
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