Una visión diferente para disfrutar de la magia del Universo
Astronomía - Cosmología - Astrofotografía - Astrofísica - Exploración Espacial

💫Nuevo!! Universo Mágico muestra los catálogos astronómicos más populares. Búscalos en la barra superior de navegación y lateral.

💫Los aficionados ya pueden escribir sobre astronomía. Date de alta como Autor en Universo Mágico Público.

 ðŸ’«Si eres Autor prueba la opción Nueva Entrada

💫Grupos en Facebook: Astroimaging - Stars in the Sky - Astronomy Plus - Astrophotographers

💫Hyperactive galaxy NGC 7673

Communities & Groups:     (New)  Space World Google+        Big Bang Facebook



The disturbed spiral galaxy NGC 7673 is ablaze with the light from millions of new stars. Each of its infant giant blue star clusters shines 100 times as brightly in the ultraviolet as similar immense star clusters in our own Galaxy. Scientists studying this object have two pressing questions: 'What has triggered this enormous burst of star formation and how will this galaxy evolve in the future?' Telltale patches of blue light are signs of the formation of millions of new stars in the tangled spiral galaxy NGC 7673. Each of the bluish areas in this image consists of immense star clusters containing thousands of young stars. These clusters lie on the spiral arms of NGC 7673 and so emphasise its somewhat ragged look. This image, taken from Earth orbit by the ESA/NASA Hubble Space Telescope in 1996 and 1997, also shows two other galaxies seen in the background of the image, to the left and right of NGC 7673. These galaxies are further away and so appear redder, due to their higher redshift, an effect caused by the expansion of the Universe.



The youngest blue stars in NGC 7673 are blazing with intense ultraviolet radiation. Each star cluster radiates 100 times more ultraviolet light than the famous Tarantula Nebula (30 Doradus), the largest star-forming region known in the local group of galaxies. Although this image is another attractive example of 'space art' from Hubble, there is also a purpose behind the beauty. According to Nicole Homeier from the European Southern Observatory in Munich, Germany and the University of Wisconsin-Madison, USA, 'NGC 7673 is a nearby example of the type of vigorous star formation that we think may have taken place in the early Universe. Our most pressing questions are: What has triggered this enormous burst of star formation and how will the galaxy evolve in the future?' There are two possible causes for this remarkable flurry of star formation: either a near miss or a collision between NGC 7673 and a nearby galaxy, or some unusual circumstances within the spiral galaxy itself.

For example, there may have been an overabundance of gas in the galaxy's disc that became gravitationally unstable, forming huge gas clumps that then burst into stellar 'flame'. For Homeier and her collaborators in America and Europe, the Hubble image offers new opportunities. 'For many years we have only been able to see the star-forming regions as fuzzy clumps from ground-based telescopes. Now, with Hubble we can study how these clumps may have originated and how this 'starburst galaxy' relates to the younger star-forming galaxies we see in the early Universe', she says. 'We hope to find the answer to our questions in the next few years.' NGC 7673 is located in the constellation of Pegasus at an approximate distance of 150 million light-years. This picture is composed of three images obtained with Hubble's Wide Field Planetary Camera 2 on 15 October 1996 and 11 October 1997. The three images were taken through a red filter (800 seconds), a green filter (1200 seconds) and an ultraviolet filter (2300 seconds) - shown in blue.

Credit: European Space Agency & Nicole Homeier (European Southern Observatory and University of Wisconsin-Madison)


Communities & Groups:     (New)  Space World Google+        Big Bang Facebook

Publicar un comentario






Para visualizar correctamente este sitio web utiliza un navegador basado en Chromium, o Fire Fox. Si te gusta la privacidad se recomienda utilizar Tor Browser.
Para la correcta visualización de la página de Husos Horarios utiliza Internet Explorer.

universo cosmos espacio astonomía cosmología exploración espacial astrofotografía astrofotógrafo astrónomo cosmólogo nebulosa galaxia nube oscura brillante estrella estrellas cúmulo estelar abierto globular planeta sol mercurio venus tierra marte júpiter saturno urano neptuno plutón ceres fobos deimos luna titán encelado europa calisto ganímedes ío caronte hydra nix cometa asteroide cinturón grupo galáctico supercúmulo planetaria emisión reflexión absorción polvo gas atmósfera rayos X gamma cuásar púlsar herbig-haro constelación asterismo fugaces meteoros meteoritossatélite iss estación cohetetelescopio hubble chandra spitzer nustar xmm-newton most very vlt vla vst vista herschel soar ssro sloan rosetta rosat philae osiris subaru campanas kitt keck wilson observatorio palomar calar horizons voyager mpg mycron merlin maven express mariner magellan juno grand canarias gemini hawk galileo galex gaia fuse digited dawn clementine cassini apolo apex alma agujero agujeros polo norte sur sistema solar vacío local big bang oculta coronalunar solar cráter superluna sangre eclipse total parcial ocultación luminiscencia refracción destello anular tránsito protuberancia filamento mancha manchas solares andrómeda messier enana física físico ngc ic trío arp melotte doradus barnard pilares trompa burbuja nuro cabeza cisne cygnus sh2 shapley mz rho sagittarius tarántula magallanes gran pequeña triángulo pickering torre variable binaria espectroscópica bennu thule carinae cygnicom coma virgo cuarteto quinteto cadena energía color markarian tritón molecular supernova nova remanente explosión frente choque einstein caldwell darwin huygens ptolomeo halley piggot gillett hale riccioli gentil newton bode kepler dreyer harding copérnico lacaille loys pierre hawking ciencia científicos cielo arcoiris lenticular espiral elíptica barrada brazo brazos región regiones vdb rcw año luz parsec grado grados celsius farenheit kelvin minuto minutos arco arcominutos oculta llena oscura partículas átomo átomos temperatura millones miles luz espectro universe cosmos space astonomy cosmology space exploration astrophotography astrophotographer astronomer cosmologist nebula galaxy cloud dark shining star stars star cluster open globular planet sun mercury venus earth mars jupiter saturn uranus neptune pluto ceres fobos deimos moon titan waxed europe calist ganymede charontera hydra nix comet aste group hydra nix comet aste group hydra nix comet band galactic planetary supercluster emission reflection absorption dust gas atmosphere x-ray gamma quasar pulsar herbig-haro constellation asterism fleeting meteor meteorite satellite iss station rockettelescope hubble chandra spitzer nustar xmm-newton most very vlt vla vst view herschel soar ssro sloan rosetta rostar ketar keckar ketar ketar ketar subtle rosat ketar roster ketsar keta subar kitty wilson observatory pigeon jello horizons voyager mpg mycron merlin maven express mariner magellan juno grand canarias gemini hawk galileo galex gaia fuse digited dawn clementine cassini apollo apex soul hole aguj eros north pole south solar system empty local big bang hidden coronalunar solar crater supermoon blood eclipse total partial concealment luminescence refraction ring flash transit protuberance filament spot sunspots andromeda messier dwarf physical physics ngc ic trio arp melotte doradus barnard pillars trunk nuro head swan cygnus sh2 shapley mz rho sagittarius tarantula magallanes large small triangle pickering variable tower binary spectroscopic bennu thule carinae cygnicom coma virgo quartet quintet chain energy color markarian molecular triton supernova nova remnant explosion front shock shock einstein caldwell darwin huygens ptolomeo halley piggot gyerton keplentil dd gillett harder keterton gilton kepleton dilton graveyard copernicus lacaille loys pierre hawking science scientists sky rainbow lenticular spiral elliptic barred arm arms region regions vdb rcw year light parsec degree degrees celsius farenheit kelvin minute minutes arc minute arch hidden full dark particles atom atoms temperature millions thousand light spectrum