Comparison_of_rotating_disc_galaxies_in_the_distant_Universe_and_the_present_day.jpg
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Summary
| Description |
English:
Schematic representation of rotating disc galaxies in the early Universe (right) and the present day (left). Observations with ESO's Very Large Telescope suggest that such massive star-forming disc galaxies in the early Universe were less influenced by dark matter (shown in red), as it was less concentrated. As a result the outer parts of distant galaxies rotate more slowly than comparable regions of galaxies in the local Universe.
Español:
Representación esquemática de la rotación del disco de las galaxias en el universo temprano (derecha) y en la actualidad (izquierda). Las observaciones llevadas a cabo con el VLT (Very Large Telescope) de ESO sugieren que la materia oscura (marcada en rojo) influyó menos en los discos de estas galaxias masivas con formación estelar del universo temprano, ya que estaba menos concentrada. Como resultado, las partes exteriores de las galaxias distantes giran más lentamente que las regiones comparables de las galaxias del universo local.
Deutsch:
Schematische Darstellung von rotierenden Scheibengalaxien im frühen Universum (rechts) und heute (links). Beobachtungen mit dem Very Large Telescope der ESO deuten darauf hin, dass solche massereichen sternbildenden Scheibengalaxien im frühen Universum von Dunkler Materie weniger beeinflusst wurden (rot dargestellt), da sie weniger verdichtet war. Infolgedessen drehen sich die äußeren Teile der fernen Galaxien langsamer als vergleichbare Regionen der Galaxien im lokalen Universum. Ihre Rotationskurven fallen mit zunehmendem Radius ab, anstatt flach zu sein.
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| Date | |
| Source | http://www.eso.org/public/images/eso1709a/ |
| Author | ESO/L. Calçada |
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