MACSJ0647.7+7015

MACSJ0647.7+7015 mit MACS0647-JD vergrößert.

MACSJ0647.7+7015 ist ein Galaxienhaufen mit einer Rotverschiebung von z=0,591. Damit ist der Galaxienhaufen etwa 1,26 Millionen Parsec von der Erde entfernt. Die Masse beträgt etwa Sonnenmassen.[1] Mit Hilfe des Gravitationslinseneffekt dieses Haufens wurde die Galaxie MACS0647-JD mehrfach vergrößert und trug dazu bei einer der entferntesten Galaxien zu entdecken.

Weblinks

Commons: MACSJ0647.7+7015 – Sammlung von Bildern, Videos und Audiodateien

Einzelnachweise

  1. ↑ Alexander H. Young, Tony Mroczkowski, Charles Romero, Jack Sayers, Italo Balestra, Tracy E. Clarke, Nicole Czakon, Mark Devlin, Simon R. Dicker, Chiara Ferrari, Marisa Girardi, Sunil Golwala, Huib Intema, Phillip M. Korngut, Brian S. Mason, Amata Mercurio, Mario Nonino, Erik D. Reese, Piero Rosati, Craig Sarazin, Keiichi Umets: MEASUREMENTS OF THE SUNYAEV-ZEL’DOVICH EFFECT IN MACS J0647.7+7015 AND MACS J1206.2-0847 AT HIGH ANGULAR RESOLUTION WITH MUSTANG. (pdf) S. 2, abgerufen am 9. Mai 2018 (englisch).

Auf dieser Seite verwendete Medien

Hubble spots candidate for most distant known galaxy.jpg
In this image, astronomers use the NASA/ESA Hubble Space Telescope and a cosmic zoom lens to uncover the farthest known galaxy in the Universe.

The newly discovered galaxy, named MACS0647-JD, is very young and only a tiny fraction of the size of our Milky Way. The object is observed 420 million years after the Big Bang, when the Universe was 3 percent of its present age of 13.7 billion years. The inset at left shows a close-up of the young dwarf galaxy.

This is the latest discovery from a large program that uses massive clusters of galaxies as natural zoom lenses to reveal distant galaxies in the early universe. Called the Cluster Lensing And Supernova survey with Hubble (CLASH), the program allows astronomers to use the gravity of massive galaxy clusters to magnify distant galaxies behind them, an effect called gravitational lensing.

In this Hubble observation, astronomers used the massive galaxy cluster MACS J0647.7+7015 as the giant cosmic telescope. The bright yellow galaxies near the center of the image are cluster members. The cluster’s gravity boosted the light from the faraway galaxy, making its image appear approximately eight times brighter than it otherwise would. The gravitational lensing technique allowed astronomers to detect the galaxy more efficiently and with greater confidence. Without the cluster’s magnification powers, astronomers would not have seen this remote galaxy.

This image is a composite taken with Hubble’s Wide Field Camera 3 and the Advanced Camera for Surveys. The observations were taken 5 October and 29 November 2011.