A huge galaxy clustera cluster of galaxiesThen countless stars wander among the galaxiesghost light (ghost light)leaves These stars do not appear to be gravitationally bound to any of the galaxies in the cluster.
【▲ Two massive galaxy clusters “MOO J1014+0038” (left) and “SPT-CL J2106-5844” (right) captured by the Hubble Space Telescope’s wide-field camera 3. The artificial color blue is a metaphor for the Hubble data which captures the “intracluster light”. This faint glow shows a smooth distribution of light from stray stars scattered within the galaxy cluster (Credit: SCIENCE: NASA, ESA, STScI, James Jee (Yonsei University) IMAGE PROCESSING: Joseph DePasquale (STScI)) ]
The faint light emitted by such a star“Galaxy cluster inner light (intracluster light)」is called
The light in the galaxy cluster is1951astronomer Fritz Zwicky (Fritz Zwicky、1898 – 1974) by“Coma Berenices Galaxy Cluster”first found in Zwicky once moved in this cluster of galaxiesintergalactic matterhe is reported to have observed
The Coma Cluster is from EarthAbout 330 million light years agolocated in1000more galaxiescontaining As it is one of the closest clusters of galaxies to Earth, even small telescopes at the time were able to detect the ghostly glow.
Recent infrared observations by the Hubble Space Telescope show that these starsbillions of years agoIt appears to wander, and is not affected by the general intercluster activity that removes stars from the galaxy. In addition, the intracluster light intensity for all the light emitted by the clusterratiobillions of years ago to the presentmustIt has also become clear that
“This suggests that these stars are the source of galaxy cluster formation.Early stageIt means that I have already lost my hometown in theJames Jee) saying.
“Although we do not know exactly what caused these stars to lose their homeland, and current theories cannot explain this result, somehowearly universe“During its early formation, galaxies were so small that they were weakly controlled by gravity, so they could have easily thrown away stars,” Gee said.
In addition, Hyunjin Joo of Yonsei University, first author of the paper,Hyunjin Joo), “If we can explain the origin of the stars in the galaxy cluster, it will lead to an understanding of the formation history of the entire galaxy cluster.dark mattervisible totracerIt will serve as a
[▲ Delwedd gyfeirio gydag allwedd lliw, saeth cyfeiriad, a bar graddfa wedi’u hychwanegu at y ddelwedd ar y dechrau. Yr allwedd lliw yw enw’r hidlydd a ddefnyddir ar gyfer casglu golau. Mae’r saeth azimuth tua’r gogledd yn pwyntio at begwn y gogledd nefol. Mae bar graddfa yn dangos blynyddoedd golau (ly) a parsecs (pc) (Credyd: GWYDDONIAETH: NASA, ESA, STScI, James Jee (Prifysgol Yonsei) PROSESU DELWEDD: Joseph DePasquale (STScI))]
Source
- Image Credit: SCIENCE: NASA, ESA, STScI, James Jee (Yonsei University) IMAGE PROCESSING: Joseph DePasquale (STScI)
- HUBBLE SITE – HUBBLE DISCOVERS THAT VISIBLE LIGHTS AMONG GALAXIES EXTEND FAR BACK IN TIME
- Nature – Intracluster luminosity is already abundant at redshift beyond unity
Sentence/Tetsuro Yoshida
