Tag Archive for 'Intracluster medium'

SPT-CL J2215-3537 resembles a blue cloud with a hazy golden light at its core. The cluster is set against the blackness of space, which is dotted with white, orange and blue specks of light. A combination of X-ray, ultraviolet, optical, and infrared light, was used to create the image. The blue cloud represents X-ray gas observed by NASA’s Chandra X-ray Observatory. The cloud is soft, and uniform in texture. Over time, galaxy clusters often merge or collide. These collisions cause disturbances and sharp features in a cluster’s gas. When a cluster takes on a smooth, calm appearance, as found here in SPT-CL J2215-3537, it indicates that no such collisions have occurred for a very long time. Astronomers call these galaxy clusters ‘relaxed.’ The hazy golden light at the heart of the cloud represents a massive central galaxy with a large amount of star formation. This central galaxy is quite isolated within the blue gas cloud. There are relatively few nearby specks of light near the central galaxy, and none are as bright or as large. No other large galaxies have been found within 600,000 light-years of the central galaxy. This implies that SPT-CL J2215-3537 has not experienced a galaxy merger in the last billion years. Image credit: NASA / CXC / MIT / M. Calzadilla / STScI / HST / N. Wolk.

Chandra Spots ‘Relaxed’ Galaxy Cluster in Distant Universe

Jul 21, 2023 by Enrico de Lazaro

The dynamically relaxed galaxy cluster SPT-CL J2215-3537 is about 8.4 billion light-years from Earth, making it the farthest galaxy cluster ever spotted...

In this Hubble image, the disk of the jellyfish galaxy JO206 is trailed by long tendrils of bright star formation that stretch towards the bottom right of the image, just as jellyfish trail tentacles behind them. The color image was made from separate exposures taken in the visible, ultraviolet and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). The image is based on data obtained through six filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / M. Gullieuszik / GASP Team.

Hubble Space Telescope Spots Jellyfish Galaxy in Aquarius

Jun 5, 2023 by Enrico de Lazaro

The Hubble astronomers have released an absolutely beautiful photo taken by the NASA/ESA Hubble Space Telescope of the jellyfish galaxy JO206. In this...

This Hubble image shows JW39, a jellyfish galaxy some 900 million light-years away in the constellation of Coma Berenices. The color image was made from separate exposures taken in the visible, near-infrared and ultraviolet regions of the spectrum with Hubble’s WFC3 instrument. Six filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / M. Gullieuszik / GASP Team.

Hubble Snaps Stunning Image of Jellyfish Galaxy

May 22, 2023 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured a striking new photo of a jellyfish spiral galaxy called JW39. This Hubble image shows JW39, a jellyfish...

This image shows the Spiderweb protocluster, seen at a time when the Universe was only 3 billion years old. Image credit: ESO / Di Mascolo et al. / NASA / ESA / Hubble / H. Ford.

ALMA Detects Huge Reservoir of Hot Gas in Very Distant Galaxy Protocluster

Mar 29, 2023 by News Staff

The galaxy protocluster is question is forming around the recently-discovered Spiderweb galaxy (also known as MRC 1138-262 or PKS 1138-262), an object...

This Hubble image shows the trailing arms of the spiral galaxy NGC 2276. The color image was made from separate exposures taken in the ultraviolet, visible and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). It is based on data obtained through five filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / P. Sell / L. Shatz.

Hubble Spots Magnificent Interacting Galaxy: NGC 2276

May 27, 2021 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope shot this image of a spiral galaxy called NGC 2276. This Hubble image shows the trailing arms of the spiral galaxy...

Simulation showing the distribution of hot gas (left), compared with the eROSITA X-ray image (right) of the Abell 3391-Abell 3395 system. Image credit: Reiprich et al., doi: 10.1051/0004-6361/202039590.

Astronomers Discover Longest Filament of Intergalactic Gas Yet

Dec 17, 2020 by News Staff

Using the eROSITA X-ray telescope onboard the Spectrum-Roentgen-Gamma (SRG) space observatory and CSIRO’s Australian Square Kilometre Array Pathfinder...

This composite image shows the galaxy cluster HSC J023336-053022, also known as ACT-CL J0233.6-0530 or XLSSC 105. Image credit: Green Bank Observatory / National Science Foundation / Subaru Telescope / National Astronomical Observatory of Japan / HSC-SSP Collaboration / ESA / XMM-Newton / XXL Survey Consortium.

Giant Galaxy Cluster Acts as Cosmic Furnace

Nov 12, 2020 by News Staff

HSC J023336-053022, a massive galaxy cluster located approximately 4 billion light-years away from Earth, is heating the material within it to hundreds...