Tag Archive for 'Galaxy'

An artist’s impression of a jet emanating from NGC 4993. Image credit: J.A. Biretta et al / NASA / ESA / Hubble Heritage Team / STScI / AURA / Sci-News.com.

Hubble Observes Ultra-Relativistic Jet from Neutron-Star Merger

Oct 14, 2022 by News Staff

GW170817, a titanic collision between two neutron stars detected in August 2017, ejected a structured relativistic jet with a speed greater than 99.97%...

Windhorst et al. traced light that was emitted by the bright elliptical galaxy VV 191a (left) through the spiral galaxy VV 191b (right). As a result, they were able to identify the effects of interstellar dust in the spiral galaxy. Webb’s near-infrared data also shows us the galaxy’s longer, extremely dusty spiral arms in far more detail, giving them an appearance of overlapping with the central bulge of the bright white elliptical galaxy, though the pair are not interacting. In this image, green, yellow, and red were assigned to Webb’s near-infrared data taken in 0.9, 1.5, and 3.56 microns (F090W, F150W, and F356W respectively). Blue was assigned to two Hubble filters, ultraviolet data taken in 0.34 microns (F336W) and visible light in 0.61 microns (F606W). Image credit: NASA / ESA / CSA / Rogier Windhorst, Arizona State University / William Keel, University of Alabama / Stuart Wyithe, University of Melbourne / JWST PEARLS Team.

Astronomers Trace Interstellar Dust in Backlit-Galaxy System

Oct 5, 2022 by News Staff

Dust is a key ingredient in both observed and physical properties of galaxies. It obscures and scatters stellar light, and enables star formation by acting...

Shown here in purple, the Magellanic Corona stretches more than 100,000 light-years from the main mass of stars, gas, and dust that make up the Magellanic Clouds, intermingling with the hotter and more extensive corona that surrounds the Milky Way. Image credit: Leah Hustak, STScI.

Magellanic Corona: Astronomers Detect Protective Shield around Small and Large Magellanic Clouds

Oct 4, 2022 by News Staff

The Small and Large Magellanic Clouds — satellite galaxies of the Milky Way Galaxy — are surrounded by a diffuse halo of hot, supercharged...

This image, taken by the X-SHOOTER instrument at ESO’s Very Large Telescope (VLT), shows light from GRB 210905A (center). Image credit: ESO / Rossi et al.

Astronomers Detect Powerful Blast in Early Universe

Oct 3, 2022 by Enrico de Lazaro

Astronomers using the X-SHOOTER instrument at ESO’s Very Large Telescope (VLT) have detected light from a gamma-ray burst at a redshift of 6.3, meaning...

This Hubble image shows the galaxy pair Arp-Madore 608-333. The color image is composed of near-infrared and optical observations from Hubble’s Advanced Camera for Surveys (ACS) and the Dark Energy Camera (DECam) on the Victor M. Blanco 4-m Telescope. Four 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 / Dark Energy Survey / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA / J. Dalcanton.

Hubble Space Telescope Captures Dance of Two Spiral Galaxies

Oct 3, 2022 by Enrico de Lazaro

The Hubble team has released a stunning image of two interacting galaxies collectively known as Arp-Madore 608-333. This Hubble image shows the galaxy...

This Webb image shows IC 5332, a spiral galaxy some 25 million light-years away in the constellation of Sculptor. Image credit: NASA / ESA / Hubble / PHANGS-HST team.

Webb Sees Complex Structures in Spiral Galaxy IC 5332

Sep 29, 2022 by Enrico de Lazaro

The Webb team has released a vivid image of the intermediate spiral galaxy IC 5332. This Webb image shows IC 5332, a spiral galaxy some 25 million light-years...

This Hubble image shows NGC 5495, a spiral galaxy some 319 million light-years away in the constellation of Hydra. The color image was made from separate exposures taken in the visible and infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). Five 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 / J. Greene / R. Colombari.

Hubble Captures Amazing New Photo of NGC 5495

Sep 26, 2022 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have taken a detailed image of the spiral galaxy NGC 5495. This Hubble image shows NGC 5495, a spiral...

This Hubble image shows NGC 1961, an intermediate spiral galaxy some 197 million light-years away in the constellation of Camelopardalis. Image credit: NASA / ESA / J. Dalcanton, University of Washington / R. Foley, University of California, Santa Cruz / G. Kober, NASA’s Goddard Space Flight Center / Catholic University of America.

Hubble Focuses on Enormous Spiral Galaxy: NGC 1961

Sep 15, 2022 by Enrico de Lazaro

NASA has released a stunning photo taken by the NASA/ESA Hubble Space Telescope of the intermediate spiral galaxy NGC 1961. This Hubble image shows NGC...

Bohn et al. identified a new set of previously undetected star-forming regions that are heavily obscured by dust in a starburst ring in the barred spiral galaxy NGC 7469. The area of this image from Webb’s Near-Infrared Camera (NIRCam) is shown by a box in the image of NGC 7469 below. Image credit: Bohn et al., arXiv: 2209.04466

Webb Observes Powerful Starburst Ring in NGC 7469

Sep 14, 2022 by Natali Anderson

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have discovered 36 new star-forming regions in a circumnuclear starburst ring in the barred...

Crocker et al. reveal that the Fermi cocoon is actually due to emission from the Sagittarius dwarf spheroidal galaxy. Image credit: O. Macias.

Astronomers Detect Gamma Rays from Sagittarius Dwarf Spheroidal Galaxy

Sep 6, 2022 by Enrico de Lazaro

The significant gamma-ray emission is coming from a population of millisecond pulsars within the Sagittarius dwarf spheroidal galaxy, an elliptical loop-shaped...

This Hubble image shows two overlapping spiral galaxies: LEDA 2073461 and SDSS J115331.86+360024.2. Image credit: NASA / ESA / Hubble / W. Keel.

Two Spiral Galaxies Appear to Overlap in New Hubble Image

Sep 5, 2022 by Enrico de Lazaro

LEDA 2073461 and SDSS J115331.86+360024.2 look like they’re interacting, but they are actually separated by millions of light-years. This Hubble image...

The newly-discovered lensed star in the Abell 2744 galaxy-cluster field. Image credit: Chen et al., arXiv: 2207.11658.

Webb Detects Blue Supergiant Star in Early Universe

Sep 1, 2022 by Natali Anderson

The newly-discovered blue supergiant is much hotter than the Sun, and existed when the Universe was about 2.6 billion years old. Left panel shows the color...

This artist’s conception shows the stream of gas and stars that were flung away from a massive galaxy during its merger with a smaller galaxy. Image credit: ALMA / ESO / NAOJ / NRAO / S. Dagnello, NRAO, AUI & NSF.

Massive Galaxy Strips Star-Forming Gas from Smaller Galaxy during Encounter

Aug 30, 2022 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and the NASA/ESA Hubble Space Telescope have observed SDSS J144845.91+101010.5,...

This image, taken with the HAWK-I infrared instrument on ESO’s Very Large Telescope, shows the Sagittarius B1 region. Image credit: ESO / Nogueras-Lara et al.

Astronomers Detect Excess of Young Stars in Sagittarius B1

Aug 29, 2022 by Natali Anderson

Sagittarius B1, a region close to the center of our Milky Way Galaxy, hosts more than 100,000 solar masses of young stars. This image, taken with the...

Messier 74, a grand design spiral galaxy located 32 million light-years away in the constellation of Pisces, shines at its brightest in this combined optical/mid-infrared image, featuring Webb and Hubble data. The red colors mark dust threaded through the arms of the galaxy, lighter oranges being areas of hotter dust. The young stars throughout the arms and the nuclear core are picked out in blue. Heavier, older stars towards the galaxy’s center are shown in cyan and green, projecting a spooky glow from the core of Messier 74. Bubbles of star formation are also visible in pink across the arms. Image credit: NASA / ESA / CSA / Webb / Hubble / J. Lee / PHANGS-JWST Team / R. Chandar / J. Schmidt.

Webb and Hubble Observe Messier 74 in Multiple Wavelengths

Aug 29, 2022 by Enrico de Lazaro

New data from the NASA/ESA/CSA James Webb Space Telescope and the NASA/ESA Hubble Space Telescope compliment each other to provide a comprehensive view...

This Webb/NIRCam image shows the lensed star Earendel (center). Image credit: Welch et al., arXiv: 2208.09007.

Webb Sheds New Light on Stellar Properties of Earendel, Farthest Known Star

Aug 26, 2022 by Natali Anderson

Earendel is a B-type giant star, a luminous blue variable star, or even a binary system with an extremely hot primary member, according to new observations...

(A) the Milky Way Galaxy with superimposed spiral arms and geological events: the arm and the Solar System rotate clockwise at different rates; the ‘+’ number denotes the number of times Earth has passed through that arm; (B) model of the Oort cloud showing cometary nuclei; (C) schematic reconstruction of early Earth impact process; (D) early crustal nuclei development. Image credit: NASA / JPL-Caltech / ESO / R. Hurt / Kirkland et al., doi: 10.1130/G50513.1.

Transits through Milky Way’s Spiral Arms Helped Form Early Earth’s Continental Crust, Study Says

Aug 24, 2022 by News Staff

New research led by Curtin University geologists suggests that regions of space with dense interstellar clouds may send more high-energy comets crashing...

This Webb image shows members of the SMACS0723_PC protocluster: the red circles show the position of the two spectroscopically confirmed galaxies and the green circles are at the position of the six other protocluster members candidates. Image credit: Laporte et al., arXiv: 2208.04930.

Webb Finds Protocluster of Galaxies in Early Universe

Aug 22, 2022 by Natali Anderson

Astronomers from the University of Cambridge and elsewhere have analyzed the spectroscopic and photometric data from three instruments (NIRSpec, NIRISS...

This Hubble image shows NGC 1156, a dwarf irregular galaxy located 25 million light-years away in the constellation of Aries. 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 Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys (ACS). 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 / R.B. Tully / R. Jansen / R. Windhorst.

Hubble Observes Magellanic-Type Dwarf Irregular Galaxy

Aug 22, 2022 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has produced a spectacularly detailed image of an isolated dwarf irregular galaxy called NGC 1156. This Hubble image...

This image of NGC 7727 was captured by the FORS2 instrument on ESO’s Very Large Telescope. Image credit: ESO.

VLT Sees Spectacular Cosmic Collision: NGC 7727

Aug 16, 2022 by Enrico de Lazaro

Astronomers using the FOcal Reducer and low dispersion Spectrograph 2 (FORS2) instrument on ESO’s Very Large Telescope (VLT) have taken a picture of...

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