Tag Archive for 'Galaxy'

This artist’s impression shows how ULAS J1120+0641, a very distant quasar powered by a black hole with a mass two billion times that of the Sun, may have looked. Image credit: M. Kornmesser / ESO.

Quasars are Standardizable Cosmic Candles, Astronomers Say

Sep 14, 2021 by News Staff

Using spectral data from the Sloan Digital Sky Survey (SDSS), the Chandra Source Catalog 2.0, and the Chandra COSMOS Legacy survey, astronomers have found...

Location of the observed O- and B- type stars on the Galactic plane. Image credit: De Cia et al., doi: 10.1038/s41586-021-03780-0.

Milky Way’s Interstellar Medium Is Not Homogeneous, New Study Shows

Sep 9, 2021 by Natali Anderson

Astronomers using the NASA/ESA Hubble Space Telescope have measured the metallicity of the neutral interstellar medium towards 25 bright stars in our Milky...

This image shows the fall of a blue ultradiffuse galaxy into a galaxy system and its subsequent ejection as a red ultradiffuse galaxy. Image credit: Vanina Rodriguez.

New Research Reveals How Ultradiffuse Galaxies Form

Sep 7, 2021 by News Staff

Ultradiffuse galaxies are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low brightness, making them very difficult...

This DEC image shows Centaurus A, a giant galaxy located some 13 million light-years away in the constellation of Centaurus. Image credit: CTIO / NOIRLab / DOE / NSF / AURA / M. Soraisam, University of Illinois at Urbana-Champaign & NOIRLab / T.A. Rector, University of Alaska Anchorage & NOIRLab / M. Zamani, NOIRLab / D. de Martin, NOIRLab.

Astronomers Capture Beautiful New Image of Centaurus A

Sep 2, 2021 by News Staff

Using the Dark Energy Camera (DEC) on the Víctor M. Blanco 4-m Telescope at Cerro Tololo Inter-American Observatory in Chile, astronomers have obtained...

MG B2016+112: the X-ray light from one of the objects on the left (purple) has been warped by the gravity of the intervening galaxy to produce two beams and X-ray sources (A and B) detected in the Chandra image, which is represented by the dashed square on the right; the X-ray light from the fainter object (blue) produces an X-ray source (C) that has been amplified by the galaxy to be as much as 300 times brighter than it would have been without the lensing; the Chandra image is shown in the inset; these two X-ray-emitting objects are likely a pair of growing supermassive black holes or a growing supermassive black hole and a jet. Image credit: NASA / CXC / M. Weiss / SAO / Schwartz et al.

Chandra Observes Gravitationally-Lensed Supermassive Black Hole System

Sep 1, 2021 by News Staff

By combining gravitational lensing with the capabilities of NASA’s Chandra X-ray Observatory, astronomers have detected two X-ray-emitting objects —...

Zoomed in view of an ALMA (red/orange) and Hubble (optical) composite of NGC 4921; it highlights filament structures resulting from the effects of ram-pressure stripping. Image credit: ALMA / ESO / NAOJ / NRAO / S. Dagnello, NRAO / NASA / ESA / Hubble / K. Cook, LLNL / L. Shatz.

Astronomers Find Cosmic Boomerang in Coma Cluster Galaxy

Aug 30, 2021 by News Staff

Using data from the Atacama Large Millimeter Array (ALMA), the Combined Array for Research in Millimeter-Wave Astronomy (CARMA) and the NASA/ESA Hubble...

An artist’s conception of exoplanets in a dense star cluster. Image credit: Michael Bachofner.

Milky Way Galaxy’s Bulge Could Have Planetary Systems, Too

Aug 30, 2021 by Enrico de Lazaro

The Milky Way’s bulge is the ancient and crowded central hub of our Galaxy. It contains about one quarter of the total stellar mass of the Milky Way...

Dacheng Lin et al discovered a ‘wandering’ black hole in the lenticular galaxy GJ1417+52. The main panel has a wide-field, optical light image from Hubble. The black hole and its host galaxy are located within the box in the upper left. The inset on the left contains Hubble’s close-up view of GJ1417+52. Within this inset the circle shows a point-like source on the northern outskirts of the galaxy that may be associated with XJ1417+52. The inset on the right is Chandra’s X-ray image of XJ1417+52 in purple, covering the same region as the Hubble close-up. Image credit: X-ray – NASA / CXC / UNH / Dacheng Lin et al; optical – NASA / STScI.

Wandering Supermassive Black Holes May Be More Abundant than Previously Thought

Aug 23, 2021 by News Staff

New research led by astronomers from the Harvard & Smithsonian’s Center for Astrophysics shows that the current census of supermassive black holes...

A compilation of the new science results from LOFAR. Image credit: Ramírez-Olivencia et al. / NASA, ESA / Hubble Heritage Team / STScI / AURA / A. Evans, University of Virginia, Charlottesville / NRAO / Stony Brook University / R. Cumming / C. Groeneveld / R. Timmerman / LOFAR / Kukreti / Sloan Digital Sky Survey / A. Kappes / F. Sweijen / DESI Legacy Imaging Survey / S. Badole / L. Calcada / W.L. Williams.

LOFAR Captures Most Detailed Images Ever Seen of Distant Galaxies

Aug 19, 2021 by News Staff

Using data from the Low Frequency Array (LOFAR), a radio telescope that operates at frequencies between 10 and 240 MHz and consists of 52 stations spread...

This image, captured by CSIRO’s ASKAP radio telescope, shows the Large Magellanic Cloud. Image credit: Pennock et al., doi: 10.1093/mnras/stab1858.

Astronomers Create New Radio Map of Large Magellanic Cloud

Aug 19, 2021 by News Staff

Astronomers using CSIRO’s Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope have observed the Large Magellanic Cloud, a small satellite...

Stretching 3,300 light-years, a collection of young stars and star-forming clouds in the Sagittarius arm of our Milky Way Galaxy is the first major structure identified with such a dramatically different orientation relative to an arm. The background image shows the location of the splinter in the Milky Way. The yellow region in the center of the image is the Galaxy’s bright and crowded center. The Milky Way’s arms spiral around the center, and are full of stars and star-forming clouds of gas and dust. The inset provides a closer view of the structure, as well as its size and distance from the Sun. The nearby spiral arms are also noted. The star shapes indicate a star-forming region that may contain anywhere from dozens to thousands of stars. These stars and star-forming regions are moving through space together, at roughly the same speed and in the same direction. Image credit: NASA / JPL-Caltech.

3,300-Light-Year-Long Linear Structure Spotted in Milky Way’s Sagittarius Arm

Aug 18, 2021 by News Staff

Astrophysicists have mapped the 3D locations and velocities of star-forming regions in a segment of the Sagittarius arm using data from NASA’s Spitzer...

This Hubble image shows the barred spiral galaxy NGC 1385. 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). 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. Lee / PHANGS-HST Team.

Hubble Looks at Barred Spiral Galaxy NGC 1385

Aug 16, 2021 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have taken a picture of a spiral galaxy called NGC 1385. This Hubble image shows the barred spiral...

The two galaxies Norris et al. think are responsible for the streams of electrons (shown as curved arrows) that form the ‘dancing ghosts;’ but the authors don’t understand what is causing the filament labelled as 3. Image credit: Jayanne English & Ray Norris / EMU Project / Dark Energy Survey.

ASKAP Radio Telescope Spots ‘Dancing Ghost’ Galaxies

Aug 10, 2021 by News Staff

Astronomers using CSIRO’s Australian Square Kilometre Array Pathfinder (ASKAP) telescope, a radio telescope situated about 800 km north of Perth, in...

An Einstein ring formed by gravitationally lensed light from 2M1310-1714. Image credit: NASA / ESA / Hubble / T. Treu / Judy Schmidt, www.geckzilla.com.

Gravity of Massive Galaxy Pair Magnifies Light from Distant Quasar

Aug 9, 2021 by Enrico de Lazaro

Thanks to the presence of a gravitational lens, the NASA/ESA Hubble Space Telescope has captured five separate images of 2M1310-1714, a quasar located...

This image shows galaxy Arp 148, captured by NASA’s Spitzer Space Telescope and the NASA/ESA Hubble Space Telescope; specially processed Spitzer data is shown inside the white circle, revealing infrared light from a supernova hidden by dust; this is one five hidden supernovae documented by Fox et al. Image credit: NASA / JPL-Caltech.

Spitzer Discovers Five Dust-Obscured Supernovae

Aug 4, 2021 by News Staff

Astronomers using data from NASA’s Spitzer Space Telescope have looked for dust-extinguished supernovae in the nuclear regions of 40 luminous and ultra-luminous...

This Hubble image shows IC 1954, a spiral galaxy some 45 million light-years away in the constellation of Horologium. Image credit: NASA / ESA / Hubble / J. Lee / PHANGS-HST Team.

Hubble Space Telescope Sees Spiral Galaxy IC 1954

Aug 2, 2021 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has produced a beautiful image of the small spiral galaxy IC 1954. This Hubble image shows IC 1954, a spiral galaxy...

An image of the Andromeda Galaxy from the Sardinia Radio Telescope after averaging over the whole bandwidth at 6.6 GHz. Image credit: Fatigoni et al., doi: 10.1051/0004-6361/202040011.

Sardinia Telescope Captures Most Detailed Radio Image Ever Seen of Andromeda Galaxy

Jul 30, 2021 by News Staff

Using the Sardinia Radio Telescope, a 64-m fully steerable radio telescope near San Basilio, Sardinia, Italy, an international team of astronomers has...

This Hubble image shows the triple galaxy system Arp 195. Image credit: NASA / ESA / Hubble / J. Dalcanton.

Hubble Space Telescope Sees Interacting Galaxy Triplet

Jul 26, 2021 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a striking photo of the triple merging system Arp 195. This Hubble image shows the...

This Hubble image shows Messier 104. Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA.

Giant Stellar Stream Spotted around Sombrero Galaxy

Jul 22, 2021 by Enrico de Lazaro

The Sombrero galaxy likely merged with a relatively massive galaxy several billions years ago. In a new study published in the Monthly Notices of the Royal...

The new highest resolution EHT image of the Centaurus A’s jet launching region. Image credit: R. Bors / CSIRO / ATNF / Feain et al. / Morganti et al. / Junkes et al. / ESO / WFI / MPIfR / APEX / Weiß et al. / NASA / CXC / CfA / Kraft et al. / TANAMI / Müller et al. / EHT / Janssen et al.

Event Horizon Telescope Captures Image of Centaurus A’s Black Hole Jet

Jul 20, 2021 by Natali Anderson

Astronomers from the Event Horizon Telescope (EHT) Collaboration have imaged a jet in the heart of the nearby radio galaxy Centaurus A and identified the...

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