Showing posts with label constellation Aquarius. Show all posts
Showing posts with label constellation Aquarius. Show all posts

Wednesday, November 26, 2025

Fall Collection: Before Fall Leaves, See Seasonal Offerings from NASA's Chandra





  • Four images that one can imagine connections to fall have been released by NASA’s Chandra X-ray Observatory.

  • The images are the star-forming region NGC 6334, supernova remnant G272.2-0.3, interacting spiral galaxies NGC 2207 and IC 2163, as well as R Aquarii.

  • Each image contains X-rays from Chandra that have been combined with data from other telescopes that detect different types of light.

  • Pareidolia is the phenomenon that allows people to see familiar patterns or shapes in data.

Before fall gives way to winter in the northern hemisphere, NASA’s Chandra X-ray Observatory has several images that celebrate autumn and its many delights to share. In spirit of the season, this collection gathers Chandra data with those from its telescopic family including NASA’s James Webb, Hubble, and Spitzer Space Telescopes, plus others in space and on the ground.

Here is a sample of the seasonal offerings that space has in store:

NGC 6334: COSMIC LEAVES BLOWING
For many, nothing evokes fall more than fallen leaves. In this view of NGC 6334, glowing pockets of dust and gas in the nebula resemble leaves that have been picked up by a wind gust. This region is actually home to strong winds blowing from the young stars that have formed there. This image contains X-ray data from Chandra (blue, green, and yellow) that shows the effects of these winds, which have been combined with infrared data from the now-retired Spitzer Space Telescope (red, brown), which shows the dust and gas that fuels the growing stars.

G272: THE SPACE PUMPKIN
Born after a violent explosion of a star, this cosmic gourd is the supernova remnant G272.2-03.2. X-ray observations (orange and magenta) from Chandra provide evidence that G272 is the result of a Type Ia supernova explosion, where a white dwarf star pulls material from a companion star until it triggers a thermonuclear explosion and obliterates the star. The inside of the “pumpkin” is superheated gas that is filling the space cleared out by the explosion as it moves outward.

R AQUARII: A COSMIC SWEATER
Multiple telescopes teamed up to capture an image that looks like a cozy sweater with fuzzy arms. X-rays from Chandra and ESA’s XMM-Newton (purple), optical light data from Hubble and the Very Large Telescope in Chile (orange, red, and violet), and an optical image from astrophotographer Bob Fera (deep blue) combine to reveal R Aquarii. Nestled within the cozy ‘body’ of R Aquarii is a pair of stars where a white dwarf is pulling material from a much larger red giant companion. When enough material accumulates on the surface of the white dwarf, it triggers an outburst that sends a jet out into space. Over time, these jets twist and loop around each other weaving the structure seen today.

NGC 2207 and IC 2163: A PAIR OF GALACTIC CORNUCOPIA
A cornucopia is a horn-shaped basket that traditionally carries fruits and vegetables. There is nothing edible in this pair of galactic cornucopias but there are a bounty of stars, dust, and other ingredients than make up these two spiral galaxies, known as NGC 2207 (right) and IC 2163 (left), that we see face-on. This view of NGC 2207 and IC 2163 takes a James Webb infrared image (white, gray, and red) and adds the X-ray view from Chandra (blue). Together, it is quite an eye-catching result.

NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the Chandra program. The Smithsonian Astrophysical Observatory's Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.

Quick Look: Before Fall Leaves, See Seasonal Offer ings from NASA's Chandra




Visual Description:

This release highlights a collection of four composite images, presented in a two-by-two grid. Each image features data gathered by the Chandra X-ray Observatory and additional NASA and other telescopes.

At our upper left is NGC 6334, a massive nebula and star-forming region. In this image, scores of glowing young stars, depicted as tiny specs of distant light, illuminate an otherwise dark scene. The specs of red, green, yellow, purple, and white, are clustered near the center of the image, but extend to the edges of the frame in faint streaks. Partially masking the specs of color are tendrils of grey clouds; strong winds of dust and gas blowing from the still-forming stars.

The image at our upper right features a supernova remnant called G272.2-3.2. Here, a white dwarf star has pulled material from a companion star, triggering a thermonuclear explosion. What remains is a giant ball of superheated gas, set against a densely-packed field of distant stars and galaxies. In this image, the ball of gas is a mottled, translucent orange sphere with patches of hot pink at the outer edges.

The image at the grid's lower right depicts a pair of colliding spiral galaxies. Here, both spirals are shown face on, with the smaller of the two galaxies, IC 2163, at the upper left of the larger galaxy, NGC 2207, which dominates the center and lower right of the image. Both galaxies have long, spiraling, silver blue arms, dotted with specs of blue and red. Toward our upper left, the curving arms overlap, and bend toward their neighbors' core.

Finally, at our lower left, is R Aquarii, a symbiotic binary star. Here, a white dwarf star pulls material from a much larger red giant companion, sending looping jets of matter into space. In this composite image, which includes an optical image from astrophotographer Bob Fera, the resulting structure resembles a cozy sweater with a red body, and blue wooly arms opened wide.



Fast Facts for NGC 6334:

Credit: X-ray: NASA/SAO/CXC; Infrared: NASA/JPL/CalTech/Spitzer; Image Processing: NASA/CXC/SAO/J. Schmidt
Release Date: November 24, 2025
Scale: Image is about 72 arcmin (115.2 light-years) across.
Category: Normal Stars and Star Clusters
Coordinates (J2000): RA: 17h 20m 50.9s | Dec: -36° 06' 54"
Constellation: Scorpius
Observation Date(s): 10 observations from August 2002 to July 2016
Observation Time: 85 hours 28 minutes (3 days 13 hours 28 minutes)
Obs. IDs: 2573, 2574 ,3844, 4591, 8975, 12382, 13436, 18082, 18081, 18876
Instrument: ACIS
Color Code: X-ray: red, orange, green, and purple; Infrared: white and red
Distance Estimate: About 5,500 light-years from Earth



Fast Facts for SNR G272.2-03.2:

Credit: X-ray: NASA/CXC/SA0; Optical: NOIRLab/DECaPS2; Image Processing: NASA/CXC/SAO/L. Frattare
Release Date: November 24, 2025
Scale: Image is about 2.8 arcmin (5.7 light-years) across.
Category: Supernovas & Supernova Remnants
Coordinates (J2000): RA: 9h 06m 47s | Dec: -52° 05' 50"
Constellation: Vela
Observation Date(s): 2 observations Aug 26-27, 2008
Observation Time: 17 hours 55 minutes
Obs. IDs: 9147, 10572
Instrument: ACIS
Color Code: X-ray: cyan, yellow, and magenta; Optical: red, green, and blue
Distance Estimate: About 7,000 light-years from Earth



Fast Facts for R Aquarii:

Credit: X-ray: NASA/CXC/SAO; ESA/XMM-Newton; Optical HST: NASA/ESA/STScI; Optical Ground: Deep Space Remote observatories/B. Fera; ESO/VLT; Image Processing: NASA/CXC/SAO/L. Frattare
Release Date: November 24, 2025
Scale: Image is about 9.5 arcmin (1.8 light-years) across.
Category: White Dwarfs and Planetary Nebulas
Coordinates (J2000): RA: 23h 43m 49.5s | Dec: -15° 17' 04"
Constellation: Aquarius
Observation Date(s): 3 pointings between Sep 2001 and Oct 2005
Observation Time: 34 hours 54 minutes (1 day 10 hours 54 minutes)
Obs. IDs: 651, 4546, 5438
Instrument: ACIS
Color Code: X-ray: purple and blue; Optical (HST): cyan and orange; Optical (Ground): red, green, and blue; Radio: red with green
Distance Estimate: About 650 light-years from Earth



Fast Facts for NGC 2207 & IC 2163:

Credit: X-ray: NASA/CXC/SAO; Infrared: NASA/ESA/CSA/STScI/Webb; Image Processing: NASA/CXC/SAO/L. Frattare
Release Date: November 24, 2025
Scale Image is about 5 arcmin (189,000 light-years) across.
Category: Normal Galaxies, Starburst Galaxies, & Black Holes
Coordinates (J2000): RA: 6h 16m 22.1s | Dec: -21° 22′ 22"
Constellation: Canis Major
Observation Date(s): 4 observations from July 2010 to August 2013
Observation Time: 17 hours 20 minutes
Obs. IDs: 11228, 14914, 14799, 14915
Instrument: ACIS
Color Code: X-ray: blue; Infrared: white, red, green, and blue
Distance Estimate: About 130 million light-years from Earth


Tuesday, November 30, 2021

ESO telescope uncovers closest pair of supermassive black holes yet

Close-up and wide views of the nearest pair of supermassive black holes 
 
Close-up view of the nearest pair of supermassive black holes 
 
Bumps in the heavens 
 
Wide-field view of the region of the sky hosting NGC 7727


Videos

Supermassive Black Holes on a Collision Course (ESOcast 246 Light)
Supermassive Black Holes on a Collision Course (ESOcast 246 Light)
 
Journey to the closest pair of supermassive black holes
Journey to the closest pair of supermassive black holes 
 
How MUSE uncovered the closest pair of supermassive black holes
How MUSE uncovered the closest pair of supermassive black holes




Using the European Southern Observatory’s Very Large Telescope (ESO’s VLT), astronomers have revealed the closest pair of supermassive black holes to Earth ever observed. The two objects also have a much smaller separation than any other previously spotted pair of supermassive black holes and will eventually merge into one giant black hole.

Located in the galaxy NGC 7727 in the constellation Aquarius, the supermassive black hole pair is about 89 million light-years away from Earth. Although this may seem distant, it beats the previous record of 470 million light-years by quite some margin, making the newfound supermassive black hole pair the closest to us yet.  

Supermassive black holes lurk at the centre of massive galaxies and when two such galaxies merge, the black holes end up on a collision course. The pair in NGC 7727 beat the record for the smallest separation between two supermassive black holes, as they are observed to be just 1600 light-years apart in the sky. “It is the first time we find two supermassive black holes that are this close to each other, less than half the separation of the previous record holder,” says Karina Voggel, an astronomer at the Strasbourg Observatory in France and lead author of the study published online today in Astronomy & Astrophysics.

“The small separation and velocity of the two black holes indicate that they will merge into one monster black hole, probably within the next 250 million years,” adds co-author Holger Baumgardt, a professor at the University of Queensland, Australia. The merging of black holes like these could explain how the most massive black holes in the Universe come to be.

Voggel and her team were able to determine the masses of the two objects by looking at how the gravitational pull of the black holes influences the motion of the stars around them. The bigger black hole, located right at the core of NGC 7727, was found to have a mass almost 154 million times that of the Sun, while its companion is 6.3 million solar masses.

It is the first time the masses have been measured in this way for a supermassive black hole pair. This feat was made possible thanks to the close proximity of the system to Earth and the detailed observations the team obtained at the Paranal Observatory in Chile using the Multi-Unit Spectroscopic Explorer (MUSE) on ESO’s VLT, an instrument Voggel learnt to work with during her time as a student at ESO. Measuring the masses with MUSE, and using additional data from the NASA/ESA Hubble Space Telescope, allowed the team to confirm that the objects in NGC 7727 were indeed supermassive black holes.

Astronomers suspected that the galaxy hosted the two black holes, but they had not been able to confirm their presence until now since we do not see large amounts of high-energy radiation coming from their immediate surroundings, which would otherwise give them away. “Our finding implies that there might be many more of these relics of galaxy mergers out there and they may contain many hidden massive black holes that still wait to be found,says Voggel. “It could increase the total number of supermassive black holes known in the local Universe by 30 percent.”

The search for similarly hidden supermassive black hole pairs is expected to make a great leap forward with ESO’s Extremely Large Telescope (ELT), set to start operating later this decade in Chile’s Atacama Desert. “This detection of a supermassive black hole pair is just the beginning,” says co-author Steffen Mieske, an astronomer at ESO in Chile and Head of ESO Paranal Science Operations. “With the HARMONI instrument on the ELT we will be able to make detections like this considerably further than currently possible. ESO’s ELT will be integral to understanding these objects.”




More Information

This research was presented in a paper titled "First Direct Dynamical Detection of a Dual Super-Massive Black Hole System at sub-kpc Separation" to appear in Astronomy & Astrophysics (doi: 10.1051/0004-6361/202140827).

The team is composed of Karina T. Voggel (Université de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, France), Anil C. Seth (University of Utah, Salt Lake City, USA [UofU]), Holger Baumgardt (School of Mathematics and Physics, University of Queensland, St. Lucia, Australia), Bernd Husemann (Max-Planck-Institut für Astronomie, Heidelberg, Germany [MPIA]), Nadine Neumayer (MPIA), Michael Hilker (European Southern Observatory, Garching bei München, Germany), Renuka Pechetti (Astrophysics Research Institute, Liverpool John Moores University, Liverpool, UK), Steffen Mieske (European Southern Observatory, Santiago de Chile, Chile), Antoine Dumont (UofU), and Iskren Georgiev (MPIA).

The European Southern Observatory (ESO) enables scientists worldwide to discover the secrets of the Universe for the benefit of all. We design, build and operate world-class observatories on the ground — which astronomers use to tackle exciting questions and spread the fascination of astronomy — and promote international collaboration in astronomy. Established as an intergovernmental organisation in 1962, today ESO is supported by 16 Member States (Austria, Belgium, the Czech Republic, Denmark, France, Finland, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland and the United Kingdom), along with the host state of Chile and with Australia as a Strategic Partner. ESO’s headquarters and its visitor centre and planetarium, the ESO Supernova, are located close to Munich in Germany, while the Chilean Atacama Desert, a marvellous place with unique conditions to observe the sky, hosts our telescopes. ESO operates three observing sites: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope and its Very Large Telescope Interferometer, as well as two survey telescopes, VISTA working in the infrared and the visible-light VLT Survey Telescope. Also at Paranal ESO will host and operate the Cherenkov Telescope Array South, the world’s largest and most sensitive gamma-ray observatory. Together with international partners, ESO operates APEX and ALMA on Chajnantor, two facilities that observe the skies in the millimetre and submillimetre range. At Cerro Armazones, near Paranal, we are building “the world’s biggest eye on the sky” — ESO’s Extremely Large Telescope. From our offices in Santiago, Chile we support our operations in the country and engage with Chilean partners and society.




Links




Contacts 

Karina Voggel
Strasbourg Observatory, University of Strasbourg
Strasbourg, France
Email:
karina.voggel@astro.unistra.fr

Holger Baumgardt
School of Mathematics and Physics, University of Queensland
St. Lucia, Queensland, Australia
Tel: +61 (0)7 3365 3430
Email:
h.baumgardt@uq.edu.au

Steffen Mieske
European Southern Observatory
Vitacura, Santiago, Chile
Tel: +56 22 463 3060
Email:
smieske@eso.org

Bárbara Ferreira
ESO Media Manager
Garching bei München, Germany
Tel: +49 89 3200 6670
Cell: +49 151 241 664 00
Email:
press@eso.org

Source: ESO/News