From Wikipedia, the free encyclopedia
Galaxy cluster in the constellation Volans
SMACS J0723.3–7327 , commonly referred to as SMACS 0723 , is a
galaxy cluster about 4 billion light years from Earth,
[2] within the southern
constellation of
Volans (
RA/Dec = 110.8375, −73.4391667).
[6]
[7]
[8]
[9] It is a patch of sky visible from the
Southern Hemisphere on
Earth and often observed by the
Hubble Space Telescope and other telescopes in search of the deep past.
[2] It was the target of the
first full-color image to be unveiled by the
James Webb Space Telescope (JWST), imaged using
NIRCam , with
spectra included, showing objects lensed by the cluster with
redshifts implying they are 13.1 billion years old.
[10] The cluster has been previously observed by the
Hubble Space Telescope (HST) as part of the
Southern MAssive Cluster Survey (SMACS),
[11] as well as
Planck
[12] and
Chandra .
[13]
In 2022, in the field
gravitationally lensed by SMAC 0723, some of the then most ancient massive star clusters were discovered in a lensed galaxy called the "Sparkler Galaxy",
[21] possibly containing
population III stars .[
citation needed ]
References
^
a
b
c Coe, Dan; Salmon, Brett; Bradač, Maruša (October 2019).
"RELICS: Reionization Lensing Cluster Survey" . Astrophysical Journal . 884 (1): 85.
arXiv :
1903.02002 .
Bibcode :
2019ApJ...884...85C .
doi :
10.3847/1538-4357/ab412b .
S2CID
119041205 .
^
a
b
c Overbye, Dennis; Chang, Kenneth; Tankersley, Jim (11 July 2022).
"Biden and NASA Share First Webb Space Telescope Image" . The New York Times .
ISSN
0362-4331 . Retrieved 12 July 2022 .
^
"PSZ1 G284.97-23.69" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 11 July 2022 .
^
"PLCKESZ G284.99-23.70" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 11 July 2022 .
^
"SMACS J0723.3-7327" . NASA/IPAC Extragalactic Database.
^ WRAL (10 July 2022).
"SMACS J0723.3-7327" . WRAL.com . Retrieved 12 July 2022 .
^
"Astronomers eagerly await first images from the James Webb Space Telescope" .
CBS News . 11 July 2022. Retrieved 12 July 2022 .
^
"SRELICS" . irsa.ipac.caltech.edu . Retrieved 12 July 2022 .
^
"RELICS: Reionization Lensing Cluster Survey" . archive.stsci.edu . Retrieved 12 July 2022 .
^
"Webb's First Deep Field (NIRSpec MSA Emission Spectra)" . WebbTelescope.org . Retrieved 14 July 2022 .
^ Repp, A.; Ebeling, H. (September 2018). "Science from a glimpse: Hubble SNAPshot observations of massive galaxy clusters". Monthly Notices of the Royal Astronomical Society . 479 (1): 844–864.
arXiv :
1706.01263 .
Bibcode :
2018MNRAS.479..844R .
doi :
10.1093/mnras/sty1489 .
^
"PSZ1 G284.97-23.69" . simbad.u-strasbg.fr . Retrieved 12 July 2022 .
^ CXC-DS (2015).
"Chandra Data Archive: Search Results" . Chandra X-ray Center/SAO .
doi :
10.25574/15296 .
^ Chow, Denise; Wu, Jiachuan (12 July 2022).
"Photos: How pictures from the Webb telescope compare to Hubble's - NASA's $10 billion telescope peers deeper into space than ever, revealing previously undetectable details in the cosmos" .
NBC News . Retrieved 16 July 2022 .
^ Garner, Rob (11 July 2022).
"NASA's Webb Delivers Deepest Infrared Image of Universe Yet" .
NASA .
Archived from the original on 12 July 2022. Retrieved 12 July 2022 .
^ Overbye, Dennis; Chang, Kenneth; Tankersley, Jim (11 July 2022).
"Biden and NASA Share First Webb Space Telescope Image – From the White House on Monday, humanity got its first glimpse of what the observatory in space has been seeing: a cluster of early galaxies" .
The New York Times .
Archived from the original on 12 July 2022. Retrieved 12 July 2022 .
^ Pacucci, Fabio (15 July 2022).
"How Taking Pictures of 'Nothing' Changed Astronomy - Deep-field images of "empty" regions of the sky from Webb and other space telescopes are revealing more of the universe than we ever thought possible" .
Scientific American . Retrieved 16 July 2022 .
^ Deliso, Meredith; Longo, Meredith; Rothenberg, Nicolas (14 July 2022).
"Hubble vs. James Webb telescope images: See the difference" .
ABC News . Retrieved 15 July 2022 .
^ Kooser, Amanda (13 July 2012).
"Hubble and James Webb Space Telescope Images Compared: See the Difference - The James Webb Space Telescope builds on Hubble's legacy with stunning new views of the cosmos" .
CNET . Retrieved 16 July 2022 .
^ Atkinson, Nancy (2 May 2022).
"Now, We can Finally Compare Webb to Other Infrared Observatories" .
Universe Today .
Archived from the original on 10 May 2022. Retrieved 12 May 2022 .
^ Robert Lea (29 September 2022).
"James Webb Space Telescope spots 'Sparkler Galaxy' that could host universe's 1st stars" . SPACE.com.
External links