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Webb targets for October 10th - 12th include: dust nebulae and protostars
https://www.stsci.edu/files/live/sites/ … 221010.txt
'I am now observing PHAETHON using NIRSpec Fixed Slit Spectroscopy for 24 minutes. Keywords: Asteroid. Proposal'
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How JWST will reveal our Solar System beyond Neptune
https://www.planetary.org/articles/jwst … lt-objects
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The iconic NASA's Hubble Space Telescope image made the Pillars of Creation famous but now Webb appear to be able to look right through the dust and clouds
NASA’s Webb Takes Star-Filled Portrait of Pillars of Creation
https://www.nasa.gov/feature/goddard/20 … f-creation
Vid Tour
https://www.youtube.com/watch?v=1__KBHIo_xs
Webb Takes a Stunning, Star-Filled Portrait of the Pillars of Creation
https://esawebb.org/news/weic2216/
‘Bit of Panic’: Astronomers Forced to Rethink Early JWST Findings
Revised calibrations for the James Webb Space Telescope’s instruments are bedeviling researchers studying the distant universe
https://www.scientificamerican.com/arti … -findings/
Astronomers have been so keen to use the new James Webb Space Telescope that some have got a little ahead of themselves. Many started analysing Webb data right after the first batch was released, on 14 July, and quickly posted their results on preprint servers—but are now having to revise them. The telescope’s detectors had not been calibrated thoroughly when the first data were made available, and that fact slipped past some astronomers in their excitement.
The revisions don’t so far appear to substantially change many of the exciting early results, such as the discovery of a number of candidates for the most distant galaxy ever spotted. But the ongoing calibration process is forcing astronomers to reckon with the limitations of early data from Webb.
Figuring out how to redo the work is “thorny and annoying”, says Marco Castellano, an astronomer at the Italian National Institute of Astrophysics in Rome. “There’s been a lot of frustration,” says Garth Illingworth, an astronomer at the University of California, Santa Cruz. “I don’t think anybody really expected this to be as big of an issue as it’s becoming,” adds Guido Roberts-Borsani, an astronomer at the University of California, Los Angeles.
Calibration is particularly challenging for projects that require precise measurements of the brightness of astronomical objects, such as faint, faraway galaxies. For several weeks, some astronomers have been cobbling together workarounds so that they can continue their analyses. The next official round of updates to Webb’s calibrations are expected in the coming weeks from the Space Telescope Science Institute (STScI) in Baltimore, Maryland, which operates the telescope. Those updates should shrink the error bars on the telescope’s calibrations from the tens of percentage points that have been bedevilling astronomers in some areas, down to just a few percentage points. And data accuracy will continue to improve as calibration efforts proceed over the coming months.
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A good friend points the way. Thanks for showing us the sights
https://twitter.com/NASAWebb/status/1582765854034231301
Switch between these two views of the Pillars of Creation taken by HUBBLE_space and Webb using our interactive slider tool
https://twitter.com/ESA_Webb/status/1583065550468829185
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JWST spots smallest galaxy outside our local universe
https://www.newscientist.com/article/23 … -universe/
Chandra's X-ray vision combined with JWST reveals even more details about the universe
https://phys.org/news/2022-10-chandra-x … -jwst.html
JWST explores a pair of merging galaxies
https://esawebb.org/images/potm2210a/
New Webb images illuminate the formation of a galaxy cluster
https://arstechnica.com/science/2022/10 … ears-away/
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Webb and Hubble Peer Into the Wreckage of a Galactic Collision
https://www.universetoday.com/158312/we … collision/
Earlier this month we asked, what could be better than a pair of galaxies observed by a pair of iconic space telescopes? Now, there is an exciting new answer. Even better than a pair of galaxies is a pair of galaxies that are colliding!
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Haunting Portrait: NASA’s Webb Reveals Dust, Structure in Pillars of Creation
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The large spiral galaxy at the base of this image is named LEDA 2046648, and it is situated a little over a billion light-years from Earth, in the constellation Hercules.
https://twitter.com/ESA_Webb/status/1620346631873855488
This is Webb's 1st look at a stellar occultation (when a foreground object passes in front of a star from our viewpoint on Earth). The moving object here is Chariklo, a small icy body between Saturn and Uranus, and the star is at the center.
https://twitter.com/NASAWebb/status/1618288417191694341
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'Powerful Cosmic Rays'
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NIRISS Has Returned to Science Operations
https://www.stsci.edu/contents/news/jws … operations
stunning views of “PHANGS” galaxies
https://www.youtube.com/watch?v=_rAe22-SvMs
JWST sees ‘field of galaxies’ in 4K
https://www.youtube.com/watch?v=ccQG_51mPAU
Webb detects extremely small main-belt asteroid
https://www.esa.int/Science_Exploration … t_asteroid
A previously unknown 100–200-metre asteroid — roughly the size of Rome’s Colosseum — has been detected by an international team of European astronomers using the NASA/ESA/CSA James Webb Space Telescope. Their project used data from the calibration of the Mid-InfraRed Instrument (MIRI), in which the team serendipitously detected an interloping asteroid. The object is likely the smallest observed to date by Webb and may be an example of an object measuring under 1 kilometer in length within the main asteroid belt, located between Mars and Jupiter. More observations are needed to better characterize this object’s nature and properties.
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Webb Spots Super Old, Massive Galaxies That Shouldn’t Exist
https://spaceref.com/science-and-explor … dnt-exist/
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James Webb Space Telescope 'sees triple' with help from Einstein (photos)
https://www.space.com/james-webb-space- … axy-photos
Using gravitational lensing and a massive galaxy cluster located 3.2 billion light-years away the powerful space telescope replicated a distant galaxy three times in a single image.
Last edited by Mars_B4_Moon (2023-03-10 04:36:17)
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James Webb spies newborn stars carving out voids in nearby spiral galaxy.
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New quiescent galaxy discovered with JWST
https://phys.org/news/2023-03-quiescent-galaxy-jwst.amp
Using the James Webb Space Telescope (JWST), an international team of astronomers has discovered a new quiescent galaxy. The galaxy, designated JADES-GS+53.15508-27.80178, was found at a high redshift and has a relatively low mass. The finding is reported in a paper published February 27 on the pre-print server arXiv.
Many massive galaxies are quiescent, therefore showing little signs of ongoing star formation even at high redshifts and they are known to be physically compact. To date, only very few spectroscopically confirmed high-redshift (up to the redshift of 5.0) quiescent galaxies have been detected. Finding new galaxies of this type is of high importance for astronomers as these objects could advance our understanding about the early stages of the universe.
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Webb’s images of NGC 1365 (left), NGC 7496 (top) & NGC 1433 (bottom) reveal the galaxies' networks of gas and dust in incredible detail. The data is part of an ongoing Webb survey of 19 spiral galaxies
https://twitter.com/NASAWebb/status/1626255726686380032
Learn more about LHS 475 b, Webb's first confirmed exoplanet here:
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Water and carbon monoxide have both been detected in the atmosphere
The Radio planet a young triple brown dwarf system located in the constellation Corvus approximately 69.0 light-years (21.2 parsecs) from the Sun.The system consists of the equal-mass binary VHS J1256–1257AB and the distant planetary-mass companion VHS 1256–1257 b.In 2022, a continuous radio emission from the radiation belts surrounding VHS J1256–1257 was detected.
https://doi.org/10.1051%2F0004-6361%2F202243940
VHS 1256–1257 b was first identified and documented by the 2MASS survey in 2015. It orbits at a distance of 102 ± 9 AU and has an estimated mass of approximately 19±5 Jupiter masses.
Observations with Hubble Wide-Field Camera 3 near-infrared time-series spectroscopic observations showed that VHS 1256 b varied with 19.3% at 1.1 and 1.7 μm over 8.5 hours.
https://ui.adsabs.harvard.edu/
The planet’s churning atmosphere constantly brings hotter material up and pushes colder material down, resulting in extremely dramatic brightness changes. In fact, VHS 1256 b is the most variable planetary-mass object known to date!
https://twitter.com/NASAWebb/status/1638543745346949125
Higher up in its atmosphere, Webb detected both larger & smaller silicate dust grains, which are shown on this spectrum.
Webb also made extraordinarily clear detections of water, methane and carbon monoxide and found evidence of carbon dioxide
https://twitter.com/ESA_Webb/status/1638543228386308096
Last edited by Mars_B4_Moon (2023-03-22 09:03:47)
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This time a news item. Another article
Silicate Clouds Observed On Exoplanet VHS 1256 b
https://spaceref.com/uncategorized/sili … hs-1256-b/
Last edited by Mars_B4_Moon (2023-03-22 13:22:31)
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Webb Telescope spots swirling, gritty clouds on remote planet in spectrum data
https://www.spacedaily.com/reports/Webb … a_999.html
Raw images
and they recently looked at Mars
'A sensitive search for rings and small moons in the Martian system using JWST'
https://jwstfeed.com/Home/
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Amazing info
It’s Time for Supernova Remnant Cassiopeia A to Get the JWST Treatment
https://www.universetoday.com/160883/it … treatment/
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JWST Sees Merging Galaxies Releasing the Light of a Trillion Suns
https://www.universetoday.com/160996/jw … lion-suns/
If we want to know what it’ll look like in about 4.5 billion years when our galaxy merges with Andromeda, we might take a look at ARP 220. ARP 220 is a pair of galaxies that are in the process of merging. The merging galaxies emit brilliant infrared light, and the James Webb Space Telescope captured that light in a vivid portrait.
ARP 220 is an Ultraluminous Infrared Galaxy (ULIRG), and it’s the closest one to Earth. This makes it a natural laboratory for studying galaxy mergers, and it also means that the JWST, with its powerful infrared capabilities, is ideally suited to studying it.
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Webb looks for Fomalhaut's asteroid belt and finds much more
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A Galaxy with a Glowing Core and a Hidden History
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The James Webb Space Telescope reveals a mysterious planet to be weirdly shiny
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James Webb telescope discovers gargantuan geyser on Saturn's moon, blasting water hundreds of miles into space
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