APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

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APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by APOD Robot » Mon Sep 05, 2022 4:06 am

Image Carina Cliffs from the Webb Space Telescope

Explanation: Stars created these cliffs. Specifically, the destructive winds and energetic light from the stars in the open cluster NGC 3324 eroded away part of a mountain of dark interstellar dust in the northern part of the Carina Nebula. Several of these stars are visible toward the top of this highly detailed image taken recently by the James Webb Space Telescope, the largest astronomical telescope ever launched. Webb's large mirror and ability to see dust-piercing infrared light has enabled it to capture fascinating details in the dust, hundreds of previously hidden stars, and even some galaxies far in the distance. The featured jagged cliffs occur in part of Carina known as the Gabriela Mistral Nebula -- because when viewed in another orientation, they appear similar to the facial profile of the famous Chilean poet. These nebular cliffs occur about 7,600 light years away toward the southern constellation of Carina.

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by VictorBorun » Mon Sep 05, 2022 9:21 am

can't see any galaxies behind the dust

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Chris Peterson » Mon Sep 05, 2022 1:15 pm

VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I see several distant galaxies both through the dusty area as well as above it.
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by orin stepanek » Mon Sep 05, 2022 2:39 pm

CarinaCliffs_Webb_1080.jpg
Carina Cliffs! 8-)
CarinaWideField_Willasch_1080.jpg
Carina Nebula; Very nice! :D
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by johnnydeep » Mon Sep 05, 2022 3:14 pm

Chris Peterson wrote: Mon Sep 05, 2022 1:15 pm
VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I see several distant galaxies both through the dusty area as well as above it.
They're touch to spot. I found a few in the blacker and bluer areas, and even one or two in the dustiest parts. This one at least seems certain to be a galaxy:

background galaxy in carina nebula dust.JPG
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Sa Ji Tario » Mon Sep 05, 2022 3:28 pm

VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I counted 8, there is one to the left of the letter "C" of CSA

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Chris Peterson » Mon Sep 05, 2022 5:05 pm

Sa Ji Tario wrote: Mon Sep 05, 2022 3:28 pm
VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I counted 8, there is one to the left of the letter "C" of CSA
I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by VictorBorun » Mon Sep 05, 2022 5:05 pm

peculiar U-shapes of some threads
CarinaCliffs_Webb_2000-.jpg
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by VictorBorun » Mon Sep 05, 2022 5:09 pm

johnnydeep wrote: Mon Sep 05, 2022 3:14 pm
Chris Peterson wrote: Mon Sep 05, 2022 1:15 pm
VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I see several distant galaxies both through the dusty area as well as above it.
They're touch to spot. I found a few in the blacker and bluer areas, and even one or two in the dustiest parts. This one at least seems certain to be a galaxy:


background galaxy in carina nebula dust.JPG
this one is good. A sure galaxy behind a sure dust cloud

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by VictorBorun » Mon Sep 05, 2022 5:12 pm

Chris Peterson wrote: Mon Sep 05, 2022 5:05 pm
Sa Ji Tario wrote: Mon Sep 05, 2022 3:28 pm
VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I counted 8, there is one to the left of the letter "C" of CSA
I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
Do they count as
dust-piercing infrared light has enabled it to capture fascinating details in the dust, hundreds of previously hidden stars, and even some galaxies far in the distance
?
Or just the one in the middle does?

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Chris Peterson » Mon Sep 05, 2022 5:21 pm

VictorBorun wrote: Mon Sep 05, 2022 5:12 pm
Chris Peterson wrote: Mon Sep 05, 2022 5:05 pm
Sa Ji Tario wrote: Mon Sep 05, 2022 3:28 pm

I counted 8, there is one to the left of the letter "C" of CSA
I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
Do they count as
dust-piercing infrared light has enabled it to capture fascinating details in the dust, hundreds of previously hidden stars, and even some galaxies far in the distance
?
Or just the one in the middle does?
Well, every background object in this image is shining through dust, it's just a question of how thick the dust is (in optical light, even the area on top is nearly opaque). It's tricky finding galaxies in the dust because the dust is colored similarly and contains fine structure, both of which serve to obscure them to casual examination. The way to identify them is to push a single channel through a tool like SExtractor, which is very good at separating stars from galaxies given their different profiles (stars being fit to a Moffat distribution, but not galaxies). I'm sure such an approach would pull quite a few more galaxies out from the dustier areas.
Chris

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by bystander » Mon Sep 05, 2022 6:13 pm

Cosmic Cliffs in the Carina Nebula Sonifications
Webb Space Telescope | 2022 Aug 31
Click to play embedded YouTube video.
New sonifications map a near-infrared image of the Cosmic Cliffs in the Carina Nebula, captured by NASA’s JWST, to a symphony of sounds. Musicians assigned unique notes to the semi-transparent, gauzy regions and very dense areas of gas and dust in the nebula, culminating in a buzzing soundscape.

The sonification scans the image from left to right. The new sounds were also adapted to a video, allowing sighted viewers to watch as a vertical line moves across the frame.

The soundtrack is vibrant and full, representing the detail in this gigantic, gaseous cavity that has the appearance of a mountain range. The Carina Nebula is a large cloud of gas and dust where stars are forming or have already formed.

The gas and dust in the top half of the image are represented in blue hues and windy, drone-like sounds. The bottom half of the image, represented in ruddy shades of orange and red, has a clearer, more melodic composition. ...
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by johnnydeep » Mon Sep 05, 2022 6:54 pm

Chris Peterson wrote: Mon Sep 05, 2022 5:05 pm
Sa Ji Tario wrote: Mon Sep 05, 2022 3:28 pm
VictorBorun wrote: Mon Sep 05, 2022 9:21 am can't see any galaxies behind the dust
I counted 8, there is one to the left of the letter "C" of CSA
I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
Show off :-) How about these two possibilities?

background galaxy in carina nebula dust 2.JPG
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Chris Peterson » Mon Sep 05, 2022 6:57 pm

johnnydeep wrote: Mon Sep 05, 2022 6:54 pm
Chris Peterson wrote: Mon Sep 05, 2022 5:05 pm
Sa Ji Tario wrote: Mon Sep 05, 2022 3:28 pm

I counted 8, there is one to the left of the letter "C" of CSA
I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
Show off :-) How about these two possibilities?


background galaxy in carina nebula dust 2.JPG
Based on color and shape I'm more inclined to say they're bits of reflection nebulas.
Chris

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by johnnydeep » Mon Sep 05, 2022 7:06 pm

Chris Peterson wrote: Mon Sep 05, 2022 6:57 pm
johnnydeep wrote: Mon Sep 05, 2022 6:54 pm
Chris Peterson wrote: Mon Sep 05, 2022 5:05 pm

I spent about 10 minutes and got 25 definite or probable galaxies.
_
CarinaCliffs_Webb_2000_gal.jpg
Show off :-) How about these two possibilities?


background galaxy in carina nebula dust 2.JPG
Based on color and shape I'm more inclined to say they're bits of reflection nebulas.
I can see that for the upper one, but the lower one looks more distinctly like the tell-tale symmetrically oblong obnubilation of a galaxy.
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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Chris Peterson » Mon Sep 05, 2022 7:18 pm

johnnydeep wrote: Mon Sep 05, 2022 7:06 pm
Chris Peterson wrote: Mon Sep 05, 2022 6:57 pm
johnnydeep wrote: Mon Sep 05, 2022 6:54 pm

Show off :-) How about these two possibilities?


background galaxy in carina nebula dust 2.JPG
Based on color and shape I'm more inclined to say they're bits of reflection nebulas.
I can see that for the upper one, but the lower one looks more distinctly like the tell-tale symmetrically oblong obnubilation of a galaxy.
Well, there's dust all through there, and it's right next to a bright star. And exactly the same color as all the other bits of reflection in there. And I'd expect it to be redshifted to an orange color as we see in other galaxies in the image.
Chris

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by johnnydeep » Mon Sep 05, 2022 7:33 pm

Chris Peterson wrote: Mon Sep 05, 2022 7:18 pm
johnnydeep wrote: Mon Sep 05, 2022 7:06 pm
Chris Peterson wrote: Mon Sep 05, 2022 6:57 pm
Based on color and shape I'm more inclined to say they're bits of reflection nebulas.
I can see that for the upper one, but the lower one looks more distinctly like the tell-tale symmetrically oblong obnubilation of a galaxy.
Well, there's dust all through there, and it's right next to a bright star. And exactly the same color as all the other bits of reflection in there. And I'd expect it to be redshifted to an orange color as we see in other galaxies in the image.
I suppose.
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Not her nose, his nose

Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Not her nose, his nose » Mon Sep 05, 2022 10:05 pm

With total respect to Gabriela Mistral, her namesake nebula Image has a much more rounded nose than her Image and to me it looks a lot more like the Alfred Hitchcock nebula Image.

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Re: APOD: Carina Cliffs from the Webb Space... (2022 Sep 05)

Post by Rauf » Wed Sep 21, 2022 11:14 am

Not her nose, his nose wrote: Mon Sep 05, 2022 10:05 pm With total respect to Gabriela Mistral, her namesake nebula Image has a much more rounded nose than her Image and to me it looks a lot more like the Alfred Hitchcock nebula Image.
I can't unsee it now...