JWST & HST examine galaxy pair IC 2163 & NGC 2207

Find out the latest thinking about our universe.
User avatar
AVAO
Commander
Posts: 802
Joined: Tue May 28, 2019 12:24 pm
AKA: multiwavelength traveller
Location: Zurich, Switzerland

JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by AVAO » Sat Nov 09, 2024 1:09 pm

Webb and Hubble examine spooky galaxy pair
space.com | Original release 2024 October 31
[...]
This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years.

The James Webb Space Telescope (JWST) and Hubble Space Telescope teamed up to image two spiral galaxies known as IC 2163 and NGC 2207 as they appeared millions of years ago. That's because the pair of colliding galaxies resides some 80 million light-years away in the Canis Major constellation. This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years. "Stare deeply at these galaxies," the JWST team wrote in a statement accompanying the new images. "They appear as if blood is pumping through the top of a flesh-free face. The long, ghastly 'stare' of their searing eye-like cores shines out into the supreme cosmic darkness."
[...]
"The galaxies’ first pass may have also distorted their delicately curved arms, pulling out tidal extensions in several places. The diffuse, tiny spiral arms between IC 2163’s core and its far left arm may be an example of this activity. Even more tendrils look like they’re hanging between the galaxies’ cores. Another extension ‘drifts’ off the top of the larger galaxy, forming a thin, semi-transparent arm that practically runs off screen." NASA/ESA
[...]
The very blue spot on the HST picture (bottom right), known as future eye, is a hub of rapid star formation on the outer arm of NGC 2207 glowing even more brightly (espacially in IR) than the galaxy’s core.

... read more
... slider
... bigg

My Universe Hub New APOD-Image-Search

BSN4Y Jac
Last edited by AVAO on Sun Nov 10, 2024 12:11 pm, edited 1 time in total.

User avatar
Ann
4725 Å
Posts: 13863
Joined: Sat May 29, 2010 5:33 am

Re: JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by Ann » Sun Nov 10, 2024 8:06 am

AVAO wrote: Sat Nov 09, 2024 1:09 pm Webb and Hubble examine spooky galaxy pair
space.com | Original release 2024 October 31
[...]
This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years.

The James Webb Space Telescope (JWST) and Hubble Space Telescope teamed up to image two spiral galaxies known as IC 2163 and NGC 2207 as they appeared millions of years ago. That's because the pair of colliding galaxies resides some 80 million light-years away in the Canis Major constellation. This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years. "Stare deeply at these galaxies," the JWST team wrote in a statement accompanying the new images. "They appear as if blood is pumping through the top of a flesh-free face. The long, ghastly 'stare' of their searing eye-like cores shines out into the supreme cosmic darkness."
[...]
"The galaxies’ first pass may have also distorted their delicately curved arms, pulling out tidal extensions in several places. The diffuse, tiny spiral arms between IC 2163’s core and its far left arm may be an example of this activity. Even more tendrils look like they’re hanging between the galaxies’ cores. Another extension ‘drifts’ off the top of the larger galaxy, forming a thin, semi-transparent arm that practically runs off screen." NASA/ESA
[...]
The very blue spot on the HST picture (bottom right), known as future eye, is a hub of rapid star formation on the outer arm of NGC 2207 glowing even more brightly (espacially in IR) than the galaxy’s core.

... read more
... slider
... bigg

BSN4Y Jac
Thank you so much for the slider image in particular, Jac!

NGC 2207 and IC 2163 is such an interesting pair. I remember when I firs saw it the Hubble picture of them (back in 1999) that I thought that NGC 2207 looked "patchy". Its arms seemed to consist of bright blue patches of large bright clusters, and then pretty much "nothing" in between. Admittedly though, Hubble did a good job of bringing out the faint arm population connecting the bright clusters.


In a newly released Hubble image though, NGC 2207 looks even patchier, and the faint intermediate to old armpopulation appears to be almost gone:


I'm reminded of what James D Wray, in his Color Atlas of Galaxies, said about galaxy NGC 3486: The bright intermediate population appears to be almost absent in this galaxy.


IC 2163, by contrast, has two bright continuous arms that make the galaxy look like an Egyptian eye (minus the stuff above and below the eye).

il_fullxfull.3495650577_1cpf[1].jpg
Eye of Horus amulet. Photo credit: I don't know.

Interestingly, the slider image shows the dust lanes in the inner arms of IC 2163 to be thicker, brighter and far more continuous in IR than the arms of NGC 2207. I couldn't copy the slider, but here they are, the Hubble and JWST images side by side:


Ann
You do not have the required permissions to view the files attached to this post.
Color Commentator

User avatar
AVAO
Commander
Posts: 802
Joined: Tue May 28, 2019 12:24 pm
AKA: multiwavelength traveller
Location: Zurich, Switzerland

Re: JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by AVAO » Sun Nov 10, 2024 12:21 pm

Ann wrote: Sun Nov 10, 2024 8:06 am
AVAO wrote: Sat Nov 09, 2024 1:09 pm Webb and Hubble examine spooky galaxy pair
space.com | Original release 2024 October 31
[...]
This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years.

The James Webb Space Telescope (JWST) and Hubble Space Telescope teamed up to image two spiral galaxies known as IC 2163 and NGC 2207 as they appeared millions of years ago. That's because the pair of colliding galaxies resides some 80 million light-years away in the Canis Major constellation. This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years. "Stare deeply at these galaxies," the JWST team wrote in a statement accompanying the new images. "They appear as if blood is pumping through the top of a flesh-free face. The long, ghastly 'stare' of their searing eye-like cores shines out into the supreme cosmic darkness."
[...]
"The galaxies’ first pass may have also distorted their delicately curved arms, pulling out tidal extensions in several places. The diffuse, tiny spiral arms between IC 2163’s core and its far left arm may be an example of this activity. Even more tendrils look like they’re hanging between the galaxies’ cores. Another extension ‘drifts’ off the top of the larger galaxy, forming a thin, semi-transparent arm that practically runs off screen." NASA/ESA
[...]
The very blue spot on the HST picture (bottom right), known as future eye, is a hub of rapid star formation on the outer arm of NGC 2207 glowing even more brightly (espacially in IR) than the galaxy’s core.

... read more
... slider
... bigg

My Universe Hub New APOD-Image-Search


BSN4Y Jac
Thank you so much for the slider image in particular, Jac!

NGC 2207 and IC 2163 is such an interesting pair. I remember when I firs saw it the Hubble picture of them (back in 1999) that I thought that NGC 2207 looked "patchy". Its arms seemed to consist of bright blue patches of large bright clusters, and then pretty much "nothing" in between. Admittedly though, Hubble did a good job of bringing out the faint arm population connecting the bright clusters.


In a newly released Hubble image though, NGC 2207 looks even patchier, and the faint intermediate to old armpopulation appears to be almost gone:


I'm reminded of what James D Wray, in his Color Atlas of Galaxies, said about galaxy NGC 3486: The bright intermediate population appears to be almost absent in this galaxy.


IC 2163, by contrast, has two bright continuous arms that make the galaxy look like an Egyptian eye (minus the stuff above and below the eye).

il_fullxfull.3495650577_1cpf[1].jpg
Eye of Horus amulet. Photo credit: I don't know.

Interestingly, the slider image shows the dust lanes in the inner arms of IC 2163 to be thicker, brighter and far more continuous in IR than the arms of NGC 2207. I couldn't copy the slider, but here they are, the Hubble and JWST images side by side:


Ann

ThanX Ann

Your exciting comparisons are always a highlight in this forum. The idea of ​​the comparison with the "Eye of Horus" is also very cool.

But what always irritates me about overlapping galaxies is the fact that the bright and blue stars of the foreground galaxy dissolve into nothingness in the white transmitted light of the galaxy behind them.

Jac


My Universe Hub New APOD-Image-Search

User avatar
Ann
4725 Å
Posts: 13863
Joined: Sat May 29, 2010 5:33 am

Re: JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by Ann » Sun Nov 10, 2024 12:31 pm

AVAO wrote: Sun Nov 10, 2024 12:21 pm
ThanX Ann

Your exciting comparisons are always a highlight in this forum. The idea of ​​the comparison with the "Eye of Horus" is also very cool.

But what always irritates me about overlapping galaxies is the fact that the bright and blue stars of the foreground galaxy dissolve into nothingness in the white transmitted light of the galaxy behind them.

Jac


My Universe Hub New APOD-Image-Search
Not sure I understand what you mean by "the bright and blue stars of the foreground galaxy dissolve into nothingness in the white transmitted light of the galaxy behind them".

Of course, I know for a fact that blue stars are sometimes shown as blue, and sometimes they are not!

Ann
Color Commentator

User avatar
AVAO
Commander
Posts: 802
Joined: Tue May 28, 2019 12:24 pm
AKA: multiwavelength traveller
Location: Zurich, Switzerland

Re: JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by AVAO » Mon Nov 11, 2024 5:51 pm

Very bright star clusters still remain visible. Normal brighter individual stars "dissolve" in the light of the background galaxy.
You do not have the required permissions to view the files attached to this post.
Last edited by AVAO on Mon Nov 11, 2024 5:57 pm, edited 2 times in total.

User avatar
AVAO
Commander
Posts: 802
Joined: Tue May 28, 2019 12:24 pm
AKA: multiwavelength traveller
Location: Zurich, Switzerland

Re: JWST & HST examine galaxy pair IC 2163 & NGC 2207

Post by AVAO » Mon Nov 11, 2024 5:53 pm

AVAO wrote: Mon Nov 11, 2024 5:51 pmEx:
You do not have the required permissions to view the files attached to this post.