APOD: Young Suns of NGC 7129 (2016 Aug 29)

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APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by APOD Robot » Mon Aug 29, 2016 4:06 am

Image Young Suns of NGC 7129

Explanation: Young suns still lie within dusty NGC 7129, some 3,000 light-years away toward the royal constellation Cepheus. While these stars are at a relatively tender age, only a few million years old, it is likely that our own Sun formed in a similar stellar nursery some five billion years ago. Most noticeable in the sharp image are the lovely bluish dust clouds that reflect the youthful starlight. But the compact, deep red crescent shapes are also markers of energetic, young stellar objects. Known as Herbig-Haro objects, their shape and color is characteristic of glowing hydrogen gas shocked by jets streaming away from newborn stars. Paler, extended filaments of reddish emission mingling with the bluish clouds are caused by dust grains effectively converting the invisible ultraviolet starlight to visible red light through photoluminesence. Ultimately the natal gas and dust in the region will be dispersed, the stars drifting apart as the loose cluster orbits the center of the Galaxy. The processing of this remarkable composite image has revealed the faint red strands of emission at the upper right. They are recently recognized as a likely supernova remnant and are currently being analyzed by Bo Reipurth (Univ. Hawaii) who obtained the image data at the Subaru telescope. At the estimated distance of NGC 7129, this telescopic view spans over 40 light-years.

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Ann
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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Ann » Mon Aug 29, 2016 4:35 am

This is a delightful image full of fantastic shapes and lovely colors.

Ann
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heehaw

Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by heehaw » Mon Aug 29, 2016 8:48 am

It is indeed a delightful image! I've commented before that I am surprised at what 'appeals' to our human minds. Like everything else, that 'appeal' is produced by evolution. But it is only in recent years we've even HAD color (colour?) astronomical images to look at! I think it must be the resemblance of astronomical images to flowers that produces the result. But why do we humans like flowers so much? Flowers evolved to be 'attractive' to bees and to other insects, I think, not to humans. And that our minds, and insect minds, have tastes in common, seems unexpected.
Hmmmm! Why doesn't someone start a FSPOD (Flower-Show Picture of the Day)?

NCTom

Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by NCTom » Mon Aug 29, 2016 11:49 am

Are the circles around three of the yellowish stars results of the photo process?

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Chris Peterson » Mon Aug 29, 2016 2:18 pm

NCTom wrote:Are the circles around three of the yellowish stars results of the photo process?
Halos around the stars are instrumental artifacts- some combination of diffraction from the aperture and scattered light in the optical system. They may be made more apparent in the final image by the way that the contrast is stretched to enhance dim structure.
Chris

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by starsurfer » Mon Aug 29, 2016 2:43 pm

This is awesome cool! Despite having many Herbig Haro objects, amateurs don't ever seem to take Ha for this region, it doesn't surprise me (but also surprises me at the same time) that there is something unknown. There is also a supernova remnant near vdB152. Ha exposures for the Iris Nebula would also show extra stuff.

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by MarkBour » Mon Aug 29, 2016 4:17 pm

heehaw wrote:Hmmmm! Why doesn't someone start a FSPOD (Flower-Show Picture of the Day)?
There are flower-of-the-day sites, aren't there?
http://dailyflower.yakohl.com
https://www.facebook.com/rvbridgemanflowers/
a bit broader, but features plenty of flowers:
http://www.nationalgeographic.com/photo ... alifornia/
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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Boomer12k » Mon Aug 29, 2016 4:40 pm

At first, I thought this was M42, the Great Nebula in Orion.... it looks so similar.... there is even an intruding dust patch in the lower left side of the large nebula area.... like the Trapezium. And looks like some of the detailed wide angle images of M42.....

This is a very awesome image...
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RBRapha

Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by RBRapha » Mon Aug 29, 2016 6:13 pm

Today's APOD image could be named as "Nyan Cat".

Tekija

Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Tekija » Mon Aug 29, 2016 6:44 pm

heehaw wrote:It is indeed a delightful image! I've commented before that I am surprised at what 'appeals' to our human minds. Like everything else, that 'appeal' is produced by evolution. But it is only in recent years we've even HAD color (colour?) astronomical images to look at! I think it must be the resemblance of astronomical images to flowers that produces the result. But why do we humans like flowers so much? Flowers evolved to be 'attractive' to bees and to other insects, I think, not to humans. And that our minds, and insect minds, have tastes in common, seems unexpected.
Hmmmm! Why doesn't someone start a FSPOD (Flower-Show Picture of the Day)?
However, the bees (upper image) and many other insects see the flowers very differently from us (lover image) using the ultraviolet spectrum of Sol.

https://www.visualnews.com/2013/04/08/h ... f-flowers/

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Coil_Smoke » Mon Aug 29, 2016 6:53 pm

That is what APOD is all about. If you haven't triple clicked this image please do...WOW ! :shock:
http://apod.nasa.gov/apod/ap160829.html

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Fred the Cat » Mon Aug 29, 2016 9:22 pm

In open clusters you wonder why some don’t form "really" close together. Maybe they merge at times?
Freddy's Felicity "Only ascertain as a cat box survivor"

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Ann » Mon Aug 29, 2016 11:06 pm

MarkBour wrote:
heehaw wrote:Hmmmm! Why doesn't someone start a FSPOD (Flower-Show Picture of the Day)?
There are flower-of-the-day sites, aren't there?
http://dailyflower.yakohl.com
Wow, that cornflowers image by Rolf Kohl is just amazing! :D

Ann
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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Chris Peterson » Mon Aug 29, 2016 11:15 pm

Fred the Cat wrote:In open clusters you wonder why some don’t form "really" close together. Maybe they merge at times?
I think it takes unusual conditions for stars to form so close that their atmospheres touch, which is a requirement for them to merge. Stars tend to very quickly clear out the region around them of star-forming gas and dust, so unless the timing is nearly perfect, a pair of extremely close stars seems unlikely.
Chris

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Ann
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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Ann » Tue Aug 30, 2016 12:15 am

Fred the Cat wrote:In open clusters you wonder why some don’t form "really" close together. Maybe they merge at times?
Good point, Fred. Extremely massive stars are probably formed when two lesser but still very massive stars merge. A good example is R136a1, the most massive star known at 315 M. Of course, such supermassive stars are typically formed in dense clusters, or which R136a is a perfect (and somewhat extreme) example.

There has been speculation that there is 200 M black hole in the Orion Nebula, which would have formed through the mergers of massive stars.
Super star cluster in NGC 6946.
Photo: Adam Block. Inset: Gemini Telescope.
One of the most impressive young clusters I know of myself is the biggest cluster in NGC 6946. I used to be able to find a really fine picture of it, but now it's gone. This picture is nowhere near as good, but you can see the brilliance of the cluster heart. There should be some massive stars in there, and some amazing merger products!

Ann
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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by starsurfer » Thu Sep 01, 2016 12:41 pm

Ann wrote:
Fred the Cat wrote:In open clusters you wonder why some don’t form "really" close together. Maybe they merge at times?
Good point, Fred. Extremely massive stars are probably formed when two lesser but still very massive stars merge. A good example is R136a1, the most massive star known at 315 M. Of course, such supermassive stars are typically formed in dense clusters, or which R136a is a perfect (and somewhat extreme) example.

There has been speculation that there is 200 M black hole in the Orion Nebula, which would have formed through the mergers of massive stars.
Super star cluster in NGC 6946.
Photo: Adam Block. Inset: Gemini Telescope.
One of the most impressive young clusters I know of myself is the biggest cluster in NGC 6946. I used to be able to find a really fine picture of it, but now it's gone. This picture is nowhere near as good, but you can see the brilliance of the cluster heart. There should be some massive stars in there, and some amazing merger products!

Ann
I think this is Hodge's Complex?

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Re: APOD: Young Suns of NGC 7129 (2016 Aug 29)

Post by Ann » Thu Sep 01, 2016 1:47 pm

starsurfer wrote:
Ann wrote:
Super star cluster in NGC 6946.
Photo: Adam Block. Inset: Gemini Telescope.
One of the most impressive young clusters I know of myself is the biggest cluster in NGC 6946. I used to be able to find a really fine picture of it, but now it's gone. This picture is nowhere near as good, but you can see the brilliance of the cluster heart. There should be some massive stars in there, and some amazing merger products!

Ann
I think this is Hodge's Complex?
Maybe, but I'm not sure. When I googled "Hodge's Complex cluster", I didn't find anything related to NGC 6946 at all. But when I wrote "Hodge's Complex cluster NGC 6946", I found it.

I also found the picture of this cluster that I have been looking for, but unfortunately I can't post it here. The best I can do is show you a small version of it on this page.

Ann
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