APOD: Stephan s Quintet (2010 Nov 20)

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APOD: Stephan s Quintet (2010 Nov 20)

Post by APOD Robot » Sat Nov 20, 2010 5:14 am

Image Stephan s Quintet

Explanation: The first identified compact galaxy group, Stephan's Quintet is featured in this eye-catching image constructed with data drawn from the extensive Hubble Legacy Archive. About 300 million light-years away, only four galaxies of the group are actually locked in a cosmic dance of repeated close encounters. The odd man out is easy to spot, though. The four interacting galaxies (NGC 7319, 7318A, 7318B, and 7317) have an overall yellowish cast and tend to have distorted loops and tails, grown under the influence of disruptive gravitational tides. But the larger bluish galaxy, NGC 7320, is much closer than the others. Just 40 million light-years distant, it isn't part of the interacting group. In fact, individual stars in the foreground galaxy can be seen in the sharp Hubble view, hinting that it is much closer than the others. Stephan's Quintet lies within the boundaries of the high flying constellation Pegasus.

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by bystander » Sat Nov 20, 2010 5:20 am

Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by Ann » Sat Nov 20, 2010 5:44 am

Oh wow!!! We got Hunter Wilson's incredibly beautiful processed image of the incredible amount of data that the HST has gathered of this amazing group of interacting galaxies!!! :D :D :D :D :D :D :D :D :D

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by FrogSplash » Sat Nov 20, 2010 6:06 am

Am I miscounting? I only see four galaxies. Where's the fifth one?


FS

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by bystander » Sat Nov 20, 2010 6:43 am

FrogSplash wrote:Am I miscounting? I only see four galaxies. Where's the fifth one?
I think you are miscounting, maybe this will help:

Stephan's Quintet (aka Hickson Compact Group 92) is generally considered to be: NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, and NGC 7320. However, NGC 7320 is a foreground galaxy and not a part of the interacting group. On the other hand, NGC 7320C (upper left) does appear to be a part of the interacting group, making HCG 92 a true quintet.
Know the quiet place within your heart and touch the rainbow of possibility; be
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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by orin stepanek » Sat Nov 20, 2010 2:00 pm

It is neat; and it would be neat to see the finished product! 8-) :D
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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by owlice » Sat Nov 20, 2010 2:03 pm

The Spitzer image makes the smiley face really stand out!
smiley.jpg
A closed mouth gathers no foot.

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by neufer » Sat Nov 20, 2010 3:14 pm

orin stepanek wrote:
It is neat; and it would be neat to see the finished product! 8-) :D
http://en.wikipedia.org/wiki/Chop_suey wrote: <<Chop suey (Chinese: 杂碎; pinyin: zá suì; literally "assorted pieces") is a Chinese dish consisting of meats (often chicken, fish, beef, shrimp or pork) and eggs, cooked quickly with vegetables such as bean sprouts, cabbage, and celery and bound in a starch-thickened sauce. Chop suey first appears in an American publication in 1888: "A staple dish for the Chinese gourmand is chow chop svey [sic], a mixture of chickens' livers and gizzards, fungi, bamboo buds, pigs' tripe, and bean sprouts stewed with spices." In 1898, it is described as "A Hash of Pork, with Celery, Onions, Bean Sprouts, etc." Chop suey is widely believed to have been invented in America by Chinese immigrants, but in fact comes from Taishan, a district of Guangdong Province which was the home of many of the early Chinese immigrants; the Hong Kong doctor Li Shu-fan reported that he knew it in Taishan in the 1890s.

Despite its Taishan background, there are various colorful stories about its origin, which Davidson (1999) characterizes as "culinary mythology": Some say it was invented by Chinese immigrant cooks working on the United States Transcontinental railway in the 19th century. Outside of Taishan, the name "chop suey" or "shap sui in Cantonese, and "za sui", when used in Mandarin, has the somewhat different meaning of cooked animal offal or entrails. For example, in the classic novel Journey to the West (circa 1590), Sun Wukong tells a lion-monster in chapter 75: "When I passed through Guangzhou (Canton), I bought a pot for cooking za sui - so I'll savour your liver, entrails, and lungs.".>>
Art Neuendorffer

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by orin stepanek » Sat Nov 20, 2010 4:59 pm

Aww! Now you made me hungry! :D :D We do like to eat Chinese food once in a while. :wink:
I do see the relationship with the 5 galaxies mixing it up. 8-)
Orin

Smile today; tomorrow's another day!

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APOD: Stephan s Quintet (2010 Nov 20)

Post by djBusby » Sat Nov 20, 2010 11:39 pm

I featured your current Astronomy Picture of the Day on my blog (ASTRONASTY) today. I linked back to
APOD's page, and I'm hoping that my viewers will be headed over to you and generate some traffic for ya. :)
Much respect!
-DJ Busby
Last edited by djBusby on Tue Aug 30, 2011 4:05 am, edited 2 times in total.
Reason: Removed unauthorized blog link

kambu

Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by kambu » Mon Nov 22, 2010 6:07 pm

Ummm.... Is that a pair of interacting galaxies slightly above NGC 7317 in this pic?

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Re: APOD: Stephan s Quintet (2010 Nov 20)

Post by neufer » Mon Nov 22, 2010 9:59 pm

Art Neuendorffer

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