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APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 5:07 am
by APOD Robot
The Pelican Nebula in Gas, Dust, and Stars
Explanation: The Pelican Nebula is slowly being transformed. IC 5070, the official designation, is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust. The
Pelican, however, receives much study because it is a particularly active mix of
star formation and evolving gas clouds. The
featured picture was produced in three specific colors -- light emitted by
sulfur,
hydrogen, and
oxygen -- that can help us to better understand these interactions. The light from young energetic stars is slowly transforming the cold gas to hot gas, with the
advancing boundary between the two, known as an
ionization front, visible in bright orange on the right. Particularly dense
tentacles of cold gas remain. Millions of years from now this nebula might no longer be known as the
Pelican, as the
balance and placement of stars and gas will surely leave something that appears completely different.
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Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 11:30 am
by Indigo_Sunrise
Confession: I've never been able to see a pelican in this nebula.
(Is there an 'outlined image' somewhere that someone could point me to? TIA!)
And this is a gorgeous image!
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 12:22 pm
by geckzilla
Indigo_Sunrise wrote:Confession: I've never been able to see a pelican in this nebula.
(Is there an 'outlined image' somewhere that someone could point me to? TIA!)
And this is a gorgeous image!
The way I understand it is like this.
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 12:47 pm
by Ann
geckzilla wrote:Indigo_Sunrise wrote:Confession: I've never been able to see a pelican in this nebula.
(Is there an 'outlined image' somewhere that someone could point me to? TIA!)
And this is a gorgeous image!
The way I understand it is like this.
No. The Pelican is much larger. You can actually see its outline in the photo where you drew your own, smaller pelican. The real Pelican, as seen in your photo, includes almost all the blue areas.
You can see another version of the Pelican, looking more pelican-like, at left.
Ann
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 1:04 pm
by geckzilla
I still only see the pelican in the same spot where I drew it in your image, Ann.
- pelican_outline2.jpg (26.14 KiB) Viewed 2840 times
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 2:50 pm
by Chris Peterson
geckzilla wrote:I still only see the pelican in the same spot where I drew it in your image, Ann.
I've always seen it where I think Ann is seeing it, too. Much bigger, as she says.
- peli2.jpg (26.24 KiB) Viewed 2809 times
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 2:57 pm
by geckzilla
That's clearly a pterodactyl.
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 3:06 pm
by Chris Peterson
geckzilla wrote:That's clearly a pterodactyl.
This is close:
- brown_pelican390small.jpg (8.99 KiB) Viewed 2797 times
But I could live with the "Pterodactyl Nebula".
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 5:00 pm
by neufer
.
KING LEAR: Is it the fashion, that discarded fathers
- Should have thus little mercy on their flesh?
Judicious punishment! 'twas this flesh begot
Those pelican daughters.
https://en.wikipedia.org/wiki/Pelican wrote:
<<In medieval Europe, the pelican was thought to be particularly attentive to her young, to the point of providing her own blood by wounding her own breast when no other food was available. Elizabeth I of England adopted the symbol, portraying herself as the "mother of the Church of England". Nicholas Hilliard painted the Pelican Portrait in around 1573, now owned by the Walker Art Gallery in Liverpool. A pelican feeding her young is depicted in an oval panel at the bottom of the title page of the first (1611) edition of the King James Bible. The self-sacrificial aspect of the pelican was reinforced by the widely read medieval bestiaries. The device of "a pelican in her piety" or "a pelican vulning (from Latin vulno, "to wound") herself" was used in heraldry. An older version of the myth is that the pelican used to kill its young then resurrect them with its blood.
The legends of self-wounding and the provision of blood may have arisen because of the impression a pelican sometimes gives that it is stabbing itself with its bill. In reality, it often presses this onto its chest in order to fully empty the pouch. Another possible derivation is the tendency of the bird to rest with its bill on its breast.>>
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 5:03 pm
by Indigo_Sunrise
These 'traced-over' images are great! At least now I can see the resemblance. Or resemblance
s..?
And 'Pterodactyl Nebula' sounds good to me!
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 6:29 pm
by starsurfer
The dark nebula that separates the Pelican Nebula from the North America Nebula is the
well studied LDN 935. A rare image by Antonio Sánchez can be seen
here.
Re: APOD: The Pelican Nebula in Gas, Dust, and... (2015 Nov 17)
Posted: Tue Nov 17, 2015 9:55 pm
by Boomer12k
Gorgeous!!!
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