View source for Talk:Stingray Nebula

{{ArticleHistory
|action1=GAN
|action1date=02:50, 30 January 2011
|action1link=Talk:Stingray Nebula/GA1
|action1result=not listed
|action1oldid=409261577
|dykdate=22 January 2007
|dykentry=...that the '''[[Stingray Nebula]]''', discovered in 1987, is the youngest known [[planetary nebula]]?
|currentstatus=FGAN
|topic=Physics and astronomy
}}
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{{WikiProject Astronomy|object=yes|importance=mid}}
}}

== The Crocodile Hunter ==

Are there plans to christen a nearby nebula after Steve Irwin?


== Please explain: ==
* (Hen-1357) -- what classification system is this?
This means the 1357th object in Karl Henize's 3rd catalog.  It's also known as He3-1357.  --DrMattB
* as large as 130 solar systems - OUR solar system, or any?
Our solar system.  --DrMattB
* as big as a dime - please do not use examples that only North American readers can understand.
-- [[User:Tarquin|Tarquin]] 13:13, 30 Jan 2004 (UTC)

Hen-1357 refers to the 1357th object in Karl Henize's 3rd list of stars showing emission-line features.
"130 solar systems" is a comparison to OUR solar system. 
Good idea not to use the "dime" comparison. 
[[User:DrMattB|DrMattB]] ([[User talk:DrMattB|talk]]) 16:10, 31 July 2009 (UTC)

== 18,000 years ago ==

Shouldn't we point out that all this took place 18,000 years ago - it's just now that the light reached us ? -- [[User:Beardo|Beardo]] 02:58, 22 January 2007 (UTC)
:The whole point of this article seems to be the claim that it didn't happen 18,000 years ago, but rather in 1987.  This is explicitly what the DYK "hook" says.  Is that simply incorrect?  -[[User:Dmz5|<span style="color:red;"><b>Dmz5</b></span>]]<small>[[Special:Contributions/Dmz5|*Edits*]][[User talk:Dmz5|*Talk*]]</small> 03:05, 22 January 2007 (UTC)
::Logic and science dictate that it could not have happened in the last century. [[User:Xiner|Xiner]] ([[User talk:Xiner|talk]], [[Special:Emailuser/Xiner|email]]) 03:19, 22 January 2007 (UTC)
:::I know, you are right.  So, what's the deal then?-[[User:Dmz5|<span style="color:red;"><b>Dmz5</b></span>]]<small>[[Special:Contributions/Dmz5|*Edits*]][[User talk:Dmz5|*Talk*]]</small> 03:23, 22 January 2007 (UTC)

:::: The point is that we can observe it for scientific examination at a very young age.  From the perspective of earth, it is the youngest known observable PN.  [[User:WilliamKF|WilliamKF]] 01:32, 24 January 2007 (UTC)

== Latest Info ==

I'm adding a lot more information, based on the papers that have come out since the HST observations.  [[User:DrMattB|DrMattB]] ([[User talk:DrMattB|talk]]) 16:12, 31 July 2009 (UTC)<br />

BTW, the photo you see appeared on the cover of the issue of Nature that contained Bobrowsky's definitive paper on this object.<ref name="Bobrowsky1998">{{Harvnb|Bobrowsky|1998}}</ref>

{{reflist-talk}}

== XKCD ==

This was referred to in http://xkcd.com/847/ . Should this be added to the article? Perhaps a In Popular culture section?
[[User:Azrich|Azrich]] ([[User talk:Azrich|talk]]) 17:55, 14 January 2011 (UTC)

: No.  [http://xkcd.com/446/ Stop doing that.]  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/96.224.70.156|96.224.70.156]] ([[User talk:96.224.70.156|talk]]) 18:41, 14 January 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->

== References ==
<div class="references-small">
* {{citation
 | last1 = Bobrowsky
 | first1 = Matthew
 | title = Narrowband HST Imagery of the Young Planetary Nebula Henize 1357
 | journal = The Astrophysical Journal
 | year = 1994
 | volume = 426
 | issue = 
 | pages = L47-L50
 | url = http://adsabs.harvard.edu/abs/1994ApJ...426L..47B
}}
* {{citation
 | last1 = Bobrowsky
 | first1 = Matthew
 | title = Birth and early evolution of a planetary nebula
 | journal = Nature
 | year = 1998
 | volume = 392
 | issue = 
 | pages = 469-471
 | url = 	http://adsabs.harvard.edu/abs/1998Natur.392..469B
}}
</div>

{{Talk:Stingray Nebula/GA1}}

== The Stingray nebula is fading ==

A recent study has found that in the two last decades, the Stingray nebula has been extinguished (the oxygen emission, dimmed in brightness by a factor of nearly a thousand between 1996 and 2016).

Sources and nice photos (cc) :

*[https://www.iaa.csic.es/en/news/stingray-nebula-youngest-known-fading CSIC article]
*[https://esahubble.org/images/heic2020a/ ESA image with description]
*[https://arxiv.org/abs/2009.01701 Study article at Arxiv] 

[[User:Alexcalamaro|Alexcalamaro]] ([[User talk:Alexcalamaro|talk]]) 21:33, 1 January 2021 (UTC)

:{{re|Alexcalamaro}} Are the usage rights for these images compatible with Wikimedia Commons? The fast dimming is the most interesting thing about this nebula, so we should add these images to the article if we can. —&nbsp;[[User:UnladenSwallow|UnladenSwallow]] ([[User talk:UnladenSwallow|talk]]) 18:12, 13 May 2021 (UTC)

::{{re|UnladenSwallow}} Yes indeed. I have just uploaded the photo to commons as [https://upload.wikimedia.org/wikipedia/commons/f/fc/Fading_Stingray.jpg File:Fading Stingray.jpg]. [[User:Alexcalamaro|Alexcalamaro]] ([[User talk:Alexcalamaro|talk]]) 06:18, 14 May 2021 (UTC)

:::{{re|Alexcalamaro}} Thank you! I have added the image to the article. I have also moved things around and made some edits to make the article more clear. Still not entirely happy with it, especially the cryptic mention of "gas outflow collimation" in the lead—no idea what that means. —&nbsp;[[User:UnladenSwallow|UnladenSwallow]] ([[User talk:UnladenSwallow|talk]]) 18:22, 15 May 2021 (UTC)

::::{{re|UnladenSwallow}} I noticed your tag and tried to un-cryptic that sentence; is it more comprehensible now? (Also, African or European remains unresolved, please clarify.) [[User:Wikignome Wintergreen|<span style="color:#339966">''Wikignome Wintergreen''</span>]]<sup>[[User talk:Wikignome Wintergreen|talk]]</sup> 17:36, 25 May 2021 (UTC)