Talk:Stingray Nebula

Stingray Nebula was a Natural sciences good articles nominee, but did not meet the good article criteria at the time. There may be suggestions below for improving the article. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.

Article milestones
Date	Process	Result
January 30, 2011	Good article nominee	Not listed

A fact from this article appeared on Wikipedia's Main Page in the "Did you know?" column on January 22, 2007.

The text of the entry was: Did you know ...that the Stingray Nebula, discovered in 1987, is the youngest known planetary nebula?

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.

-- 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. DrMattB (talk) 16:10, 31 July 2009 (UTC)[reply]

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 ? -- Beardo 02:58, 22 January 2007 (UTC)[reply]

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? -Dmz5*Edits**Talk* 03:05, 22 January 2007 (UTC)[reply]

Logic and science dictate that it could not have happened in the last century. Xiner (talk, email) 03:19, 22 January 2007 (UTC)[reply]

I know, you are right. So, what's the deal then?-Dmz5*Edits**Talk* 03:23, 22 January 2007 (UTC)[reply]

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. WilliamKF 01:32, 24 January 2007 (UTC)[reply]

Latest Info

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

BTW, the photo you see appeared on the cover of the issue of Nature that contained Bobrowsky's definitive paper on this object.^[1]

References

^ Bobrowsky 1998

XKCD

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

No. Stop doing that. —Preceding unsigned comment added by 96.224.70.156 (talk) 18:41, 14 January 2011 (UTC)[reply]

References

Bobrowsky, Matthew (1994), "Narrowband HST Imagery of the Young Planetary Nebula Henize 1357", The Astrophysical Journal, 426: L47 – L50
Bobrowsky, Matthew (1998), "Birth and early evolution of a planetary nebula", Nature, 392: 469–471

GA Review

This review is transcluded from Talk:Stingray Nebula/GA1. The edit link for this section can be used to add comments to the review.

Reviewer: Lord Roem (talk) 22:20, 23 January 2011 (UTC)[reply]

Section-by-section review

Lead

Take out "Browbowski 94" in parenthetical cite here. Change it to a ref with the <ref></ref> tags.
Change "The Stingray" to "The nebula"
Make " and it is located 18k light years away" into a separate sentence.
You make reference to "Bowbowski, et al." Say who the "et al. is". For example: "Browbowski and other researchers at the University of X ..."
Wikilink "magnitude" as it has a certain meaning in in Astronomy contexts
Make the "--" dash into an —

History

Explain what an 'emission line star' is.
Put the full name of the acronym organization
Remove the parenthetical cite. The ref link to the source is fine.
Move the cite from "Browbowski" to the end of "observed it"
Explain why it is called the Stingray Nebula and put a cite for him/her using the Hubble to find it. It may be the same source saying he/she found it.
Confused here. It says it was observed as a PPNe - how does it make Bobrowski the 'finder'?

PNN

Need a cite for the first sentence's claim
Same for the second sentence.
Again, using the ref tags are fine instead of the parenthetical usage here.
Put info on what a PNN is.
Put info on why it is significant, as this was seemingly mentioned in the lead.

Notes

Fix the notes so that the 'a' subpoint is the sole thing in the 'notes' section while the other cites can go under a "References" heading.

Concluding Thoughts

This article is very short and thus may not meet the GA mandate that an article be broad it its scope of the topic. I suggest putting more information in to expand the article.
This will be placed "on hold", allowing a week's time to fix the article before I make an assessment for GA. If you have any questions, feel free to post it on my talk page. Best regards, Lord Roem (talk) 22:35, 23 January 2011 (UTC)[reply]

Other misc. issues

Lead doesn't need cite
Lead should be a summary of the information. Some of the content is not referenced in the lead and visa versa.

- Lord Roem (talk) 22:42, 23 January 2011 (UTC)[reply]

Conclusion

No attempt to resolve concerns --> GA nominations will be failed. Lord Roem (talk) 02:50, 30 January 2011 (UTC)[reply]

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) :

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

@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. — UnladenSwallow (talk) 18:12, 13 May 2021 (UTC)[reply]

@UnladenSwallow: Yes indeed. I have just uploaded the photo to commons as File:Fading Stingray.jpg. Alexcalamaro (talk) 06:18, 14 May 2021 (UTC)[reply]

@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. — UnladenSwallow (talk) 18:22, 15 May 2021 (UTC)[reply]

@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.) Wikignome Wintergreen^talk 17:36, 25 May 2021 (UTC)[reply]

[Bobrowsky1998-1] Bobrowsky 1998

[1]