Talk:Planetary nebula
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| Missing image Cscr-featured.png Featured article star | Planetary nebula is a featured article, which means it has been identified as one of the best articles produced by the Wikipedia community. If you see a way this page can be updated or improved without compromising previous work, feel free to contribute. |
I worked on the project that produced this image (one of the et al. in Chu et al.) and the image processing was done at NASA. I believe, therefore, it's in the public domain and I have the right to give permission for its GDL release. Please contact me if there's a problem with either assumption! -- April
- If the work is in the public domain, I have just as much right as you do to release it under a licence, ie none. Sorry. Taxpayers paid for Hubble, therefore we own any images coming out of it. -AC
I have a PhD in the abundances of heavy elements in planetary nebulae, so couldn't resist writing a bit on this page. Apologies to all if I've got too technical! Please edit ruthlessly if I have. (Worldtraveller)
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"In other galaxies, planetary nebulae may be the only objects observable enough to yield useful abundance information." Apologies for removing the "abundance" part, I misunderstood it and thought of it as either bad grammar or a forgotten piece of an older sentence. -F. Delpierre
- No probs - it made me realise that section could be a bit clearer so I've tweaked it a bit more. Hope that makes it clearer. Worldtraveller 01:35, 31 Dec 2004 (UTC)
Images from this article are in wikimedia commons now. --213.194.213.59 04:10, 1 Jan 2005 (UTC)
Plasma/Gas
I just changed 'plasma' to 'gas' in the intro., because although the majority of a planetary nebula will be plasma, there are often neutral species present so the more general description is better, I think. Worldtraveller 23:49, 2 Jan 2005 (UTC)
Slashdot News
This story (http://www.news-about-space.org/story/2556.html) was linked by Slashdot (http://www.slashdot.org) on Jan 5 2005. Coincidentally, the slashdot heading linked to this article as a reference on planetary nebula(e for plural?). Anyway, apparently the article contains some new findings apropos to the mystery of magnetic fields and why the nebulae aren't usually round. Unfortunately it's 3 in the morning here (too late to write articles by my clock) and I know nothing about the subject. I thought you all should know though.Matthewcieplak 21:20, 6 Jan 2005 (UTC)
- This news had been added to the intro, with a statement that 'it is likely that magnetic fields are responsible' for diverse shapes of planetary nebulae. I thought that sounded a bit strong - this is just one paper, with 2/5 definite detections of magnetic fields and 2/5 probable detections. It's still just one of many competing theories, so I've removed the sentence from the intro and added a bit to the 'open questions' section. Worldtraveller 20:22, 23 Jan 2005 (UTC)