Talk:Gliese 581b
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"Characteristics" for a planet which doesn't have any
[edit]Since this planet hasn't got a good flamewar yet, how about I start one :^)
I found a section for "characteristics" which just had the very boring (and redundant) statistic of semi-major axis.
It got me thinking about Gliese 876 d and mu Arae d. A lot of the papers published about them deal with the planetary models, and are only slightly less speculative than a good episode of DS9. People seem to be laying off Gliese 436 b, but if that one didn't transit it would be treated as a clone of GJs 876 d; imaginations would be running wild.
Even GJ 436 b hasn't had its composition hammered down in the way of a HD 209458 b; it was touted as Waterworld / HotIceWorld and then it quietly came about that it was too bloated, and was wrapped in gas.
So, to Characteristics, rather than copy-paste the speculations I'd found (and expanded) in GJ 876 d and mu Arae d, I've added an apologia as to why there aren't characteristics, incorporating a signpost over to GJ 436 b. --Zimriel (talk) 04:51, 19 August 2008 (UTC)
- "Also, if Gliese 581 b orbits at a low enough inclination, it may approach the size of HD 149026 b (114.4 Earth masses) and share some of that planet's properties." DELETED - making an analogy to the anomalous-core planet HD 149026b is getting extremely speculative, particularly because of very different metallicity of the two host stars --User:86.171.72.213 09:26, 23 August 2008 (CST)
- This is all true; but my point was that until the inclination is better constrained, this high a mass cannot be ruled out. Either way this planet couldn't survive at this temperature and proximity without a core. Whether it's a small core like Saturn or a disproportionate one like HD 149026 b, we can't tell, but it must be somewhere between them (and I'd bet on the latter). --Zimriel (talk) 20:45, 23 August 2008 (UTC)
HARPS?
[edit]It says this planet was discovered by HARPS, however, I believe only Gliese 581 c & d were discovered by HARPS and the "wobble" of the star. Gliese 581 b was discovered by passing in front of the star (transit). Can anyone confirm this? —Preceding unsigned comment added by 192.12.88.5 (talk) 06:12, 16 April 2009 (UTC)
- According to the main article, Gliese 581 b was detected by HARPS but not by transit method. BlueEarth (talk | contribs) 22:14, 16 April 2009 (UTC)
Artist's conception image should be removed
[edit]The artist's conception image should be removed or at least taken out of the planet's infobox and placed as "decoration" in the text of the article. There's nothing encyclopedic (and a lot that's misleading or just fanciful) about this (and most "impression") images. — Aldaron • T/C 23:04, 6 October 2010 (UTC)
Assessment comment
[edit]The comment(s) below were originally left at Talk:Gliese 581b/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
There is a "b", a "c" and a "d" but is there an "a"?
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Last edited at 12:22, 21 August 2007 (UTC). Substituted at 16:24, 29 April 2016 (UTC)
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