Talk:Tau Ceti
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[edit] Luminosity
I believe the figure given for the luminosity of Tau Ceti (0.62 Solar Luminosities) is incorrect, based on other information that is given in Wikipedia and elsewhere on the Web.
The absolute visual magnitude of Tau Ceti is given as 5.68, and the sun's absolute visual magnitude is 4.77. The difference is 0.91, which means the Sun is almost a full magnitude brighter than Tau Ceti, or about 2.312 times (five standard magnitudes = 100 times brighter, one magnitude = 100^0.2, or about 2.512). The figure for luminosity can be calculated when you do the following calculation:
1 / 100^(0.2*0.91) = 1 / 100^0.182 = 0.432.
I have not yet corrected the luminosity figure in the entry because I wish to check my calculations and confirm the results from other sources on the Web and reference books. --B.d.mills 02:34, 19 Oct 2004 (UTC)
UPDATE: I have checked the calculations and they are correct. I have updated the absolute magnitude of Tau Ceti to 0.43.--B.d.mills 23:54, 19 Oct 2004 (UTC)
[edit] In fiction - Complaints Department of Sirius Cybernetics Corporation
The Hitchhiker's Guide to the Galaxy mentions the Complaints Department of Sirius Cybernetics Corporation to be in Sirius Tau in some versions, and in Sirius Tau Ceti in some other versions. Would that be the same Tau Ceti that this article is about? --(boxed) 00:19, 4 December 2005 (UTC)
Very likely. It would mean that the Sirius Corporation has settled, or artificially created, a planet in orbit around Tau Ceti and named it after itself. One more world for the already crowded Tau Ceti System. I hope somebody creates a "Rainbow Tau Ceti" in which all of these worlds, over a dozen of them, are real - similar to Larry Niven's Rainbow Mars, in which the various Martian races and cultures created by great Science Fiction writers - Bradbury, Burroughs, Lewis, Wells, etc. - are all real and competing with each other. Das Baz 16:38, 12 August 2006 (UTC)
[edit] Expansion
The introduction paragraph describes the metallicity of the star and rest of the article is about the debris disk. This star deserves much more.--JyriL talk 16:57, 12 August 2006 (UTC)
[edit] Artificial Worlds
The asteroidal and cometary material can be used to create artificial planets and habitats for human settlement. Das Baz 18:10, 2 September 2006 (UTC)
[edit] Durre Menthor
The following text was removed from the main article because I could not find a valid reference to confirm this assertion:
- However, Tau Ceti once had the now obsolete name of Durre Menthor, derived from the Arabic درر منثور Al Durr' al-Manthur , meaning "Scattered Pearls".
It was inserted into the article by an anonymous user with no talk page. I'm adding it here in the hopes that a reference can be found in the future. Thanks. — RJH (talk) 19:54, 16 November 2006 (UTC)
[edit] References
- Philip G. Judge, Steven H. Saar, Mats Carlsson, and Thomas R. Ayres (2004). "A Comparison of the Outer Atmosphere of the "Flat Activity" Star τ Ceti (G8 V) with the Sun (G2 V) and α Centauri A (G2 V)". The Astrophysical Journal 609 (1): 392-406.
Thanks. I inserted it into the section where the possibility of a Maunder minimum is discussed as an additional reference. — RJH (talk) 22:58, 29 November 2006 (UTC)
[edit] Good Article
This article appears to meet all of the criteria for a Good Article. The prose could be cleaned up further, and a more photographic image would be a nice addition, but the article is pretty extensive and well-referenced. (Additional references in the "Observations" section would also not be amiss, unless that entire section is drawn from the single source cited.) Congratulations, and thanks for your hard work. Shimeru 22:46, 11 December 2006 (UTC)
- Thank you. I've added in some more references to the Observations section. Unfortunately I'm not sure where I can get a good photograph at present. At best it would be a bright splotch on a dark background. (Maybe some day when there's better telescopes...) Hopefully some kind visitors will work on polishing the prose a little more; it's sometimes difficult to find such issues with one's own contributions. — RJH (talk) 22:52, 11 December 2006 (UTC)
- (Me too vote). I think this looks good too. Good work! --Ling.Nut 22:55, 11 December 2006 (UTC)
- I know that all too well. I realize the technical limitations on actual photographs, too, but I still think it would add something to the article. Maybe it's just me. It's not exactly a major issue, in any case. Shimeru 23:48, 11 December 2006 (UTC)
