|Grus (constellation) has been listed as a Natural sciences good article under the good article criteria. If you can improve it further, please do, and if it no longer meets these criteria, it can be reassessed.
Review: February 21, 2014.
|WikiProject Astronomy / Constellations||(Rated GA-class, Mid-importance)|
Ancient Egyptian influence
I still think the wording "The inspiration for this constellation was drawn from Ancient Egypt, where the crane symbolized a stargazer because of its high flight" is tosh. What is the source? The references given all seem to repeat each other. Given that they credit Bayer as the originator rather than Keyser and de Houtman suggests that the scholarship leaves something to be desired. Keyser and de Houtman based their constellations on exotic animals they had seen on their travels. I may do them a disservice, but I doubt they knew anything about ancient Egypt. Skeptic2 (talk) 23:18, 31 July 2008 (UTC)
- Agreed (five years late...) Cas Liber (talk · contribs) 08:56, 19 November 2013 (UTC)
- Thank you. Incidentally, I note that some editors are placing rather too much trust in the works of sources such as R.H. Allen and J. Staal, who are not always reliable. This needs watching.Skeptic2 (talk) 11:23, 19 November 2013 (UTC)
Sources to check and add
CE Gruis AKA Grus V1
- This review is transcluded from Talk:Grus (constellation)/GA1. The edit link for this section can be used to add comments to the review.
Items for copyedit
- An alternative name for the constellation, Phoenicopterus (Latin "flamingo"), was used briefly during the early 17th century, seen in the 1605 work Cosmographiae Generalis by Paul Merula of Leiden University and a c, 1625 globe by Dutch globe maker Pieter van den Keere.
- As both of these people worked with Plancius, astronomer Ian Ridpath has reported the symbolism likely came from him originally.
- In Central Australia, the Arrernte and Luritja people living in on a mission in Hermannsburg viewed the sky as divided between them, east of the Milky Way representing Arrernte camps and west denoting Luritja camps.
- Grus is located too far south and hence remains below the horizon for observers in the British Isles and northern United States, though can be easily seen from Florida or California.
- Also known as Al Dhanab, it has finished fusing its core hydrogen and begun cooling and expanding,
- The system is poorly known, though the donor star has been calculated to be of spectral type F5V.
- RZ Gruis is a nova-like binary system of apparent magnitude 12.3
- The system is poorly known,
- CE Gruis (also known as Grus V-1) is a faint (magnitude 18–21) star system also composed of a white dwarf and donor star, in this case the two are so close and fused into orbit facing one another.
- Gliese 832 is a red dwarf of spectral type M1.5V and apparent magnitude 8.66 located only 16.1 light-years distant, hence one of the nearest stars to the Solar System.
- A Jupiter-like planet with an orbital period of 9.4±0.4 years was discovered in 2008.
- Around 3000 light-years distant, it is expanding at a rate of 50 kilometres a second, one of the fastest of all planetary nebulae.
- One of the fastest rates of expansion?
- (Question only. No action necessarily needed.) Does the article as a whole follow British or U.S. spelling? Does a template need to be placed on the Talk page?
- NGC 7552 and 7582 are exhibiting high starburst activity, thought to have arisen because of the tidal forces from interacting.
- It has a fast counterrotating stellar core, and stellar shells and ripples in its outer region.
- SN 2001ig, one of the two supernovas within NGC7424, was discovered in 2001 and classified as a Type IIb supernova, one that initially shows a weak hydrogen line in its spectrum, but whose H emission later becomes undetectable and is replaced by lines of oxygen, magnesium and calcium, as well as other features that resemble the spectrum of a Type Ib supernova.
- Appearing undisturbed in visible light, it shows signs of having undergone a collision or merger viewed at longer wavelengths,
Items for fact-check
- Covering 366 square degrees, it ranks 45th of the 88 modern constellations in size and covers 0.916% of the night sky.
- I checked 88 modern constellations by area on a spreadsheet. The numbers in the table are internally consistent, with Grus 0.886% of the total solid angle which sums to very close to 4π (5 significant figures). Whether the numbers in this table are right is a different matter, of course. Stigmatella aurantiaca (talk) 11:29, 20 February 2014 (UTC)
- The 15-20 references that I spot-checked looked appropriately cited. Ridpath is sufficiently notable that use of his self-published web site should be acceptable. Stigmatella aurantiaca (talk) 21:26, 20 February 2014 (UTC)