Talk:Sérsic profile

Requested move 13 December 2021

 * The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion. 

The result of the move request was: moved. (closed by non-admin page mover) Megan B....   It’s all coming to me till the end of time  07:48, 20 December 2021 (UTC)

Sersic profile → Sérsic profile – To include the accent in Sérsic's name (spelling correction) Toadspike (talk) 13:09, 13 December 2021 (UTC)
 * Support. WP uses diacritics in proper names when sources make it clear the marks should be present, even if some sources drop them (e.g. many newspapers do).  — SMcCandlish ☏ ¢ 😼  09:01, 14 December 2021 (UTC)
 * Support per nom.--Ortizesp (talk) 16:53, 14 December 2021 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Applications
In MNRAS-2015-Eales-3489-507.pdf, Eales et al. use the Sérsic Index, n, to categorize galaxies into two groups with n=2.5 as the value dividing the two. They state:"This useful function can be used to fit the structures of all galaxy types."(Confusingly, they adopt the unfortunate terminology coined by Hubble in 1926: ETG and LTG which stand for "early-type" and "late-type" galaxy but where the "early" and "late" are probably exactly opposite the actual chronological development the terms suggest)). Eales et al suggest that using the Sérsic Index is more useful for studying galaxy evolution than the more common elliptic and spiral designations. Using Herschel, GAMA, and Hubble data they conclude that 90% of star formation occuring today is in LTGs, n < 2.5, but that ETGs, n > 2.5, contain half of the total stellar mass of the Universe suggesting that LTGs gradually evolve into ETGs (contrary to the "galaxies in collision" model for elliptic formation). They also conclude that 80%-85% of ALL star formation (from the Big Bang to the present) occurred in LTGs.216.96.76.79 (talk) 15:42, 27 August 2015 (UTC)