EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 680 (December 2023) A&A, 680 (2023) A101 Full HTML
Open Access

Table 2.

Definitions of stellar subtypes in populations.

Subtype Definition
MS Xc ≥ 10−5(†)
Post-MS Xc < 10−5
SG Post-MS and log(L [L⊙]) > 4 and Xs > 0.35 (†)
BSG SG and log(Teff [K]) ≥ 3.9
YSG SG and 3.66 < log(Teff [K]) < 3.9
RSG SG and log(Teff[K]) ≤ 3.66
WR log(Teff[K]) > 4 and Xs ≤ 0.35
WNL WR and Xs ≥ 10−5
WNE WR and Xs < 10−5 and Cs ≤ Ns(†)
WNC WR and Xs < 10−5 and 0.1 ≤ Cs/Ns ≤ 10
WC WR and Xs < 10−5 and Cs + Os ≤ Ys(†) (numb. frac.)
WO WR and Xs < 10−5 and Cs + Os > Ys (numb. frac.)

Notes.

(†)

X, Y, C, N, and O refer to the mass fractions (unless ‘numb. frac.’ is specified, in which case they are the number fractions) of 1H, 4He, 12C, 14N, and 16O, respectively. The subscripts c (centre) and s (surface) refer to where in a star these abundances are taken.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.