3D NLTE analysis of the most iron-deficient star, SMSS0313-6708

Free Access

Table 2

Model atoms for NLTE calculations.

Species	N_levels^a	N_lines^a	N_{b - f}^b	N_ν^c	Source

Li i, ii	20, 1	91	20	1400	1, 2
Na i, ii	20, 1	91	20	1400	2, 3
Mg i, ii, iii	43, 2, 1	70, 1	8	1600	*
Al i, ii	42, 2	90	4	2100	4, *
Ca ii, iii	5, 1	5	0	550	2, *
Fe i, ii, iii	421, 12, 1	776, 12	33	12000	5, *

Notes. The ground states of Mg iii, Ca iii and Fe iii are not significantly populated, but are included for technical reasons.

^(a)

The number of levels or lines in each listed ionization stage.

^(b)

Number of radiative bound-free continuous transitions from the neutral to the singly ionized state. We do not consider bound-free transitions from the ionized states.

^(c)

Approximate number of frequency points used to compute the radiation field when solving the statistical equilibrium.

Reference. (*) This work; (1) Lind et al. (2009a); (2) Lind et al. (2013); (3) Lind et al. (2011); (4) Nordlander et al. (in prep.); (5) Lind et al. (in prep.), Amarsi et al. (2016b).

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.