Free Access

Table 1

Atmospheric parameters and elemental abundances relative to solar obtained for HD 42618 and HD 43587 using the various line lists.

HD 42618
Reddy et al. (2003) Chen et al. (2000) Feltzing & Gonzalez (2001) Bensby et al. (2003) Mean

Teff [K] 5745 ± 25 5765 ± 19 5765 ± 27 5775 ± 21 5765 ± 17
log g [cgs] 4.43 ± 0.07 4.49 ± 0.06 4.50 ± 0.06 4.50 ± 0.05 4.48 ± 0.04
ξ [km s-1] 1.15 ± 0.06 0.86 ± 0.06 1.17 ± 0.06 0.70 ± 0.05 0.95 ± 0.04

[Fe i/H] –0.11 ± 0.04 (45) –0.09 ± 0.03 (82) –0.09 ± 0.04 (50) –0.11 ± 0.03 (120) –0.10 ± 0.02
[Fe ii/H] –0.11 ± 0.04 (7) –0.09 ± 0.04 (7) –0.09 ± 0.04 (6) –0.11 ± 0.04 (25) –0.10 ± 0.03
[Li i/H] +0.21 ± 0.07 (1) +0.23 ± 0.07 (1) +0.23 ± 0.07 (1) +0.24 ± 0.07 (1) +0.23 ± 0.06a
[C i/Fe] +0.01 ± 0.03 (2) ... ... ... +0.01 ± 0.03
[Na i/Fe] –0.01 ± 0.02 (2) –0.02 ± 0.02 (2) –0.03 (1) +0.00 ± 0.03 (4) –0.01 ± 0.02
[Mg i/Fe] –0.01 (1) +0.04 (1) ... +0.06 ± 0.03 (2) +0.05 ± 0.02
[Al i/Fe] +0.00 (1) –0.01 (1) –0.01 (1) +0.01 ± 0.02 (2) +0.00 ± 0.02
[Si i/Fe] +0.01 ± 0.03 (6) +0.01 ± 0.03 (10) +0.00 ± 0.03 (8) +0.02 ± 0.03 (16) +0.01 ± 0.02
[Si ii/Fe] –0.02 (1) ... ... ... –0.02 ± 0.05b
[S i/Fe] +0.00 (1) ... ... ... +0.00 ± 0.05b
[Ca i/Fe] +0.01 ± 0.03 (5) +0.01 ± 0.03 (14) +0.00 ± 0.04 (7) +0.03 ± 0.04 (19) +0.01 ± 0.02
[Sc ii/Fe] +0.00 ± 0.02 (2) ... +0.00 ± 0.02 (2) ... +0.00 ± 0.02
[Ti i/Fe] +0.01 ± 0.03 (7) +0.02 ± 0.02 (5) –0.01 ± 0.05 (7) +0.02 ± 0.03 (28) +0.02 ± 0.02
[Ti ii/Fe] ... ... ... +0.04 ± 0.03 (11) +0.04 ± 0.03
[V i/Fe] –0.01 ± 0.03 (6) –0.01 ± 0.02 (3) +0.00 ± 0.04 (8) ... –0.01 ± 0.02
[Cr i/Fe] +0.02 ± 0.03 (4) +0.00 ± 0.02 (2) +0.00 ± 0.02 (5) +0.01 ± 0.04 (12) +0.00 ± 0.02
[Cr ii/Fe] ... ... +0.03 (1) +0.01 ± 0.03 (4) +0.01 ± 0.02
[Co i/Fe] +0.01 ± 0.04 (3) ... –0.01 ± 0.07 (4) ... +0.00 ± 0.03
[Ni i/Fe] –0.02 ± 0.03 (15) –0.02 ± 0.02 (16) –0.02 ± 0.02 (21) –0.01 ± 0.03 (45) –0.02 ± 0.02
[Zn i/Fe] +0.03 ± 0.03 (2) ... ... +0.02 ± 0.03 (2) +0.03 ± 0.02
[Sr i/Fe] +0.00 (1) ... ... ... +0.00 ± 0.05b
[Y ii/Fe] +0.00 ± 0.03 (4) ... ... ... +0.00 ± 0.03
[Zr ii/Fe] –0.04 (1) ... ... ... –0.04 ± 0.05b
[Ba ii/Fe] –0.05 ± 0.06 (2) +0.00 ± 0.08 (3) ... ... –0.03 ± 0.05
[Ce ii/Fe] +0.03 ± 0.02 (3) ... ... ... +0.03 ± 0.02
[Nd ii/Fe] +0.03 (1) ... ... ... +0.03 ± 0.05b
[Eu ii/Fe] +0.07 (1) ... ... ... +0.07 ± 0.05b

HD 43587
Reddy et al. (2003) Chen et al. (2000) Feltzing & Gonzalez (2001) Bensby et al. (2003) Mean

Teff [K] 5920 ± 22 5965 ± 21 5940 ± 27 5965 ± 26 5947 ± 17
log g [cgs] 4.29 ± 0.07 4.42 ± 0.06 4.39 ± 0.06 4.38 ± 0.06 4.37 ± 0.04
ξ [km s-1] 1.29 ± 0.05 1.06 ± 0.06 1.42 ± 0.06 1.00 ± 0.04 1.16 ± 0.04

[Fe i/H] –0.02 ± 0.03 (44) –0.01 ± 0.04 (77) –0.02 ± 0.03 (45) –0.02 ± 0.04 (118) –0.02 ± 0.02
[Fe ii/H] –0.02 ± 0.04 (6) –0.01 ± 0.05 (5) –0.02 ± 0.04 (5) –0.02 ± 0.05 (23) –0.02 ± 0.03
[Li i/H] +1.11 ± 0.06 (1) +1.15 ± 0.06 (1) +1.13 ± 0.06 (1) +1.14 ± 0.06 (1) +1.13 ± 0.05a
[C i/Fe] +0.00 ± 0.03 (3) ... +0.04 (1) ... +0.01 ± 0.03
[Na i/Fe] +0.00 ± 0.02 (2) –0.01 ± 0.02 (2) –0.01 (1) +0.02 ± 0.04 (4) +0.00 ± 0.02
[Mg i/Fe] +0.03 ± 0.06 (2) +0.05 (1) ... +0.06 ± 0.02 (2) +0.06 ± 0.02
[Al i/Fe] –0.01 (1) –0.01 (1) –0.01 (1) +0.00 ± 0.02 (2) +0.00 ± 0.02
[Si i/Fe] +0.00 ± 0.02 (6) +0.01 ± 0.03 (10) +0.00 ± 0.03 (8) +0.02 ± 0.03 (15) +0.01 ± 0.02
[Si ii/Fe] +0.04 (1) ... ... ... +0.04 ± 0.05b
[Ca i/Fe] –0.01 ± 0.02 (5) +0.02 ± 0.05 (15) +0.00 ± 0.04 (9) +0.04 ± 0.04 (19) +0.00 ± 0.02
[Sc ii/Fe] –0.02 ± 0.03 (2) ... +0.01 ± 0.03 (2) ... +0.00 ± 0.02
[Ti i/Fe] –0.01 ± 0.03 (7) +0.00 ± 0.04 (5) –0.03 ± 0.05 (8) +0.00 ± 0.04 (27) –0.01 ± 0.02
[Ti ii/Fe] ... ... ... +0.02 ± 0.04 (12) +0.02 ± 0.04
[V i/Fe] –0.01 ± 0.04 (6) +0.00 ± 0.06 (3) +0.00 ± 0.04 (8) ... +0.00 ± 0.03
[Cr i/Fe] +0.00 ± 0.03 (4) +0.00 ± 0.04 (2) +0.00 ± 0.03 (5) +0.02 ± 0.03 (12) +0.01 ± 0.02
[Cr ii/Fe] ... ... +0.01 (1) +0.00 ± 0.02 (4) +0.00 ± 0.02
[Co i/Fe] +0.00 ± 0.04 (3) ... –0.04 ± 0.05 (6) ... –0.01 ± 0.03
[Ni i/Fe] +0.00 ± 0.03 (15) +0.00 ± 0.03 (14) –0.01 ± 0.03 (22) +0.00 ± 0.03 (41) +0.00 ± 0.02
[Zn i/Fe] +0.00 ± 0.02 (2) ... ... –0.01 ± 0.03 (2) +0.00 ± 0.02
[Sr i/Fe] –0.02 (1) ... ... ... –0.02 ± 0.05b
[Y ii/Fe] –0.04 ± 0.03 (4) ... ... ... –0.04 ± 0.03
[Zr ii/Fe] –0.05 (1) ... ... ... –0.05 ± 0.05b
[Ba ii/Fe] –0.09 ± 0.04 (3) –0.07 ± 0.03 (3) ... ... –0.08 ± 0.03
[Ce ii/Fe] –0.04 ± 0.03 (2) ... ... ... –0.04 ± 0.03
[Nd ii/Fe] –0.02 (1) ... ... ... –0.02 ± 0.05b
[Eu ii/Fe] –0.11 (1) ... ... ... –0.11 ± 0.05b

Notes.Given are the solar-normalised abundance ratios with respect to Fe (relative to hydrogen for iron and lithium). We use the usual notation: [A/B] = [log ϵ(A)− log ϵ(B)] − [log ϵ(A)− log ϵ(B)]  where log ϵ(A) = 12 + AH)] ( is the number density of the species). Our final values for the CoRoT targets are provided in the last column. The number in brackets gives the number of lines used for a given ion.

(a)

The absolute lithium abundances we obtain are log ϵ(Li) = +1.15 for HD 42618 and +2.05 for HD 43587.

(b)

Fixed error value.

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.