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Table B.1.

Capella line list.

Name Transition Wavelength (a) Quality of the fit (b)
 Note
(Å) SPEX-ADAS (c) SPEX-FAC (c) APEC
N VII Lyα1 1s (2S1/2)−2p (2P3/2) 24.78 A A A
N VII Lyα2 1s (2S1/2)−2p (2P1/2) 24.78 A A A
Ca XIV 2p3 (4S3/2)−2p23d (4P5/2) 24.11 D D D SPEX v2 calculation
Ar XVI 2s (2S1/2)−3p (2P3/2) 23.51 A A A
Ca XV 2s22p2 (3P0)−2s22p3d (3D1) 22.73 D D D
O VII Heα 1s2 (1S0)−1s2s (3S1) 22.10 A A A
O VII Heα 1s2 (1S0)−1s2p (3P1) 21.81 A A A
O VII Heα 1s2 (1S0)−1s2p (1P1) 21.60 A A A
Ca XVI 2s22p (2P1/2)−2s23d (2D3/2) 21.45 B B B
Cr XV 2s22p6 (1S0)−2s22p53s (3P2) 21.21 B B − Line not in APEC
Ca XVII 2s2p (1P1)−2s3d (1D2) 21.20 B B − Line not in APEC
Cr XV 2s22p6 (1S0)−2s22p53s (1P1) 21.15 A A A
N VII Lyβ1 1s (2S1/2)−3p (2P3/2) 20.91 A A A
N VII Lyβ2 1s (2S1/2)−3p (2P1/2) 20.91 A A A
Cr XV 2s22p6 (1S0)−2s22p53s (3P1) 20.86 A A − Line not in APEC
N VII Lyγ1 1s (2S1/2)−4p (2P3/2) 19.83 A A A
N VII Lyγ2 1s (2S1/2)−4p (2P1/2) 19.83 A A A
Ca XVIII 2p (2P3/2)−3d (2D5/2) 19.79 B B A
O VIII Lyα1 1s (2S1/2)−2p (2P3/2) 18.97 A A A
O VIII Lyα2 1s (2S1/2)−2p (2P1/2) 18.97 A A A
O VII Heβ 1s2 (1S0)−1s3p (1P1) 18.63 C C C
Cr XV 2s22p6 (1S0)−2s22p53d (1P1) 18.50 B B − Line not in APEC
O VII Heγ 1s2 (1S0)−1s4p (1P1) 17.77 A A A Miss lines at 17.8 Å and 18.1 Å
Fe XVIII 2s2p6 (2S1/2)−2s22p43p (2P3/2) 17.61 C C B
Fe XVI 2s22p63p (2P3/2)−2p53s3p (4P5/2) 17.50 B B C
O VII Heδ 1s2 (1S0)−1s5p (1P1) 17.40 A A C
Fe XVIII 2s2p6 (2S1/2)−2s22p43p (2P3/2) 17.36 C D D
Fe XVI 2s22p63p (2P3/2)−2p53s3p (2D5/2) 17.21 B B B
O VII Heϵ 1s2 (1S0)−1s6p (1P1) 17.20 B B B
Fe XVII 2s22p6 (1S0)−2s22p53s (3P2) 17.10 A B B
Fe XVII 2s22p6 (1S0)−2s22p53s (1P1) 17.05 A A A
Fe XVII 2s22p6 (1S0)−2s22p53s (3P1) 16.78 A A B
Fe XVI 2s22p63p (2P3/2)−2p53s3p (2S1/2) 16.62 − − B Line not in SPEX
Fe XVII 2s22p6 (1S0)−2s22p53p (3D2) 16.34 A A C
Fe XVIII 2s2p6 (2S1/2)−2s2p53s (4P3/2) 16.30 B B C
Fe XIX 2s2p5 (3P1)−2s22p33p (3P2) 16.28 − − C Line not in SPEX
Fe XVII 2s22p6 (1S0)−2s22p53p (3P2) 16.24 C C C
Fe XVIII 2s2p6 (2S1/2)−2s2p53s (2P3/2) 16.17 A A A
Fe XIX 2s2p5 (3P2)−2s22p33p (3P2) 16.11 − − C Line not in SPEX
Fe XVIII 2s22p5 (2P3/2)−2s22p43s (4P5/2) 16.07 C C C
Fe XVIII 2s22p5 (2P3/2)−2s22p43s (2P3/2) 16.00 B B B
Fe XVII 2s22p6 (1S0)−2s22p53p (1D2) 16.00 B B B
O VIII Lyβ1 1s (2S1/2)−3p (2P3/2) 16.00 B B B
O VIII Lyβ2 1s (2S1/2)−3p (2P1/2) 16.00 B B B
Fe XVIII 2s22p5 (2P1/2)−2s22p43s (2D3/2) 15.87 B B B
Fe XVIII 2s22p5 (2P3/2)−2s22p43s (4P3/2) 15.83 A A C
Fe XVIII 2s22p5 (2P3/2)−2s22p43s (2P1/2) 15.77 A A B
Fe XVIII 2s22p5 (2P3/2)−2s22p43s (2D5/2) 15.63 C C A
Fe XVIII 2s2p6 (2S1/2)−2s2p53s (2P3/2) 15.49 − − B Line not in SPEX
Fe XVII 2s22p6 (1S0)−2s22p53d (3P1) 15.45 A A A
Fe XVIII 2s22p5 (2P1/2)−2s22p43s (2S1/2) 15.45 A A A
Fe XVIII 2s22p5 (2P3/2)−2s22p43p (2D5/2) 15.39 D D D
Fe XVII 2s22p6 (1S0)−2s22p53d (3D1) 15.26 B A B
Fe XVI 2s22p63s (2S1/2)−2p53s3d (2P1/2) 15.21 B B − Line not in APEC
O VIII Lyγ1 1s (2S1/2)−4p (2P3/2) 15.18 A B A
O VIII Lyγ2 1s (2S1/2)−4p (2P1/2) 15.18 A B A
Fe XVI 2s22p64d (2D5/2)−2p53d4d (4D7/2) 15.08 A A B
Fe XIX 2s22p4 (3P2)−2s22p33s (5S2) 15.08 A A B
Fe XVI 2s22p64f (2F7/2)−2p53d4f (4G9/2) 15.03 B B B
Fe XVII 2s22p6 (1S0)−2s22p53d (1P1) 15.01 A A A
O VIII Lyδ1 1s (2S1/2)−5p (2P3/2) 14.82 B A A
O VIII Lyδ2 1s (2S1/2)−5p (2P1/2) 14.82 B A A
Fe XIX 2s22p4 (3P2)−2s22p33s (3D3) 14.67 A B D
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2F5/2) 14.53 C C D
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2D5/2) 14.37 B B B Miss a line at 14.41 Å
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2S1/2) 14.26 A A B
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2P3/2) 14.21 A A C
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2D5/2) 14.20 A A C
Ni XIX 2s22p6 (1S0)−2s22p53s (3P2) 14.07 B B A
Ni XIX 2s22p6 (1S0)−2s22p53s (1P1) 14.04 B B A
Fe XVIII 2s22p5 (2P3/2)−2s22p43d (2D5/2) 13.95 B B B
Fe XIX 2s22p4 (3P2)−2s22p33d (5D3) 13.93 D D − Line not in APEC
Fe XVII 2s22p6 (1S0)−2s2p63p (3P1) 13.89 A A D
Fe XVII 2s22p6 (1S0)−2s2p63p (1P1) 13.82 C C B
Fe XIX 2s22p4 (3P2)−2s22p33d (3D3) 13.80 B B A
Ni XIX 2s22p6 (1S0)−2s22p53s (3P1) 13.78 B B A
Fe XIX 2s22p4 (1D2)−2s22p33d (1F3) 13.74 A A − Line not in APEC
Ne IX Heα 1s2 (1S0)−1s2s (3S1) 13.70 A B A Ne VIII blend
Fe XIX 2s22p4 (3P2)−2s22p33d (3F3) 13.63 D D C
Ne IX Heα 1s2 (1S0)−1s2p (3P1) 13.55 A A B Ne VIII blend
Fe XIX 2s22p4 (3P2)−2s22p33d (3D3) 13.52 B B B
Fe XIX 2s22p4 (3P2)−2s22p33d (3P2) 13.49 C C D
Fe XIX 2s22p4 (3P2)−2s22p33d (3S1) 13.45 A A A
Ne IX Heα 1s2 (1S0)−1s2p (1P1) 13.45 A A A Ne VIII blend
Fe XVIII 2s22p5 (2P3/2)−2s2p53p (2D5/2) 13.37 A B D
Fe XVIII 2s22p5 (2P3/2)−2s2p53p (4P5/2) 13.32 A A D
Fe XX 2s22p3 (2D5/2)−2s22p23d (4F7/2) 13.27 B B D
Fe XX 2s22p3 (2D5/2)−2s22p23d (4P5/2) 13.14 A A A
Fe XVII 2s22p6 (1S0)−2s2p63d (1D2) 13.12 C C A
Fe XX 2s22p3 (4S3/2)−2s22p23d (4D5/2) 13.05 B B D
Fe XX 2s22p3 (4S3/2)−2s22p23d (4F5/2) 12.95 A A B
Fe XIX 2s22p4 (3P2)−2s2p43p (5D3) 12.92 A A A
Fe XX 2s22p3 (4S3/2)−2s22p23d (2F5/2) 12.90 B/C B/C A
Fe XX 2s22p3 (4S3/2)−2s22p23d (4P5/2) 12.84 A A D
Fe XX 2s22p3 (4S3/2)−2s22p23d (4P3/2) 12.82 A A D
Fe XX 2s22p3 (4S3/2)−2s22p23d (4P1/2) 12.81 A A D
Fe XXII 2s2p2 (2D3/2)−2s2p3s (2P1/2) 12.76 A A A
Ni XIX 2s22p6 (1S0)−2s22p53d (3D1) 12.66 A A A
Fe XX 2s22p3 (4S3/2)−2s2p33p (4P5/2) 12.59 C C B
Ni XIX 2s22p6 (1S0)−2s22p53d (1P1) 12.44 A A B
Fe XXI 2s22p2 (3P1)−2s22p3d (3D1) 12.40 B B B
Fe XXI 2s22p2 (3P0)−2s22p3d (3D1) 12.29 C C B
Fe XVII 2s22p6 (1S0)−2s22p54d (3D1) 12.26 A A A
Ne X Lyα2 1s (2S1/2)−2p (2P1/2) 12.14 A A A
Ne X Lyα1 1s (2S1/2)−2p (2P3/2) 12.13 A A A
Fe XVII 2s22p6 (1S0)−2s22p54d (1P1) 12.12 A A A
Fe XXI 2s22p2 (3P0)−2s2p23p (5P1) 11.99 B B A
Fe XXII 2s22p (2P3/2)−2s23d (2D5/2) 11.92 A A A
Ni XX 2s22p5 (2P3/2)−2s22p43d (2D3/2) 11.86 A A B SPEX v2 calculation
Ni XX 2s22p5 (2P3/2)−2s22p43d (2D5/2) 11.83 C C C SPEX v2 calculation
Fe XXII 2s22p (2P1/2)−2s23d (2D3/2) 11.77 B B B
Fe XXIII 2s2p (1P1)−2s3d (1D2) 11.74 A A B
Ni XX 2s22p5 (2P3/2)−2s22p43d (2D5/2) 11.64 B B A SPEX v2 calculation
Ne IX Heβ 1s2 (1S0)−1s3p (1P1) 11.55 A A A
Fe XVIII 2s22p5 (2P3/2)−2s22p44d (2F5/2) 11.53 B A A
Fe XVIII 2s22p5 (2P3/2)−2s22p44d (2D5/2) 11.43 C C C
Fe XVIII 2s22p5 (2P3/2)−2s22p44d (2F5/2) 11.33 C C B
Fe XVII 2s22p6 (1S0)−2s22p55d (1P1) 11.25 A A A
Na X Heα 1s2 (1S0)−1s2s (3S1) 11.19 B A A
Fe XVII 2s22p6 (1S0)−2s22p55d (3D1) 11.13 A A A
Fe XVII 2s22p6 (1S0)−2s2p64p (1P1) 11.03 − − A Line not in SPEX
Na X Heα 1s2 (1S0)−1s2p (1P1) 11.00 B B A
Fe XIX 2s22p4 (3P2)−2s22p34d (3D3) 10.81 D D D
Fe XVII 2s22p6 (1S0)−2s22p56d (1P1) 10.77 A A A
Fe XIX 2s22p4 (3P2)−2s22p34d (3D3) 10.66 B/C B/C B
Fe XIX 2s22p4 (3P2)−2s22p34d (3S1) 10.62 B B C
Fe XVIII 2s22p5 (2P3/2)−2s22p45d (2D5/2) 10.54 C C C
Fe XVII 2s22p6 (1S0)−2s22p57d (1P1) 10.50 A A A
Fe XVIII 2s22p5 (2P3/2)−2s22p45d (2F5/2) 10.45 B B C
Fe XIX 2s22p4 (3P2)−2s22p34d (3D3) 10.45 B B C
Fe XVII 2s22p6 (1S0)−2s22p57d (3D1) 10.39 B A B
Fe XVIII 2s22p5 (2P3/2)−2s22p45d (2F5/2) 10.36 C C C
Fe XVII 2s22p6 (1S0)−2s22p58d (1P1) 10.34 A A − Line not in APEC
Ne X Lyβ1 1s (2S1/2)−3p (2P3/2) 10.24 A A A
Ne X Lyβ2 1s (2S1/2)−3p (2P1/2) 10.24 A A A
Fe XX 2s22p3 (2P3/2)−2s22p24d (2P3/2) 10.18 A B B
Ni XIX 2s22p6 (1S0)−2s22p54d (3D1) 10.11 B B B
Fe XX 2s22p3 (4S3/2)−2s22p24d (4F5/2) 10.05 B/C B/C − Line not in APEC
Na XI Lyα2 1s (2S1/2)−2p (2P1/2) 10.02 A A A
Na XI Lyα1 1s (2S1/2)−2p (2P3/2) 10.02 A A A
Fe XX 2s22p3 (4P3/2)−2s22p24d (4P3/2) 10.00 A A − Line not in APEC
Ni XIX 2s22p6 (1S0)−2s22p54d (1P1) 9.98 A A B
Fe XIX 2s22p4 (3P2)−2s22p35d (3D3) 9.84 C C C Miss lines at 9.89 Å and 9.79 Å
Ne X Lyγ1 1s (2S1/2)−4p (2P3/2) 9.71 A A A
Ne X Lyγ2 1s (2S1/2)−4p (2P1/2) 9.71 A A A
Fe XIX 2s22p4 (3P2)−2s22p35d (3P2) 9.69 A A A
Fe XXI 2s22p2 (3P1)−2s22p4d (3D1) 9.55 B B C Miss a line at 9.62 Å
Fe XXI 2s22p2 (3P0)−2s22p4d (3D1) 9.48 A A B
Ne X Lyδ1 1s (2S1/2)−5p (2P3/2) 9.48 A A B
Ne X Lyδ2 1s (2S1/2)−5p (2P1/2) 9.48 A A B
Fe XIX 2s22p4 (3P2)−2s22p36d (3D3) 9.39 B B − Line not in APEC
Ni XX 2s22p5 (2P3/2)−2s22p44d (2P5/2) 9.39 B B − SPEX v2; line not in APEC
Mg XI Heα 1s2 (1S0)−1s2s (3S1) 9.31 A A A Mg X blend
Mg XI Heα 1s2 (1S0)−1s2p (3P1) 9.23 A A A Mg X blend
Mg XI Heα 1s2 (1S0)−1s2p (1P1) 9.17 A A A Mg X blend
Fe XX 2s22p3 (4S3/2)−2s22p25d (4P3/2) 9.06 C D C
Fe XXII 2s22p (2P1/2)−2s24d (2D3/2) 8.98 B B D
Fe XXIII 2s2p (1P1)−2s4s (1S0) 8.91 A A A
Fe XXIII 2s2p (1P1)−2s4d (1D2) 8.81 B B D
Fe XXII 2s22p (2P1/2)−2s2p4d (2D3/2) 8.72 B/C B/C B/C
Fe XX 2s22p3 (4P3/2)−2s22p26d (4P3/2) 8.63 B B D
Fe XXI 2s22p2 (3P0)−2s22p5d (3D1) 8.55 B/C B/C A
Mg XII Lyα1 1s (2S1/2)−2p (2P3/2) 8.42 A A A
Mg XII Lyα2 1s (2S1/2)−2p (2P1/2) 8.42 A A A
Fe XXIII 2s2p (1P1)−2s4p (1P1) 8.30 A A B
Fe XXII 2s22p (2P3/2)−2s25d (2D5/2) 8.16 B B D
Fe XXII 2s22p (2P1/2)−2s25d (2D3/2) 8.09 A A A
Mg X 2p (2P3/2)−1s2p3p (2D5/2) 8.07 A A A
Fe XXIV 2s (2S1/2)−4p (2P3/2) 7.98 A A B
Al XII Heα 1s2 (1S0)−1s2s (3S1) 7.87 A A A Al XI blend
Mg XI Heβ 1s2 (1S0)−1s3p (1P1) 7.85 C C A
Al XII Heα 1s2 (1S0)−1s2p (3P1) 7.80 A A A Al XI blend
Al XII Heα 1s2 (1S0)−1s2p (1P1) 7.76 A A A Al XI blend
Mg XI Heγ 1s2 (1S0)−1s4p (1P1) 7.47 A A A
Mg XI Heδ 1s2 (1S0)−1s5p (1P1) 7.31 A A A
Mg XI Heϵ 1s2 (1S0)−1s6p (1P1) 7.22 A A C
Al XIII Lyα1 1s (2S1/2)−2p (2P3/2) 7.17 A A A
Al XIII Lyα2 1s (2S1/2)−2p (2P1/2) 7.17 A A A
Mg XII Lyβ1 1s (2S1/2)−3p (2P3/2) 7.11 A A A
Mg XII Lyβ2 1s (2S1/2)−3p (2P1/2) 7.11 B B A
Si XIII Heα 1s2 (1S0)−1s2s (3S1) 6.74 A A A Si XII blend
Mg XII Lyγ1 1s (2S1/2)−4p (2P3/2) 6.74 A A A
Mg XII Lyγ2 1s (2S1/2)−4p (2P1/2) 6.74 A A A
Si XIII Heα 1s2 (1S0)−1s2p (3P1) 6.68 A A A Si XII blend
Si XIII Heα 1s2 (1S0)−1s2p (1P1) 6.65 A A A Si XII blend
Mg XII Lyδ1 1s (2S1/2)−5p (2P3/2) 6.58 A A A
Mg XII Lyδ2 1s (2S1/2)−5p (2P1/2) 6.58 A A A
Si XIV Lyα1 1s (2S1/2)−2p (2P3/2) 6.18 A A A
Si XIV Lyα2 1s (2S1/2)−2p (2P1/2) 6.18 A A A
Si XII 2p (2P3/2)−1s2p3p (2D5/2) 5.82 A A A
Si XIII Heβ 1s2 (1S0)−1s3p (1P1) 5.68 A A A
Si XIII Heγ 1s2 (1S0)−1s4p (1P1) 5.40 A A A
Si XIV Lyβ1 1s (2S1/2)−3p (2P3/2) 5.22 A A A
Si XIV Lyβ2 1s (2S1/2)−3p (2P1/2) 5.22 A A A
S XV Heα 1s2 (1S0)−1s2s (3S1) 5.10 A A A S XIV blend
S XV Heα 1s2 (1S0)−1s2p (3P1) 5.07 A A A S XIV blend
S XV Heα 1s2 (1S0)−1s2p (3P2) 5.06 A A A S XIV blend
S XV Heα 1s2 (1S0)−1s2p (1P1) 5.04 A A A S XIV blend
S XVI Lyα1 1s (2S1/2)−2p (2P3/2) 4.73 A A A
S XVI Lyα2 1s (2S1/2)−2p (2P1/2) 4.73 A A A
S XV Heβ 1s2 (1S0)−1s3p (1P1) 4.30 A A A
Ar XVII Heα 1s2 (1S0)−1s2s (3S1) 3.99 A A A Ar XVI blend
Ar XVII Heα 1s2 (1S0)−1s2p (3P1) 3.97 A A A Ar XVI blend
Ar XVII Heα 1s2 (1S0)−1s2p (3P2) 3.97 A A A Ar XVI blend
Ar XVII Heα 1s2 (1S0)−1s2p (1P1) 3.95 A A A Ar XVI blend
Ca XIX Heα 1s2 (1S0)−1s2s (3S1) 3.21 A A A Ca XVIII blend
Ca XIX Heα 1s2 (1S0)−1s2p (3P1) 3.19 A A A Ca XVIII blend
Ca XIX Heα 1s2 (1S0)−1s2p (3P2) 3.19 A A A Ca XVIII blend
Ca XIX Heα 1s2 (1S0)−1s2p (1P1) 3.18 A A A Ca XVIII blend
Fe XXV Heα 1s2 (1S0)−1s2s (3S1) 1.87 A A B Fe XXIV blend
Fe XXV Heα 1s2 (1S0)−1s2p (3P1) 1.86 A A B Fe XXIV blend
Fe XXV Heα 1s2 (1S0)−1s2p (3P2) 1.86 A A B Fe XXIV blend
Fe XXV Heα 1s2 (1S0)−1s2p (1P1) 1.85 A A B Fe XXIV blend

Notes. Lists of lines detected at >5σ in the Capella spectrum.

(a)

Rest-frame wavelengths in SPEX database.

(b)

A: Model line wavelength and flux match with the data. B: Wavelength matches, but the model line flux is off by >20%. C: Flux matches within 20%, but the line central energy differs by >3σ. D: Though the line is present, neither its wavelength nor the flux matches with the data.

(c)

EBIT rates (Sect. 2) incorporated.

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