Fundamental parameters of bright Ap stars from wide-range energy distributions and advanced atmospheric models

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Table 1

Fudamental parameters of Ap stars.

Name

He-norm

He-weak

R_inter^a, R_⊙

⟨ B_s ⟩ , kG

T_eff, K

log (g)

R, R_⊙

L, L_⊙

M, M_⊙

T_eff, K

log (g)

R, R_⊙

L, L_⊙

M, M_⊙

HD 137909

8100

3.9

2.47 ± 0.07

23.69 ± 1.93

1.77 ± 0.51

8050

4.0

2.50 ± 0.07

23.67 ± 1.91

2.28 ± 0.65

2.63 ± 0.09¹

5.4

HD 201601

7550

4.0

2.07 ± 0.05

12.56 ± 0.94

1.56 ± 0.44

7550

4.0

2.06 ± 0.05

12.44 ± 0.93

1.55 ± 0.43

2.20 ± 0.12²

4.0

HD 137949

7400

4.0

2.13 ± 0.13

12.27 ± 1.83

1.66 ± 0.58

7400

4.0

2.13 ± 0.13

12.27 ± 1.83

1.66 ± 0.58

5.0

HD 24712³

7250

4.1

1.77 ± 0.04

7.81 ± 0.57

1.44 ± 0.40

3.1

HD 101065⁴

6400

4.2

1.98 ± 0.03

5.92 ± 0.37

2.27 ± 0.59

2.3

HD 103498⁵

9300

3.5

4.56 ± 0.77

140.28 ± 50.39

2.40 ± 1.36

9500

3.6

4.39 ± 0.75

141.57 ± 51.35

2.80 ± 1.60

HD 128898⁶

7500

4.1

1.94 ± 0.004

10.74 ± 0.33

1.73 ± 0.41

1.967 ± 0.066⁷

~2.0

Notes. The error bars of M and R are average errors computed taking parallax uncertainity and additionally assuming errors of ΔT_eff = 50 K and Δlog (g) = 0.1 dex into account. Larger errors found for HD 103498 result from a large parallax uncertainity.

^(a)

Radius derived by means of interferometry.

⁽¹⁾

Bruntt et al. (2010);

⁽²⁾

Perraut et al. (2011);

⁽³⁾

Shulyak et al. (2009);

⁽⁴⁾

Shulyak et al. (2010b);

⁽⁵⁾

Pandey et al. (2011);

⁽⁶⁾

Kochukhov et al. (2009);

⁽⁷⁾

Bruntt et al. (2008).

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