On the use of the Fourier transform to determine the projected rotational velocity of line-profile variable B stars

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Volume 569 (September 2014)

A&A, 569 (2014) A118

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Table 1

Stellar parameters and line-profile properties of seven selected variables.

Star →	HD 131120	HD 105382	HD 46328	HD 16582	HD 111123	HD 74195	HD 181558
Parameter ↓


T_eff (K)	18 250	17 400	27 500	23 000	27 000	16 000	14 700
log g (cgs)	4.1	4.2	3.8	3.8	3.7	3.9	4.2
Spectral	B7IIIp	B6III	B0.7IV	B2IV	B0.5IV	B3IV	B5III
type
Variability	Si spots	Si spots	radial	radial	non-radial	non-radial	non-radial
type			mode	mode	p modes	g modes	g modes
Selected	Si ii 4128 Å	Si ii 4128 Å	Si iii 4552 Å	Si iii 4552 Å	Si iii 4552 Å	Si ii 4128 Å	Si ii 4128 Å
line
vsini ^a	60 ± 5 ^b	70 ± 5 ^b	15.5 ± 1.5 ^c	1 ± 1 ^d	18 ± 5 ^e	20 ± 3 ^e	9.5 ± 2.5 ^f
(km s^-1)
Dominant	0.63745	0.77214	4.77153	6.20587	5.95867	0.35745	0.80783
frequency (d^-1)
EW (mÅ)
Range	[84,107]	[80,105]	[199,241]	[136,156]	[252,293]	[74,98]	[100,110]
St.dev.	6.63	6.47	7.37	4.85	6.27	4.38	2.88
⟨ v ⟩ (km s^-1)
Range	[–4.70,5.85]	[–6.77,9.02]	[–16.19,18.37]	[–5.16,7.09]	[–2.98,2.75]	[–5.33,4.54]	[–6.66,7.52]
St. dev.	2.93	3.77	11.52	5.15	1.12	2.12	4.58
⟨ v² ⟩ (km² s^-2)
Range	[754,987]	[987,1496]	[118,502]	[113,194]	[552,871]	[319,579]	[64,220]
St.dev.	45.8	98.2	110.1	21.5	58.7	56.8	34.2
⟨ v³ ⟩ (km³ s^-3)
Range	[–9177,13887]	[–25765,25270]	[–13635,15814]	[–3275,2948]	[–7191,6562]	[–8674,3636]	[–1468,4688]
St. dev.	5740	11413	7741	1861	2254	2305	1539
1st zero FT (km s^-1)
Range	[52.7,60.7]	[43.4,78.8]	[9.1,17.8]	[6.8,15.6]	[15.1,46.1]	[6.1,27.5]	[6.3,26.0]
St. dev.	1.60	6.16	2.04	2.29	8.72	5.40	6.13
v_macro (km s^-1)
Range	[11.1,30.0]	[10.8,64.2]	[14.8,21.9]	[14.8,22.7]	[29.4,54.3]	[0.0,22.2]	[1.3,25.9]
St. dev.	3.64	10.50	1.47	1.73	6.67	4.70	5.54

Notes. The spectral types were taken from the Simbad database.

^(a)

Value deduced from detailed line-profile fitting relying on spot or pulsation models:

^(b)

Briquet et al. (2004);

^(c)

Saesen et al. (2006);

^(d)

Aerts et al. (1992);

^(e)

Briquet & Aerts (2003);

^(f)

De Cat et al. (2005).

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