TT Arietis: New approach to the analysis of quasi-periodic oscillations

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Volume 691 (November 2024)

A&A, 691 (2024) A112

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Table 2.

Average parameters of frequency groups.

	$\bar{f}$ $\overline{f}$ (d⁻¹) ^(a)		Duration (d) ^(b)		f_Δ (d⁻¹) ^(c)		f_A (d⁻¹) ^(d)		N_c^(e)
	P > 0.10	P > 0.15	P > 0.10	P > 0.15	P > 0.10	P > 0.15	P > 0.10	P > 0.15	P > 0.10	P > 0.15

Peaks ^(f)	42.5 and 77.5	42.5 and 80.0	...	...	...	...	...	...	...	...
Preferred range ^(g)	27–98	28–91	...	...	...	...	...	...	...	...
Minimum	20.01	21.39	0.03	0.03	−29.6	−22.0	1.0	0.6	3.0	3.0
Maximum	126.11	114.66	0.40	0.37	29.0	14.3	33.1	24.3	29.0	18.0
Mean	68.45	66.14	0.12	0.11	−0.2	−0.7	9.9	9.4	7.0	6.5
Standard deviation	24.640	22.088	0.083	0.070	8.62	8.07	6.32	5.25	4.42	3.70
Standard error of Mean	1.945	2.469	0.006	0.008	0.68	0.90	0.49	0.59	0.35	0.41

Notes. For each quantity, there are two columns, each representing a filter with different power (P): a column for frequencies with P ≥ 0.10 in the power spectrum, and another one for P ≥ 0.15. f_Δ, f_A, and N_c are explained in Sect. 2.2.

^(a)

Mean frequency of each group.

^(b)

Duration of each group.

^(c)

Frequency delta.

^(d)

Frequency amplitude.

^(e)

Number of completed cycles.

^(f)

Frequencies where most groups are found.

^(g)

Frequency range that encompasses 90% of the data.

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