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Table 3

α Cir pulsation frequencies extracted from BRITE data.

Data Frequency Amplitude Phase Sig
(μHz) (mmag) (0-1)

Frequency f1
red BRITE [2442.0574] 0.545(47) 0.191(14) 33.2
blue BRITE 2442.0574(31) 1.72(10) 0.165(09) 63.1
WIRE 2442.0566(2) 0.652(5)

Frequency f7
red BRITE 2472.2401(88) 0.249(43) 0.057(32) 6.8
blue BRITE
WIRE 2472.2272(5) 0.188(5)

Notes. For the red BRITE data (Johnson R), we fixed f1 to the best-fit value (in parentheses) from the blue BRITE data (Johnson B) since the pulsation amplitude is larger in blue and has higher significance, despite the larger noise level in blue. The last column lists the spectral significance derived with SigSpec. Uncertainties are calculated via Monte Carlo simulations implemented in Period04. The reference for WIRE (Johnson V) is Table 3 of Bruntt et al. (2009).

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