Ground-based observations of the β Cephei CoRoT main target HD 180 642: abundance analysis and mode identification

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Table 2:

Amplitudes and phases of the leastsquares fit to the merged U, B and V+ light curves of HD 180 642.
Freq.	U & u		B & v		V & y & V
(d^-1)	Ampl	Phase	Ampl	Phase	Ampl	Phase
	(mmag)	(rad)	(mmag)	(rad)	(mmag)	(rad)
f₁ = 5.48694	82.7(7)	2.884(9)	48.1(5)	2.88(1)	38.1(5)	2.86(1)
2f₁ = 10.97388	8.2(7)	1.48(9)	6.6(5)	1.52(8)	5.3(5)	1.4(1)
3f₁ = 16.46082	4.3(7)	2.0(2)	4.3(5)	2.1(1)	3.6(5)	1.9(2)
f₂^p = 0.30818	4.9(7)	0.9(2)	3.1(5)	1.1(2)	1.6(5)	0.9(4)
f₃^p = 7.36673	4.5(7)	5.4(2)	3.1(5)	5.4(2)	2.2(5)	5.7(3)
Var. Red.	96.6%		95.3%		81.8%
Residual rms (mmag)	11.4		7.9		12.9

Errors in units of the last digit are given in brackets. The amplitude is expressed in millimag, and the phase is given in radians. The adopted reference epoch for $\phi=0.0$ corresponds to HJD 2 447 963.2564. For each combined dataset the total variance reduction of the quintu-periodic model and the root mean square (rms) of the residuals is reported.

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