Connections between the cycle-to-cycle light curve and O−C variations of non-Blazhko RR Lyrae stars

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Table 2.

TESS RRc stars.

Name	P₁	σ_e	σ_η	p^AIC	p^BIC	T_eff	log g	[Fe/H]	Remarks
	(d)	(×10⁻⁴ d)	(×10⁻⁴ d)			(K)	(cm s²)
[SHM2017] J282.06827+62.45832	0.249948	3.19	0.17	0.41	0.55	7140	3.92	−0.63	f₆₁
Gaia DR2 5476969341269561344	0.268693	1.51		0.63	0.79	7210	4.04	−1.44	M3, f₆₀
Gaia DR2 1650042086261498880	0.280923	0.91	0.56	0.97	0.81	7180	2.97^*	−1.06	M4, f₆₁
Gaia DR2 5280964179391935616	0.282452	1.01	0.27	0.73	0.95	6940	3.88	−1.35	f₆₁
[SHM2017] J280.68767+58.39747	0.292591	2.20	0.83	0.73	0.95	7010	4.12	−1.39	f₆₁
2MASS J04274606-6202513	0.294156	1.16	0.38	0.73	0.94	7420	3.48	−1.71
Gaia DR2 5264448926328694272	0.309862	2.02	1.04	0.73	0.95	6890	4.04	−1.35	f₆₁, f₆₃
Gaia DR2 5486632674089049472	0.314167	0.68		0.73	0.94	6820	3.86	−2.27	M3
Gaia DR2 4628067852624828672	0.316098	1.32	0.20	0.72	0.92	6900	3.87	−1.71	f₆₈
Gaia DR2 5285349822037246464	0.321226	0.73	0.18	0.74	0.94	7010	3.88	−2.26
HD 270239	0.321779	2.58	1.53	0.65	0.92	8230	3.89	−1.50
GSC 04450-00308	0.326734	0.53	0.35	0.73	0.95	6830	3.88	−1.83
[SHM2017] J281.12439+66.86821	0.337833	2.71	1.79	0.91	0.98	6810	3.85	−1.53	f₆₁, f₆₃
Gaia DR2 5482545510194122112	0.337873	2.75	0.35	0.46	0.57	7270	3.84	−1.57	f₆₈
Gaia DR2 4758809680772463232	0.34105	3.19	1.62	0.73	0.95	6870	3.83	−1.54	f₆₁, f₆₃
CRTS J165930.9+650919	0.341773	2.42	1.56	0.73	0.95	6790	3.21	−1.60	f₆₁, f₆₃
Gaia DR2 5264031833464989568	0.342671	1.72	1.62	0.74	0.94	6760	3.71	−1.58	f₆₁, f₆₃
Gaia DR2 2251757108828618496	0.343299	2.52	0.88	0.74	0.94	6470		−1.87	f₆₃, f₆₁
Gaia DR2 5280883674523697792	0.347276	5.11	1.64	0.74	0.94	6870		−1.84	f₆₁, f₆₃
Gaia DR2 1439840098963073152	0.357564	2.06	1.26	0.74	0.95	6880	3.78	−2.76	f₆₃, f₆₁
NSVS 3117163	0.35856	1.97	1.17	0.72	0.94	6730		−1.97	f₆₁, f₆₃
[SHM2017] J296.89770+71.59565	0.359776	2.47	0.33	0.67	0.91	6740		−2.31	f₆₀
Gaia DR2 5285510178935677312	0.385039	3.27	5.11	0.89	0.61	6850	3.82	−0.38	M4, f₆₁, f₆₃
CRTS J165523.7+573029	0.392964	2.18	2.16	0.74	0.95	6710	3.25^*	−2.49	f₆₁, f₆₃
[SHM2017] J285.32992+67.89109	0.39449	1.64	1.73	0.99	0.92	6940	4.04	−2.41	M4, f₆₁, f₆₃
CRTS J165435.7+655131	0.406081	1.75	2.09	0.74	0.94	6630	3.97	−2.65	f₆₁, f₆₃

Notes. Columns contain, in order, the name and main pulsation period, P₁; the fitted σ_e and σ_η parameters of the best statistical model and their probabilities, p^AIC and p^BIC, using the AIC and BIC criteria, respectively; some physical parameters: effective temperature (T_eff), surface gravitation acceleration (log g), and metallicity ([Fe/H]). The last column shows the additional frequencies detected and denoted⁽¹⁾ by Benkő et al. (2023) and the name of the optimal statistical model where it differs from the M2. The two log g values marked with asterisks are from the LAMOST Survey (Wang et al. 2024). ⁽¹⁾In their notation, the ratio of their frequencies is represented by the main frequency f₁: i.e. f_x := f₆₁ if f₁/f_x ≈ 0.61; f_x := f₆₃ if f₁/f_x ≈ 0.63; but f_x := f₆₈ if f_x/f₁ ≈ 0.68.

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