Cepheid Metallicity in the Leavitt Law (C–MetaLL) survey - VII. High-resolution IGRINS spectroscopy of 23 classical Cepheids: Validating NIR abundances

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Volume 706 (February 2026)

A&A, 706 (2026) A225

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Table 2.

Derived atmospheric parameters for the sample of classical Cepheids.

ID	HJD	Phase	$T_{eff}^{Phot}$ $T_{\mathrm{eff}}^{\mathrm{Phot}}$	$T_{eff}^{Spec}$ $T_{\mathrm{eff}}^{\mathrm{Spec}}$	log g	V_rad	v_br
	(2400000.+)		(K)	(K)		(km s⁻¹)	(km s⁻¹)
AQ Car	59576.853883	0.043	5547 ± 67	5500 ± 100	1.5 ± 0.1	58.3 ± 0.2	13.0 ± 0.7
AQ Pup	59488.888079	0.379	4639 ± 73	5000 ± 110	0.9 ± 0.1	121.0 ± 0.2	7.0 ± 0.5
DR Vel	59505.861295	0.350	5048 ± 75	5200 ± 80	1.3 ± 0.1	94.8 ± 0.2	8.0 ± 1.2
RV Sco	59695.690020	0.610	5238 ± 67	5100 ± 50	1.5 ± 0.1	53.8 ± 0.2	12.0 ± 0.6
S Nor	59656.791525	0.135	5382 ± 45	5300 ± 50	1.5 ± 0.1	51.5 ± 0.2	12.0 ± 0.8
SS Cma	59482.854633	0.099	5583 ± 67	5650 ± 80	1.8 ± 0.1	126.1 ± 0.2	14.0 ± 0.8
S Tra	59651.740433	0.565	5261 ± 54	5050 ± 80	1.2 ± 0.1	74.3 ± 0.2	15.0 ± 2.0
SV Vel	59436.455912	0.643	4963 ± 86	5150 ± 60	1.2 ± 0.1	121.4 ± 0.3	13.0 ± 2.2
SV Vul	59705.903788	0.669	4731 ± 75	5050 ± 75	0.8 ± 0.1	77.4 ± 0.3	15.0 ± 0.6
T Mon	59651.514273	0.941	5592 ± 193	5700 ± 125	1.3 ± 0.1	117.2 ± 0.3	18.0 ± 1.0
T Mon	59694.465267	0.529	4769 ± 129	4850 ± 75	0.9 ± 0.1	147.5 ± 0.3	14.0 ± 1.2
U Aql	59695.852863	0.935	5987 ± 144	6200 ± 75	2.0 ± 0.1	39.4 ± 0.2	14.0 ± 0.7
U Car	59603.788465	0.045	5524 ± 114	6000 ± 300	1.3 ± 0.2	49.4 ± 0.4	17.0 ± 1.5
U Sgr	59695.837884	0.949	5912 ± 111	5950 ± 135	1.9 ± 0.1	45.0 ± 0.2	15.0 ± 0.9
V0636 Sco	59692.696240	0.657	5244 ± 69	4950 ± 90	1.4 ± 0.1	97.5 ± 0.3	16.0 ± 0.5
VZ Pup	59488.882649	0.546	4873 ± 77	5000 ± 80	1.0 ± 0.1	138.2 ± 0.2	7.0 ± 0.5
W Gem	59641.518548	0.025	6045 ± 135	6150 ± 160	1.9 ± 0.2	96.1 ± 0.2	14.0 ± 0.4
WX Pup	59488.866445	0.486	5270 ± 69	5300 ± 110	1.5 ± 0.1	117.7 ± 0.2	7.0 ± 0.5
WZ Sgr	59695.870539	0.934	5971 ± 157	5650 ± 70	1.4 ± 0.1	13.6 ± 0.3	18.0 ± 0.8
X Pup	59488.859321	0.738	4742 ± 73	4800 ± 120	0.8 ± 0.2	157.0 ± 0.4	21.0 ± 0.6
XX Car	59438.455383	0.764	5153 ± 82	5600 ± 65	1.5 ± 0.1	85.0 ± 0.2	14.0 ± 1.4
YZ Car	59578.864370	0.009	5573 ± 147	5900 ± 140	1.6 ± 0.1	67.5 ± 0.2	14.0 ± 0.6
YZ Car	59582.821720	0.227	5129 ± 119	5500 ± 60	1.3 ± 0.1	70.6 ± 0.2	10.0 ± 0.6

OGLE LMC-CEP-0512	59491.680453	0.948	5645 ± 122	5550 ± 190	1.1 ± 0.2	334.2 ± 0.8	30.0 ± 2.0
OGLE LMC-CEP-0992	59588.610443	0.232	5310 ± 70	5300 ± 70	0.9 ± 0.1	355.2 ± 0.2	11.0 ± 0.6

Notes. The columns include the star identifier (ID), the heliocentric Julian date (HJD), the phase, the effective temperature and uncertainties from photometry ( $T_{eff}^{Phot}$ $T_{\mathrm{eff}}^{\mathrm{Phot}}$ ) and spectroscopy ( $T_{eff}^{Spec}$ $T_{\mathrm{eff}}^{\mathrm{Spec}}$ ), the surface gravity (log g), the radial velocity (V_rad), and the broadening velocity (v_broad).

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