X-ray properties of RR Lyrae and Cepheid variables from eROSITA

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Volume 705 (January 2026)

A&A, 705 (2026) A231

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Table 2.

Same as Table 1 but for Cepheids.

Name	Type	Sep	posErr	σ_DET	Distance	Flux	Luminosity
		[arcsec]	[arcsec]		[pc]	[mW m⁻²]	[erg s⁻¹]
bet Dor^*	CEP	1.06	0.98	1941	$343_{- 15}^{+ 14}$ $343_{-15}^{+14}$	(2.69 ± 0.13)×10⁻¹³	$3 . 78_{- 0.50}^{+ 0.52} \times 10^{30}$ $3.78_{-0.50}^{+0.52} \times 10^{30}$
l Car^*	CEP	3.57	1.07	1104	$515_{- 29}^{+ 33}$ $515_{-29}^{+33}$	(6.11 ± 0.42)×10⁻¹³	$1 . 94_{- 0.34}^{+ 0.41} \times 10^{31}$ $1.94_{-0.34}^{+0.41} \times 10^{31}$
OGLE-BLG-T2CEP-1084	T2	2.49	2.55	64.48	$1227_{- 28}^{+ 35}$ $1227_{-28}^{+35}$	(2.40 ± 0.47)×10⁻¹³	$4 . 33_{- 0.99}^{+ 1.14} \times 10^{30}$ $4.33_{-0.99}^{+1.14} \times 10^{30}$
zet Gem^*	CEP	0.78	3.13	23.1	$326_{- 23}^{+ 28}$ $326_{-23}^{+28}$	(8.81 ± 3.36)×10⁻¹⁴	$1 . 12_{- 0.53}^{+ 0.71} \times 10^{30}$ $1.12_{-0.53}^{+0.71} \times 10^{30}$
OGLE-GD-T2CEP-0065	T2	4.26	4.85	9.16	$3673_{- 456}^{+ 476}$ $3673_{-456}^{+476}$	(3.85 ± 1.68)×10⁻¹⁴	$6 . 21_{- 3.53}^{+ 5.18} \times 10^{31}$ $6.21_{-3.53}^{+5.18} \times 10^{31}$
AX Cir	CEP	1.12	4.46	6.42	$550_{- 76}^{+ 101}$ $550_{-76}^{+101}$	(2.33 ± 1.23)×10⁻¹⁴	$8 . 42_{- 5.48}^{+ 9.62} \times 10^{29}$ $8.42_{-5.48}^{+9.62} \times 10^{29}$
MY Pup	CEP	4.73	4.93	5.46	$815_{- 26}^{+ 29}$ $815_{-26}^{+29}$	(1.49 ± 0.90)×10⁻¹⁴	$1 . 18_{- 0.75}^{+ 0.86} \times 10^{30}$ $1.18_{-0.75}^{+0.86} \times 10^{30}$
OGLE-GD-T2CEP-0007	T2	4.25	5.49	5.23	$1342_{- 127}^{+ 160}$ $1342_{-127}^{+160}$	(3.53 ± 2.19)×10⁻¹⁴	$7 . 61_{- 5.24}^{+ 7.84} \times 10^{30}$ $7.61_{-5.24}^{+7.84} \times 10^{30}$

Notes.

^(*)

X-ray flux likely affected by optical loading.

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