Searching for new cataclysmic variables in the Chandra Source Catalog

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Volume 690 (October 2024)

A&A, 690 (2024) A374

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Table C.1.

Results of approximation of X-ray spectra of objects from Tables 1 and B.1 by different models.

Name (2CXO)	J024131.0+593630	J044048.3+292434	J044147.9–015145	J063805.1–801854	J094607.7–311550	J104435.5–594045

ObsID	7152 + 7369	12677	11676	14925	15383	4495 + 6402
`tbabs x powerlaw`
N_H(×10²² cm⁻²)	0.42 ± 0.11	0.18^b (fixed)	0.04^b (fixed)	≲0.01	0.03 (fixed)	0.05 (fixed)
Γ	1.78 ± 0.14	0.54 ± 0.19	$1 . 78_{- 0.22}^{+ 0.23}$ $1.78^{+0.23}_{-0.22}$	$0 . 22_{- 0.08}^{+ 0.05}$ $0.22^{+0.05}_{-0.08}$	$0 . 48_{- 0.41}^{+ 0.40}$ $0.48^{+0.40}_{-0.41}$	$1 . 77_{- 0.37}^{+ 0.38}$ $1.77^{+0.38}_{-0.37}$
C-stat/dof	153.25/153	29.27/24	22.09/21	196.92/132	1.45/10	45.08/35

`tbabs x mekal`
N_H(×10²² cm⁻²)	$0 . 35_{- 0.08}^{+ 0.09}$ $0.35^{+0.09}_{-0.08}$	0.18^b (fixed)	0.04^b (fixed)	$0 . 45_{- 0.07}^{+ 0.08}$ $0.45^{+0.08}_{-0.07}$	0.03 (fixed)	0.05 (fixed)
kT(keV)	$5 . 54_{- 0.83}^{+ 1.12}$ $5.54^{+1.12}_{-0.83}$	≳55.54	$4 . 54_{- 1.46}^{+ 3.47}$ $4.54^{+3.47}_{-1.46}$	≳74.80	≳24.92	$3 . 50_{- 1.29}^{+ 4.09}$ $3.50^{+4.09}_{-1.29}$
Z(Z_⊙)	$2 . 90_{- 1.21}^{+ 1.91}$ $2.90^{+1.91}_{-1.21}$	1.0 (fixed)	1.0 (fixed)	1.0 (fixed)	1.0 (fixed)	1.0 (fixed)
C-stat/dof	144.18/152	42.83/24	21.55/21	314.20/132	4.93/10	43.49/35



Name (2CXO)	J123727.5+655211	J143435.3+334049	J155926.5–754311	J165219.0–441401	J173118.6+224248	J173332.5–181735

ObsID	6817 + 20443^c	4236 + 19645^c	14386	8145	3281	12944

`tbabs x powerlaw`
N_H(×10²² cm⁻²)	$0 . 08_{- 0.05}^{+ 0.06}$ $0.08^{+0.06}_{-0.05}$	0.009^a (fixed)	0.06^a (fixed)	$0 . 79_{- 0.29}^{+ 0.32}$ $0.79^{+0.32}_{-0.29}$	$0 . 17_{- 0.13}^{+ 0.15}$ $0.17^{+0.15}_{-0.13}$	$0 . 27_{- 0.06}^{+ 0.07}$ $0.27^{+0.07}_{-0.06}$
Γ	1.36 ± 0.06	$1 . 71_{- 0.31}^{+ 0.32}$ $1.71^{+0.32}_{-0.31}$	$1 . 95_{- 0.67}^{+ 0.77}$ $1.95^{+0.77}_{-0.67}$	$1 . 53_{- 0.33}^{+ 0.35}$ $1.53^{+0.35}_{-0.33}$	$2 . 23_{- 0.31}^{+ 0.34}$ $2.23^{+0.34}_{-0.31}$	1.36 ± 0.12
C-stat/dof	394.68/367	16.67/16	5.70/4	26.22/29	34.85/35	146.50/138

`tbabs x mekal`
N_H(×10²² cm⁻²)	≲0.08	0.009^a (fixed)	0.06^a (fixed)	$0 . 89_{- 0.27}^{+ 0.32}$ $0.89^{+0.32}_{-0.27}$	≲0.12	$0 . 26_{- 0.06}^{+ 0.05}$ $0.26^{+0.05}_{-0.06}$
kT(keV)	$38 . 28_{- 13.15}^{+ 31.40}$ $38.28^{+31.40}_{-13.15}$	≳5.16	≳2.00	$5 . 78_{- 2.01}^{+ 6.48}$ $5.78^{+6.48}_{-2.01}$	$2 . 97_{- 0.75}^{+ 0.88}$ $2.97^{+0.88}_{-0.75}$	$20 . 82_{- 8.61}^{+ 51.70}$ $20.82^{+51.70}_{-8.61}$
Z(Z_⊙)	≲1.46	1.0 (fixed)	1.0 (fixed)	$4 . 16_{- 3.12}^{+ 10.75}$ $4.16^{+10.75}_{-3.12}$	$1 . 24_{- 0.90}^{+ 1.92}$ $1.24^{+1.92}_{-0.90}$	≲15.59
C-stat/dof	397.16/366	18.52/16	5.89/4	23.93/28	30.63/34	146.34/137



Name (2CXO)	J173555.3–292530	J174133.7–284034		J182117.2–131405	J185603.2+021259	J190823.2+343328

ObsID	8703 + 8704	9564 + 9565 + 21605^c		7561	9613	13659

`tbabs x powerlaw`
N_H(×10²² cm⁻²)	0.002 (fixed)	0.21 ± 0.06		0.03 (fixed)	0.005 (fixed)	0.01 (fixed)
Γ	0.58 ± 0.51	$1 . 78_{- 0.09}^{+ 0.10}$ $1.78^{+0.10}_{-0.09}$		$1 . 74_{- 0.79}^{+ 0.88}$ $1.74^{+0.88}_{-0.79}$	$2 . 79_{- 0.63}^{+ 0.64}$ $2.79^{+0.64}_{-0.63}$	$1 . 15_{- 0.24}^{+ 0.25}$ $1.15^{+0.25}_{-0.24}$
C-stat/dof	4.02/6	275.22/273		1.34/1	1.98/2	19.04/17

`tbabs x mekal`
N_H(×10²² cm⁻²)	0.002 (fixed)	0.13 ± 0.04		0.03 (fixed)	0.005 (fixed)	0.01 (fixed)
kT(keV)	≳14.69	$5 . 62_{- 0.62}^{+ 0.77}$ $5.62^{+0.77}_{-0.62}$		≳1.60	$1 . 04_{- 0.27}^{+ 1.22}$ $1.04^{+1.22}_{-0.27}$	≳18.01
Z(Z_⊙)	1.0 (fixed)	$2 . 61_{- 0.83}^{+ 1.21}$ $2.61^{+1.21}_{-0.83}$		1.0 (fixed)	1.0 (fixed)	1.0 (fixed)
C-stat/dof	5.65/6	247.52/270		1.24/1	4.12/2	19.28/17

Notes. (a) – N_H is fixed at Galactic hydrogen column density; (b) – Color excess E(B − V) from the Bayestar dust map lies outside the reliable distance interval, so we fixed N_H at Galactic hydrogen column density; (c) – New Chandra observation is used in the analysis, which is not presented in CSC2.

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