Cataclysmic variables around the period-bounce: An eROSITA-enhanced multiwavelength catalog

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Volume 687 (July 2024)

A&A, 687 (2024) A305

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Table 2

Scores assigned for the different parameters.

	Points
Spectral type
$Spectroscopic {\begin{array}{l} T/L donor \\ M5 or later donor \\ Very late donor \end{array}$ $\hbox{Spectroscopic} \left\{\begin{array}{@{}l@{\quad}ll} \rm T/L donor & 9\\ \rm M5 or later donor & 5 \\ \rm Very late donor & 2\end{array}\right.$	9
	5
	2
$Non-spectroscopic {\begin{array}{l} T/L donor \\ M5 or later donor \\ Very late donor \end{array}$ $\hbox{Non-spectroscopic} \left\{\begin{array}{@{}l@{\quad}ll} \rm T/L donor & 9\\ \rm M5 or later donor & 5 \\ \rm Very late donor & 2\end{array}\right.$	7
	3
	1
Otder	0

Donor mass
M_donor ≤ 0.058 M_⊙	3
0.058 M_⊙ < M_donor ≤ 0.07 M_⊙	1
M_donor > 0.07 M_⊙	0

Orbital period
M_donor ≤ 0.058 M_⊙ For any P_orb	3
$M_{donor} \leq 0.07 M_{⊙} {\begin{array}{c} P_{orb} \approx 80 min \\ P_{orb} > 85 min \\ P_{orb} > 90 min \end{array}$ $\hbox{M_{\rm donor} > 0.07 \,M_{\odot}} \left\{\begin{array}{@{}l@{\quad}ll} P_{\rm orb} \approx 80$\,min & 2\\ P_{\rm orb} \approx 85$\,min & 1 \\ P_{\rm orb} \approx 90$\,min & 0\end{array}\right.$	2
	1
	0
$M_{donor} \leq 0.07 M_{⊙} {\begin{array}{c} P_{orb} \approx 80 min \\ P_{orb} > 85 min \end{array}$ $\hbox{M_{\rm donor} > 0.07 \,M_{\odot}} \left\{\begin{array}{@{}l@{\quad}ll} P_{\rm orb} \approx 80$\,min & 1\\ P_{\rm orb} \approx 85$\,min & 0 \\end{array}\right.$	1
	0
$No mass {\begin{array}{c} P_{orb} \leq 90 min \\ P_{orb} > 90 min \end{array}$ $\hbox{No mass} \left\{\begin{array}{@{}l@{\quad}ll} P_{\rm orb} \approx 90$\,min & 1\\ P_{\rm orb} \approx 90$\,min & 0 \\end{array}\right.$	1
	0

WD temperature
T_eff ≤ 12 500 K	3
12 500 K < T_eff ≤ 14 000 K	1
T_eff ≤ 14 000 K	0

Gaia variability
In WD locus	3
Broad WD locus	2
Around main-sequence	0

SDSS colors
$u - g \leq 0.5 {\begin{array}{c} u - g \geq 1.25 (g - r) - 0.1 \\ u - g \geq 1.25 (g - r) - 0.4 \end{array}$ $\hbox{u-g \leq 0.5} \left\{\begin{array}{@{}l@{\quad}ll} u-g \geq 1.25(g-r)-0.1 & 3\\ u-g \geq 1.25(g-r)-0.4 & 1\\end{array}\right.$	3
	1
Other	0

GALEX colors
FUV-NUV ≥ 1	3
1 > FUV-NUV ≥ 0.25	1
FUV-NUV < 0.25	0

IR Colors
T or L donor	3
M donor	1
Other	0

IR excess
No excess/at K-band or longer	3
At J-band or longer	1
Other	0

Notes. See text for full descriptions of each parameter.

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