Spectral evolution of hot hybrid white dwarfs - II. Photometry

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Table 1

Names, spectral types, observed bands, false alarm probabilities, periods, and peak–to–peak amplitudes of the variable objects, as well as the temperatures, radii, and surface ratios of the IR-excess sources.

Name	Spectral Type	Band	log(FAP)	Period [d]	Amplitude [mag]	T_{eff 1} [K]	R₁ [R_⊙]	Surface Ratio₁	T_{eff 2} [K]	Surface Ratio₂
WD 0232+035	DA	TESS	−25834.57	4.231915	0.032	$3710_{- 60}^{+ 70}$ $\[3710_{-60}^{+70}\]$	${0.395}_{- 0.011}^{+ 0.011}$ $\[0.395_{-0.011}^{+0.011}\]$	−	−	−
			−3304.41	1.391210	0.007
		ATLAS-c	−	−	0.029
		ATLAS-o	−12.60	4.229050	0.046
		CSS-V	−9.28	4.368181	0.160
WD 0851+090	DAO	−	−	−	−	$2920_{- 380}^{+ 210}$ $\[2920_{-380}^{+210}\]$	${0.260}_{- 0.040}^{+ 0.040}$ $\[0.260_{-0.040}^{+0.040}\]$	−	−	−
WD 1056+516	DA	ZTF-g	−20.15	0.113279	0.018	−	−	−	−	−
		ZTF-r	−20.81	0.113279	0.020
		ZTF-i^(a)	−	−	0.020
WD 1253+378	DAO	−	−	−	−	$3220_{- 100}^{+ 120}$ $\[3220_{-100}^{+120}\]$	${0.337}_{- 0.020}^{+ 0.022}$ $\[0.337_{-0.020}^{+0.022}\]$	−	−	−
WD 1342+443	DA	ZTF-g	−27.60	1.873020	0.015	$346_{- 17}^{+ 17}$ $\[346_{-17}^{+17}\]$	-	${1.4}_{- 0.5}^{+ 0.5}$ $\[1.4_{-0.5}^{+0.5}\]$ × 10⁵	−	−
		ZTF-r	−10.15	1.873207	0.012
		ZTF-i^(a)	−	−	0.010
WD 2218+706	DA	−	−	−	−	$560_{- 210}^{+ 190}$ $\[560_{-210}^{+190}\]$	−	${1.7}_{- 1.1}^{+ 11.0}$ $\[1.7_{-1.1}^{+11.0}\]$ × 10³	$80_{- 20}^{+ 16}$ $\[80_{-20}^{+16}\]$	$5_{- 4}^{+ 49}$ $\[5_{-4}^{+49}\]$ × 10⁸
WD 2350–706	DA	TESS	−5306.25	1.373420	0.008	$6280_{- 40}^{+ 50}$ $\[6280_{-40}^{+50}\]$	${1.210}_{- 0.070}^{+ 0.070}$ $\[1.210_{-0.070}^{+0.070}\]$	−	−	−

Notes. a. To measure ZTF i-band amplitudes of WD 1056+516 and WD 1342+443, we phased the light curves to a significant period found in the respective ZTF g-band. b. Radii of the IR-excess sources were calculated assuming the same distance as the WD. c. Surface ratios are given relative to the WD.

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