2024ApJ...967..166S

Query : 2024ApJ...967..166S

2024ApJ...967..166S - Astrophys. J., 967, 166 (2024/June-1)

Measuring White Dwarf Variability from Sparsely Sampled Gaia DR3 Multi-epoch Photometry.

STEEN M., HERMES J.J., GUIDRY J.A., PAIVA A., FARIHI J., HEINTZ T.M., EWING B.B. and BERRY N.

Abstract (from CDS):

White dwarf stars are ubiquitous in the Galaxy, and are essential to understanding stellar evolution. While most white dwarfs are photometrically stable and reliable flux standards, some can be highly variable, which can reveal unique details about the endpoints of low-mass stellar evolution. In this study, we characterize a sample of high-confidence white dwarfs with multi-epoch photometry from Gaia Data Release 3. We compare these Gaia light curves with light curves from the Zwicky Transiting Facility and the Transiting Exoplanet Survey Satellite to see when Gaia data independently can accurately measure periods of variability. From this sample, 105 objects have variability periods measured from the Gaia light curves independently, with periods as long as roughly 9.5 days and as short as 256.2 s (roughly 4 minutes), including seven systems with periods shorter than 1000 s. We discover 86 new objects from the 105 target samples, including pulsating, spotted, and binary white dwarfs, and even a new 68.4 minute eclipsing cataclysmic variable. The median amplitude of the absolute photometric variability we confirm from Gaia independently is 1.4%, demonstrating that Gaia epoch photometry is capable of measuring short-term periods even when observations are sparse.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): White dwarf stars - Periodic variable stars - Light curves

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 110

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Number of rows : 110
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GALEX J003213.1+160434 WD* 00 32 13.1329558536 +16 04 34.779828684           DO 8 0
2 Gaia DR3 380560941677424768 WD? 00 33 52.6360844760 +38 55 29.693830296           ~ 7 0
3 MCT 0032-3146 WD* 00 34 49.8573032832 -31 29 52.685847348   16.6 15.62 16.1   DA1 18 0
4 LP 705-64 WD* 00 35 12.8806588320 -12 25 08.846069448           D 17 0
5 Gaia DR3 414813439007636352 WD* 00 45 02.3450969232 +50 34 08.455432620           DA 4 0
6 UVEX J011053.07+604830.9 WD* 01 10 53.0607923664 +60 48 31.029433956 16.131         DAe 6 0
7 Gaia DR3 313206676129937408 WD* 01 11 57.1204699272 +31 36 32.665802328           DA: 8 0
8 FBS 0125+386 WD* 01 28 28.9866047880 +38 54 36.623786832     15.0     DA 22 0
9 PHL 1016 WD* 01 31 48.0173305680 -05 59 00.142910376           DA 5 0
10 G 272-60 WD* 01 38 32.0153298504 -19 54 46.581303312   16.3       DA6 24 0
11 GALEX J020322.9+255852 WD* 02 03 22.9433186016 +25 58 51.895734384           DA 6 0
12 Gaia DR3 505182712013216000 WD? 02 04 26.0261088789 +57 10 26.617367533           ~ 2 0
13 UCAC4 747-022474 WD* 02 27 04.2392840784 +59 15 02.036973672   16.36 15.97 16.23   DA 13 0
14 UCAC4 040-001194 WD* 02 42 35.5235206032 -82 06 36.318668868   16.59 16.44     DA 11 0
15 GALEX J031047.6-100155 WD? 03 10 47.5647078360 -10 01 53.876962488           ~ 4 0
16 V* EF Eri CV* 03 14 13.2526234800 -22 35 42.900077688   15.4 14.53 13.5   DA 453 0
17 V* CL Oct WD* 03 17 15.8468594712 -85 32 25.558244556   13.78 13.66 15.19   DAP 180 1
18 GALEX J032205.0-472105 WD* 03 22 05.0994640896 -47 21 06.455742264           DA 4 0
19 GALEX J032803.0+265151 WD? 03 28 03.0211934448 +26 51 51.646205232           ~ 4 0
20 GALEX J032902.6+390341 WD? 03 29 02.6341208784 +39 03 40.881276216           ~ 5 0
21 GALEX J035814.4-213813 WD* 03 58 14.5162406760 -21 38 13.742512368           DA: 5 0
22 GALEX J041033.2-585203 WD* 04 10 33.3712388352 -58 52 03.625498056           DA 4 0
23 UCAC4 830-006897 WD* 04 12 46.8458233992 +75 49 42.261734064   15.90 15.73 15.56   DAe 21 0
24 Gaia DR3 3204352783173513728 WD? 04 31 03.7459846752 -04 17 02.627090232           ~ 6 0
25 Gaia DR3 3230486971974872192 WD* 04 38 32.7431372928 +00 31 17.017518396           DA 4 0
26 GALEX J050433.0-213008 WD? 05 04 33.0127027872 -21 30 07.927989228           ~ 3 0
27 LAMOST J052026.34+381240.2 WD* 05 20 26.3548104528 +38 12 40.870048752   15.32 15.39 15.45   DAB 13 0
28 GALEX J053432.8+770756 WD* 05 34 32.9343280800 +77 07 57.399353076           D 12 0
29 ATO J084.1336+12.5246 WD* 05 36 32.0701529832 +12 31 28.646304816           DA 7 0
30 GALEX J061234.2-191111 WD* 06 12 34.2552442176 -19 11 11.740274304           DA 5 0
31 Gaia DR3 5549322119820590208 WD* 06 18 15.2673732480 -51 23 05.523398952           DA 7 0
32 Gaia DR3 2951380789991336192 WD* 06 25 55.0448511000 -14 14 42.310477500           DA 11 0
33 Lan 14 WD* 06 43 16.0144306536 +01 30 12.780542196   15.64 15.83 16.13   DO 21 0
34 Gaia DR3 5575611644702244992 WD* 06 47 53.5703024376 -40 37 56.161055208           DO: 4 0
35 GALEX J064802.3-634629 WD* 06 48 02.2705634064 -63 46 29.894396196           DA 4 0
36 FBS 0702+616 WD* 07 06 47.5203052512 +61 33 50.314629348   13.045 13.509 13.893   DA 9 0
37 V* HR Cam WD* 07 17 09.7856917536 +74 00 40.535184924   14.91 14.97     DA2.6 76 0
38 GALEX J072146.7+564408 WD? 07 21 46.7434401216 +56 44 08.404083240           ~ 5 0
39 Gaia DR3 3161618477052648192 WD* 07 27 58.8683772288 +10 11 57.082845552           D 9 0
40 HS 0727+6003 WD* 07 31 21.3884393040 +59 57 37.008257112   15.8 16.15     DO 18 0
41 Gaia DR3 5615892360564187008 WD? 07 43 16.0444160736 -22 46 56.867674620           ~ 5 0
42 GALEX J082924.7-163337 WD* 08 29 24.7684646448 -16 33 37.244958840           DA 7 0
43 GALEX J083531.1+533230 WD* 08 35 31.1710000512 +53 32 30.910972272           DC 19 0
44 RX J0838.7-2827 CV* 08 38 43.3520551272 -28 27 01.143230076           ~ 23 0
45 GALEX J085746.2+034255 RS* 08 57 46.1848948032 +03 42 55.352826180           DA+M 35 0
46 Gaia DR3 5620763437599189376 WD* 09 02 12.8925081432 -39 45 53.316599148           DAH 13 0
47 Gaia DR3 5216924803961432192 WD* 09 02 40.7809928448 -74 23 31.370147340           DA 4 0
48 SDSS J091748.20+001041.6 WD* 09 17 48.2047913232 +00 10 41.728420560           DA 6 0
49 GALEX J093611.1-340058 WD* 09 36 11.1188827464 -34 00 59.164561116           DA 5 0
50 CRTS J095017.9-251125 ** 09 50 17.9730391584 -25 11 24.786728772   15.52 15.67     sdA+ELMD 8 0
51 PG 0948+534 PN 09 51 25.9386749256 +53 09 30.722690664   14.955 15.315 15.200   DA.4 52 0
52 Gaia DR3 5666080664027302784 WD* 10 06 43.7426598879 -22 17 57.858353215           DA: 3 0
53 LB 567 WD* 10 06 45.7552585320 +00 32 04.478200116   16.76 16.76     DA 17 0
54 GALEX J105228.9-295308 WD* 10 52 28.9377738936 -29 53 08.200414860           DO 4 0
55 GALEX J110317.9-401545 WD? 11 03 18.0031513704 -40 15 44.496116280           ~ 3 0
56 UCAC4 250-050231 WD* 11 23 55.2105745296 -40 06 14.631661800   14.61 14.96 15.35 15.29 DA: 5 0
57 GALEX J113832.6-435817 WD* 11 38 32.7864272688 -43 58 17.727110760           DA 4 0
58 LP 673-41 WD* 11 50 33.3453942275 -06 36 18.071945344     16.529 16.310   DA 16 0
59 TIC 461203226 WD* 12 06 50.8944985728 -38 05 49.227395856           DA 14 0
60 Gaia DR3 6076202559948311040 WD? 12 16 22.6112722800 -54 59 07.299732120           ~ 4 0
61 ZTF J1239+8347 WD? 12 39 55.3822095984 +83 47 07.519111944           ~ 4 0
62 Ton 644 WD* 12 47 40.0955173968 +30 30 07.405495884           DA 21 0
63 GALEX J125005.1-203632 WD* 12 50 05.1127891104 -20 36 32.289365556           DO 4 0
64 GALEX J125230.9-023417 WD* 12 52 30.9339922128 -02 34 17.721943032   16.9   17.3   DC 24 0
65 CRTS J130017.9-325805 CV? 13 00 17.8589496528 -32 58 05.253956904           ~ 5 0
66 GALEX J130905.4-470852 WD* 13 09 05.4274356000 -47 08 52.388183328           DA 5 0
67 SDSS J132518.18+233808.0 WD* 13 25 18.1820851920 +23 38 08.025925020           DA 8 0
68 GALEX J135523.9+085645 WD* 13 55 23.9224506600 +08 56 45.409938900           DA 16 1
69 Gaia DR3 1671880139535534208 WD? 14 03 30.8932153704 +67 12 55.160828604           ~ 3 0
70 CBS 389 WD* 14 40 07.5988535520 +31 54 13.019943132   17.16   17.45 18.20 DO 6 0
71 GALEX J144410.0-214338 WD* 14 44 10.0788594024 -21 43 38.314475220           DA: 6 0
72 Gaia DR3 5773385817714683776 WD* 14 56 23.3029074600 -79 36 54.986123664           DA 5 0
73 Gaia DR3 5873013322220969984 WD* 14 58 17.9068594042 -65 10 24.937476932           DA: 3 0
74 V* OV Boo CV* 15 07 22.3698571080 +52 30 39.804859764   18.7   18.5   DAe 82 0
75 FBS 1552+879 WD* 15 30 28.8209833128 +87 48 48.473501328           DA: 9 0
76 Ton 243 ** 15 39 38.1155400888 +27 06 05.841852624   16.3       DA+M 22 0
77 Gaia DR3 6008982469163902464 WD* 15 40 08.2805458992 -39 29 17.608363152           DA: 13 0
78 GALEX J154012.1+290828 ** 15 40 12.0733344456 +29 08 28.957050024           DA+M: 11 1
79 ZTF J154801.31+623611.9 WD* 15 48 01.3658713440 +62 36 11.563343496           DB 8 0
80 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 526 0
81 UCAC4 400-066378 WD* 16 53 35.2055798208 -10 01 16.331345688   16.09 15.69 14.02   DAe 15 0
82 GALEX J181824.3+465721 WD* 18 18 24.3496294368 +46 57 21.450393036           DA 5 0
83 GALEX J183243.4+354518 WD* 18 32 43.4489917872 +35 45 18.418988844           DA 7 0
84 GALEX J184506.3+505412 WD* 18 45 06.3093033696 +50 54 12.147620220           DA 7 0
85 ZTF J185924.75+330157.4 WD* 18 59 24.8498221320 +33 01 57.527273424           D 11 1
86 KIC 8490027 CV* 19 19 31.0885100040 +44 32 43.873085112     16.7     DA 7 0
87 V* PT Vul WD* 19 52 27.8765406336 +25 09 29.175649632   15.13   15.1   DA4.2 74 0
88 LAWD 79 WD* 19 56 29.2263375910 -01 02 32.671070269   13.89 13.56 13.73   DA6.4 158 0
89 GALEX J195952.9+143534 WD* 19 59 52.9412290824 +14 35 34.167077628           DO 4 0
90 Gaia DR3 1809460380271929344 WD* 20 09 37.0221298752 +16 52 19.120744992           DA 4 0
91 Gaia DR3 2061416695278519808 WD* 20 20 34.5654916704 +39 22 12.120093948           DA 5 0
92 CRTS J202354.9-433512 WD? 20 23 54.8954100288 -43 35 13.669888704           ~ 4 0
93 Gaia DR3 2056368017063855360 WD* 20 28 11.6397108192 +35 05 25.079684604           DA: 4 0
94 Gaia DR3 1863757043284422784 WD? 20 28 41.3760938736 +32 58 37.346407176           ~ 3 0
95 HS 2027+0651 WD* 20 29 32.5058738256 +07 01 07.699206000   16.1   16.9   DO 20 0
96 GALEX J210110.1-052750 WD* 21 01 10.1706961344 -05 27 51.145177824   14.687 14.834 14.942   DAO 9 0
97 Gaia DR3 2177297391130977792 WD* 21 08 40.5272251704 +55 45 02.630073672           DA: 4 0
98 Gaia DR3 1867851869401000960 WD* 21 15 57.5827204608 +36 42 55.404010404           DA: 4 0
99 GALEX J213119.9+345246 WD* 21 31 19.9304654736 +34 52 46.836505272           DB: 4 0
100 CRTS J213958.2-074125 WD* 21 39 58.2920682672 -07 41 26.175675480     16.71     DA 8 0
101 Gaia DR3 2216598403463898112 WD? 21 54 32.2619434968 +63 41 54.109832640           ~ 4 0
102 EC 21548-5908 WD* 21 58 23.8817713392 -58 53 53.812527468 15.38 15.90 15.75     DA 16 0
103 GALEX J221452.6-314334 WD* 22 14 52.5629107128 -31 43 33.976802928           DA 9 0
104 Gaia DR3 2000785539622175104 WD* 22 15 45.1470522336 +50 37 59.454242796           DB: 4 0
105 GALEX J224539.3+201633 WD* 22 45 39.2957020776 +20 16 33.348696312           DA 8 0
106 PB 7199 WD* 22 46 53.7255013104 -09 48 34.485278400   16       DA 18 0
107 Ton S 77 WD* 22 52 06.3859624200 -27 40 12.560324520   17.5 17.7     DO 6 0
108 PB 7446 WD* 23 00 47.0634568272 -12 50 54.978291600   16.5       DB/cont? 7 0
109 Gaia DR3 2210180554096762624 WD* 23 24 11.1555465216 +65 30 53.046549576           DB: 6 0
110 Gaia DR3 6523373973310305664 WD* 23 39 23.7920542656 -48 53 50.188032672           DA 4 0

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