2022MNRAS.516..720K

Query : 2022MNRAS.516..720K

2022MNRAS.516..720K - Mon. Not. R. Astron. Soc., 516, 720-730 (2022/October-2)

Four new deeply eclipsing white dwarfs in Zwicky Transient Facility.

KOSAKOWSKI A., KILIC M., BROWN W.R., BERGERON P. and KUPFER T.

Abstract (from CDS):

We present the results of a search for deeply eclipsing white dwarfs in the Zwicky Transient Facility (ZTF) Data Release 4 (DR4). We identify nine deeply eclipsing white dwarf candidates, four of which we followed up with high-cadence photometry and spectroscopy. Three of these systems show total eclipses in the ZTF data and our follow-up Apache Point Observatory 3.5 m telescope observations. Even though the eclipse duration is consistent with sub-stellar companions, our analysis shows that all four systems contain a white dwarf with low-mass stellar companions of ∼0.1 M⊙. We provide mass and radius constraints for both stars in each system based on our photometric and spectroscopic fitting. Finally, we present a list of 41 additional eclipsing WD+M candidates identified in a preliminary search of ZTF DR7, including 12 previously studied systems. We identify two new candidate short-period, eclipsing, white dwarf-brown dwarf binaries within our sample of 41 WD+M candidates based on Pan-STARRS colours.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): binaries: eclipsing - brown dwarfs - stars: low-mass - white dwarfs

Simbad objects: 51

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Number of rows : 51
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 Gaia DR3 2857103195527412992 * 00 22 34.4651001620 +28 20 43.565702206           ~ 1 0
2 Gaia DR3 380585951271107968 WD? 00 33 35.3525412984 +39 17 06.600620796           ~ 4 0
3 Gaia DR3 380560941677424768 WD? 00 33 52.6360844760 +38 55 29.693830296           ~ 7 0
4 Gaia DR3 2858607774110350976 * 00 37 32.2856940362 +30 35 18.492244901           ~ 1 0
5 GALEX J003854.9+203026 WD* 00 38 54.9990799152 +20 30 26.150348736           DA 18 0
6 Gaia DR3 364169452395186304 * 00 50 20.3775600807 +36 22 49.039712911           ~ 1 0
7 GALEX J011009.1+132617 ** 01 10 09.0943093512 +13 26 16.376271612           DA+dMe 37 0
8 Gaia DR3 320209019011329408 WD? 01 18 24.5079943301 +34 45 04.338587410           ~ 2 0
9 ZTF J021919.78+462345.1 CV* 02 19 19.7876492712 +46 23 44.970146664           ~ 3 0
10 Gaia DR3 114286056089620096 PM* 02 48 53.2089058440 +24 50 33.080193348           ~ 2 0
11 LAMOST J042955.26+344734.3 WD* 04 29 55.2949197072 +34 47 34.679472072           DA 4 0
12 Gaia DR3 502209190190665856 * 05 06 33.6337100667 +73 06 46.908638165           ~ 1 0
13 ZTF J064242.41+131427.6 EB* 06 42 42.3983051787 +13 14 27.852091016           ~ 3 0
14 GALEX J082011.1+584234 ** 08 20 11.2052197872 +58 42 35.210709684           DA+M 6 0
15 SDSS J083845.86+191416.5 WD* 08 38 45.8652727872 +19 14 16.782202932           DA+M 23 0
16 GALEX J090812.1+060420 WD* 09 08 12.0406036752 +06 04 21.232540416     17.15     DA+M 30 0
17 GALEX J093948.0+325808 WD* 09 39 47.9713906824 +32 58 07.321743084           DA+M 21 0
18 2QZ J103448.9+005200 WD* 10 34 48.9329384976 +00 52 01.371664956   19.23 19.2     DA3.0 35 0
19 GALEX J110045.1+521044 WD* 11 00 45.1599478464 +52 10 43.782733128           DA 12 0
20 SDSS J110805.35+652211.5 WD* 11 08 05.3680249056 +65 22 11.449499844           DA+dMe 18 0
21 LBQS 1145+0145 WD* 11 48 33.6297189672 +01 28 59.420446860           DB 216 0
22 2QZ J120515.8-024223 WD* 12 05 15.8129733888 -02 42 22.754968128   18.42       DA 41 0
23 GALEX J123902.8+654934 WD* 12 39 02.9204925648 +65 49 34.625855784           DA+M 17 0
24 SDSS J140847.13+295045.0 CV* 14 08 47.1367930176 +29 50 45.018376656           DA+M 15 0
25 SDSS J141126.20+200911.1 ** 14 11 26.2220815704 +20 09 11.039979600           DA+? 49 0
26 SDSS J141220.70+654123.3 WD* 14 12 20.6971383768 +65 41 23.293536432           DA+M 15 0
27 SDSS J142953.46+522353.5 ** 14 29 53.4707690784 +52 23 53.238434532           DA+M 5 0
28 SDSS J143547.87+373338.5 WD* 14 35 47.8735199952 +37 33 38.699663868           DA+M4.5 45 0
29 GALEX J154846.0+405728 WD* 15 48 46.0071409320 +40 57 28.797200712           DA+M6 34 0
30 Gaia DR3 1702389319463842560 WD* 16 02 34.2822294599 +72 52 08.465647811           DA 2 0
31 GALEX J164441.2+243428 WD* 16 44 41.1830672688 +24 34 28.523934804           DA 8 0
32 Gaia DR3 1414195708232098688 * 17 13 36.4164970505 +49 07 38.607779128           ~ 1 0
33 ZTF J172400.04+604451.8 WD? 17 24 00.0494853024 +60 44 51.814285188           ~ 4 0
34 Gaia DR3 4490536776397581312 * 17 25 23.9969673477 +08 46 39.484248447           ~ 1 0
35 Gaia DR3 1633921248638338688 * 17 31 28.7186598115 +66 38 11.386171660           ~ 1 0
36 GALEX J174424.7+390215 WD* 17 44 24.7102772496 +39 02 16.229877036           DA 4 0
37 ZTF J182848.77+230838.0 WD* 18 28 48.7736007768 +23 08 38.385669372           DA 8 0
38 GALEX J184434.4+485737 WD* 18 44 34.4100221592 +48 57 36.311459112           DA 4 0
39 LP 141-14 WD* 18 57 39.3436703328 +53 30 33.301040904   17.6   16.4   DC 82 0
40 Gaia DR3 4198059364790247680 * 19 16 01.4312622914 -12 34 11.182461692           ~ 1 0
41 ZTF J192014.13+272218.1 EB* 19 20 14.1164858496 +27 22 18.287327784           ~ 4 0
42 Gaia DR3 2045226627079102848 WD* 19 36 07.5886706880 +31 55 06.838369644           DA 3 0
43 GALEX J193619.9+540921 WD* 19 36 19.9358765616 +54 09 21.159619380           DA 5 0
44 Gaia DR3 2238908319023604352 * 19 42 17.5045933874 +59 39 45.804068422           ~ 1 0
45 Gaia DR3 1836736545022514560 WD* 20 06 41.3382773592 +27 28 50.500521408           DA 3 0
46 Gaia DR3 1805534569689099392 * 20 29 29.2725322300 +15 21 03.420625443           ~ 1 0
47 Gaia DR3 1859639715829026432 * 20 49 48.5503761244 +31 11 52.267931790           ~ 1 0
48 GALEX J215037.0+234000 EB* 21 50 37.0152903792 +23 40 00.051059532           ~ 5 0
49 ZTF J221226.96+534750.7 WD* 22 12 26.8006488624 +53 47 49.990597836           DA 5 0
50 Gaia DR3 2014898802148215424 * 23 08 28.5914699546 +61 25 37.383156356           ~ 1 0
51 SDSS J234143.85+452431.5 ** 23 41 43.8516774216 +45 24 31.506461424           DA+M 9 0

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