2025ApJ...984..112R

Query : 2025ApJ...984..112R

2025ApJ...984..112R - Astrophys. J., 984, 112 (2025/May-2)

Thirty-two New Bright ZZ Ceti Stars from TESS: Adding Cycles 4 and 5.

ROMERO A.D., KEPLER S.O., OLIVEIRA DA ROSA G. and HERMES J.J.

Abstract (from CDS):

Analyzing all 120 s and 20 s light curves obtained by the TESS satellite up to Sector 69-the end of the fifth year of observations-for all known white dwarfs and white dwarf candidates up to G = 17.5 mag, we report the discovery of 32 new pulsating DA white dwarf stars. For all objects, we obtained the period spectra and performed a seismological analysis using full evolutionary models to estimate the structural parameters, such as effective temperature, stellar mass, and hydrogen envelope mass. The median stellar mass for the pulsators from asteroseismology is 0.609 M⊙, in agreement with the median value of photometric and spectroscopic determinations, 0.602 M⊙, excluding the low and extremely low mass objects. Finally, we found rotational-splitting multiplets for nine stars, which led to rotation periods between 4 hr and 1 day.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar oscillations - Surveys - White dwarf stars

Simbad objects: 59

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Number of rows : 59
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 SDSS J010025.56+421840.9 WD* 01 00 25.5200726400 +42 18 41.464093716           DA 12 0
2 DENIS J012624.7-711712 WD* 01 26 24.7314209472 -71 17 11.955285852         16.886 DA 8 0
3 V* ZZ Cet WD* 01 36 13.6153974672 -11 20 32.632874601   14.328 14.16 14.4   DA4.0 307 0
4 DENIS J021328.2-643708 WD* 02 13 28.2725689944 -64 37 08.868379152         16.705 DA 7 0
5 GALEX J023156.0-535752 WD* 02 31 56.0060673744 -53 57 53.179738704           DA 8 0
6 UCAC4 784-007929 WD* 02 40 29.6556766272 +66 36 37.059769296     15.536 15.933   DA 13 0
7 2MASS J03203141-3656571 WD* 03 20 31.4119300152 -36 56 57.628231980   15.9   16.5   DA 11 0
8 US 3864 WD* 03 21 09.0225395280 +14 10 56.375693940   17.6   17.7   DA 11 0
9 TIC 114058447 WD* 03 41 10.5270085560 +19 08 00.400274808           DA 9 0
10 G 80-34 WD* 03 54 54.2004256944 +07 46 08.592985740   17.0   16.4   DA3.1 32 0
11 2MASS J04053637-7628280 WD* 04 05 36.3869978520 -76 28 28.079596524           DA 7 0
12 * omi02 Eri B WD* 04 15 21.7957181469 -07 39 29.203986789 9.147 9.83 9.53     DA2.9 357 0
13 HL Tau 76 WD* 04 18 56.6378191680 +27 17 48.314513652   15.40       DA4.3 154 0
14 UCAC4 695-029797 WD* 04 33 50.9895631464 +48 50 39.179629932   16.002 15.869 15.569   DA 11 0
15 PSO J070.7431+32.6208 WD* 04 42 58.3142031912 +32 37 15.625640568           DA 8 0
16 GALEX J045527.1-625844 WD* 04 55 27.2722806696 -62 58 44.614631460           DA 14 0
17 EC 06220-8010 WD* 06 18 13.0786558128 -80 11 55.219502885 14.35 14.96 14.74   14.87 DA 17 0
18 UCAC4 532-039783 WD* 07 23 00.2196728352 +16 17 03.976491516   15.21 15.01 15.34   DA 15 0
19 TIC 762000503 WD* 07 27 08.0379958800 +14 52 16.489407072           DA 6 0
20 GALEX J073145.1+235353 WD* 07 31 45.0995591256 +23 53 53.568235140           DA 16 0
21 TIC 775564285 WD* 07 46 13.8125919576 -30 25 50.932695648           DA 11 0
22 GALEX J075141.5+112029 WD* 07 51 41.5245150960 +11 20 30.306731244           DA 16 0
23 GALEX J080856.6+461302 WD* 08 08 56.7885059688 +46 13 00.084334764           DA 7 0
24 TIC 409732714 WD* 08 24 03.3486573624 -12 19 43.655916000           DA 9 0
25 SDSS J084055.72+130329.5 WD* 08 40 55.7166661296 +13 03 29.577683484           DA 9 0
26 SDSS J085128.17+060551.1 WD* 08 51 28.1620189248 +06 05 51.267830388           DA 17 0
27 DENIS J085457.5-764622 WD* 08 54 57.5121110400 -76 46 21.937232316         16.940 DB 10 0
28 UCAC4 109-021505 WD* 09 22 56.2386623232 -68 16 48.795938328   16.022 15.681 16.146   DA 10 0
29 GALEX J095006.9+183733 WD* 09 50 06.9470241384 +18 37 33.901331988           DA 10 0
30 GALEX J102132.7+140124 WD* 10 21 32.7772004568 +14 01 24.276214200           DA 8 0
31 GALEX J102300.5+240705 WD* 10 23 00.5151903000 +24 07 04.684072404   16.3   16.3   DA 12 0
32 GALEX J102312.8+672507 WD* 10 23 12.6533973720 +67 25 06.546029628           DA 11 0
33 SDSS J110121.94+401546.1 WD* 11 01 21.9498603936 +40 15 46.369570932           DA 10 0
34 TIC 81848974 WD* 11 12 21.4283063112 -51 30 03.903212412           DA 10 0
35 GALEX J113738.6+801600 WD* 11 37 38.3809720344 +80 16 00.123320172   16.3   16.9   DA 9 0
36 GALEX J114319.1-080115 WD* 11 43 19.1039468928 -08 01 15.405225096           DA 6 0
37 PG 1158+433 WD* 12 01 09.5128890336 +42 59 47.417505612           DA3.4 27 0
38 TIC 461203226 WD* 12 06 50.8944985728 -38 05 49.227395856           DA 14 0
39 TIC 30545382 WD* 13 16 30.8221527912 -39 24 04.844595312           DA 6 0
40 EC 13266-2336 WD* 13 29 24.8118738408 -23 52 16.754081808   16.07 15.97 15.9   DA3.6 23 0
41 G 63-57 WD* 13 49 03.7004612136 +14 19 55.668208080   16.88   16.4   DA 16 0
42 SBSS 1452+600 WD* 14 53 23.5188281856 +59 50 56.244302160   17.5       DA 19 0
43 SBSS 1526+558 WD* 15 28 09.2719414104 +55 39 14.491956744           DA4.5 17 0
44 GALEX J153332.9-020655 WD* 15 33 32.9656612536 -02 06 55.726221204           DA 29 0
45 2MASS J17432429-2820026 WD* 17 43 24.29449 -28 20 02.6446           ~ 1 0
46 UCAC4 078-044501 WD* 17 43 44.0039353944 -74 24 37.533820896   16.02 15.84   15.79 DA 14 0
47 UCAC4 255-127240 WD* 17 43 49.2762549840 -39 08 25.953844272   14.70 13.72 13.74   DA 17 0
48 GALEX J181222.7+432108 WD* 18 12 22.7457665472 +43 21 07.269702336           DA 20 0
49 UCAC4 693-061894 WD* 18 26 06.0358876728 +48 29 11.293539684       15.955   DA 11 0
50 2MASS J18433547+2740268 * 18 43 35.4542700792 +27 40 26.825288448           ~ 2 0
51 GD 532 WD* 19 03 19.5639940824 +60 35 52.650601872       15.214   DA 20 0
52 TIC 1860439362 WD* 19 21 54.5907496800 +27 14 37.481820288           DA 6 0
53 HS 1936+6902 WD* 19 38 19.5807052752 +69 09 11.382174000   16.2   16.5   DA 7 0
54 GALEX J203750.6+061228 WD* 20 37 50.5994247048 +06 12 27.671731020           DA 9 0
55 TIC 1944049427 WD* 20 38 04.2850647024 +23 40 59.971238976           DA 6 0
56 EC 21147-5326 WD* 21 18 15.5200537032 -53 13 22.718989812 15.49 16.017 15.871 15.837   DA 14 0
57 PHL 5207 WD* 22 28 58.1536080048 -31 05 53.717546328   15.77 15.57 15.86 15.56 DA 13 0
58 EC 23183-8329 WD* 23 22 31.9066791672 -83 13 13.266794316 16.16 16.63 16.41     DA 12 0
59 PSO J356.2807+58.2208 WD* 23 45 07.3315092552 +58 13 15.071414232           DAV 13 0

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