2024MNRAS.528.6056H

Query : 2024MNRAS.528.6056H

2024MNRAS.528.6056H - Mon. Not. R. Astron. Soc., 528, 6056-6074 (2024/March-2)

Rotation plays a role in the generation of magnetic fields in single white dwarfs.

HERNANDEZ M.S., SCHREIBER M.R., LANDSTREET J.D., BAGNULO S., PARSONS S.G., CHAVARRIA M., TOLOZA O. and BELL K.J.

Abstract (from CDS):

Recent surveys of close white dwarf binaries as well as single white dwarfs have provided evidence for the late appearance of magnetic fields in white dwarfs, and a possible generation mechanism, a crystallization and rotation-driven dynamo has been suggested. A key prediction of this dynamo is that magnetic white dwarfs rotate, at least on average, faster than their non-magnetic counterparts and/or that the magnetic field strength increases with rotation. Here we present rotation periods of ten white dwarfs within 40 pc measured using photometric variations. Eight of the light curves come from TESS observations and are thus not biased towards short periods, in contrast to most period estimates that have been reported previously in the literature. These TESS spin periods are indeed systematically shorter than those of non-magnetic white dwarfs. This means that the crystallization and rotation-driven dynamo could be responsible for a fraction of the magnetic fields in white dwarfs. However, the full sample of magnetic white dwarfs also contains slowly rotating strongly magnetic white dwarfs which indicates that another mechanism that leads to the late appearance of magnetic white dwarfs might be at work, either in addition to or instead of the dynamo. The fast-spinning and massive magnetic white dwarfs that appear in the literature form a small fraction of magnetic white dwarfs, and probably result from a channel related to white dwarf mergers.

Journal keyword(s): magnetic fields - stars: rotation - starspots - white dwarfs

Simbad objects: 137

Full paper

View the references in ADS

Number of rows : 137

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	LAWD 96	WD*	00 02 10.7241976499	-43 09 55.390578662		13.12	13.05			DAP5.8	134	0
2	PHL 657	WD*	00 05 55.9014766896	-10 02 13.547845320		18.2	18.3			DQ	28	0
3	LP 464-57	WD*	00 07 20.5491513439	+12 30 21.160516000		16.8		15.9		DC	27	0
4	EGGR 381	WD*	00 12 14.7449947981	+50 25 20.736275736		14.6		14.2		DA7.6	106	0
5	L 50-73	WD*	00 13 49.8915895301	-71 49 54.255953974						DA8.0	32	0
6	G 158-45	WD*	00 14 12.7919361867	-13 11 01.087005764		16.48	15.88			DC8H	65	0
7	G 267-67	WD*	00 18 30.3640110024	-35 01 44.704162668		16.0				DAH	14	0
8	LP 705-64	WD*	00 35 12.8806588320	-12 25 08.846069448						D	17	0
9	Feige 7	WD*	00 43 45.9806246832	-10 00 25.016051736		14.49				DBAP3	114	0
10	PHL 862	WD*	00 51 24.2754891168	+03 39 04.074890040		17.7	17.9	18.0		DA	17	0
11	PHL 886	WD*	00 54 18.2171588424	+12 02 00.566784564		15.8	16.3	16.1		DAH	12	0
12	GALEX J010637.0+014503	WD*	01 06 37.0246284648	+01 45 03.041691084		16.1		16.5		DA	20	0
13	LSPM J0107+2650	WD*	01 07 28.6153000416	+26 50 21.295268052		19.6		18.5		DZ	15	0
14	GALEX J011123.8+000935	**	01 11 23.9144080176	+00 09 34.493125068						DA+M	24	0
15	EGGR 409	WD*	01 14 37.6538960064	+10 41 04.757053956		15.27	15.41	15.69		DB2.5	75	0
16	LP 991-16	WD*	01 24 03.9865613559	-42 40 38.426729027			14.83	14.52	14.19	DA7H	38	0
17	PG 0122+200	WD*	01 25 22.5121704552	+20 17 56.963079924		16.2		16.9		DOZ.7	117	0
18	ZTF J012943.55+671530.3	RS*	01 29 43.4883404520	+67 15 30.020980464		15.936	14.713	14.554		K7V	12	0
19	V* ZZ Cet	WD*	01 36 13.6153974672	-11 20 32.632874601		14.328	14.16	14.4		DA4.0	307	0
20	GALEX J014240.1-171412	WD*	01 42 40.0893761448	-17 14 10.853208132						DAH	8	0
21	LP 830-14	WD*	02 35 21.7949399589	-24 00 47.123038900		16.4				DC	41	0
22	EGGR 314	WD*	02 36 19.5654664752	+52 44 12.406476804		14.5		14.3		DA2.8	53	0
23	SCR J0252-7522	WD*	02 52 45.6141924650	-75 22 44.558714806			16.70	16.39	16.08	DC	16	0
24	KPD 0253+5052	WD*	02 57 22.0342360368	+51 03 43.484347872	14.26	15.18	15.22	15.60		DAH	42	0
25	V* CC Cet	CV*	03 10 54.9907539360	+09 49 25.681183680						DA2+dM	56	0
26	V* CL Oct	WD*	03 17 15.8468594712	-85 32 25.558244556		13.78	13.66	15.19		DAP	180	1
27	EGGR 566	WD*	03 25 11.0474878302	-01 49 15.047041848		16.8	16.22			DZA9	89	0
28	SCR J0355-5611	WD*	03 55 31.8851808096	-56 11 28.309704036		17.37		16.47	16.11	DAH	11	0
29	SDSS J035824.23+132430.7	WD*	03 58 24.2227252368	+13 24 31.034752164						DA	13	0
30	HL Tau 76	WD*	04 18 56.6378191680	+27 17 48.314513652		15.40				DA4.3	154	0
31	SDSS J041926.91-011333.4	WD*	04 19 26.9055090312	-01 13 33.281448996						D	11	0
32	GALEX J042021.3-293426	WD*	04 20 21.3347575104	-29 34 26.264032752						DAH	12	0
33	LP 777-1	WD*	05 05 52.4599051681	-17 22 43.482694273		16.71	15.97			DAH9	59	0
34	HS 0507+0434A	WD*	05 10 13.9441357968	+04 38 38.436217584		14.14	14.22	14.46		DA4.1	41	0
35	EGGR 248	WD*	05 51 19.4818569216	-00 10 21.107152956		15.06	14.60			DQ8P	165	0
36	EGGR 290	WD*	05 56 25.4599888487	+05 21 48.443176471		14.77	14.13	14.00		DA8P	163	0
37	GD 77	WD*	06 41 12.8216879232	+47 44 19.650545124		14.93		14.9		DAP3.4	62	0
38	SCR J0708-6706	WD*	07 08 52.2811191720	-67 06 31.425046740		17.03		15.82	15.26	DC	26	0
39	SDSS J073227.97+662309.9	WD*	07 32 27.9698454504	+66 23 10.178366280						D	12	0
40	GALEX J075224.3+472423	WD*	07 52 24.1653451320	+47 24 22.435974972						DC	14	0
41	WT 229	WD*	07 53 28.4714347056	-51 14 36.981380148		14.0				DAH	13	0
42	GD 454	WD*	07 54 29.3493514584	+66 11 06.640644444		16.5		16.4		DC	16	0
43	EGGR 428	WD*	07 59 59.5807976955	+43 35 21.102152499		16.39		16.0		DAH	51	0
44	UPM J0812-3529	WD*	08 12 27.0660034296	-35 29 43.324074096		14.97	14.47	14.43		DAH	21	0
45	SCR J0818-3110	WD*	08 18 40.2607671929	-31 10 20.327207159		16.1		15.1	14.9	DZ	37	0
46	GALEX J083204.0+142943	WD*	08 32 03.9841213848	+14 29 42.471775716						DA	15	0
47	GALEX J083702.2+185613	WD*	08 37 02.1679561368	+18 56 13.487529660						DA	19	0
48	GALEX J084027.8+132010	WD*	08 40 27.8451427344	+13 20 10.105829196						DA	10	0
49	LP 425-348	WD*	08 40 54.0377862253	+14 57 10.440198020				18.7		DA	20	0
50	LB 9074	WD*	09 00 41.0906337360	+19 07 14.459719476		17.2		17.6		DA	21	0
51	Gaia DR3 5620763437599189376	WD*	09 02 12.8925081432	-39 45 53.316599148						DAH	13	0
52	EGGR 250	WD*	09 15 56.0774298887	+53 25 23.857612513		14.09		14.1		DCP7	157	0
53	PM J09181-4437	WD*	09 18 08.5932021848	-44 37 24.250448856		17.3		16.8	16.5	DAH	11	0
54	UCAC4 217-039132	WD*	09 42 40.2345879912	-46 37 17.686292052				15.68		DAH	13	0
55	PG 0945+246	**	09 48 46.6405381296	+24 21 25.877233728		14.14	14.25	14.50	14.47	DA+DXP	69	0
56	UCAC4 328-061594	WD*	10 10 47.9144545056	-24 27 10.927726560		15.17	15.20	15.49		DC	17	0
57	LP 315-42	WD*	10 11 41.5774767696	+28 45 59.070596780		18.85		16.1		DQ	53	0
58	WT 1759	WD*	10 12 01.8720031423	-18 43 33.272144578			15.446	15.55	14.92	DZ7	45	1
59	ATO J153.0150-18.7233	EB?	10 12 03.61	-18 43 24.0						~	2	0
60	PG 1015+014	**	10 18 05.0427157728	+01 11 23.527902156		16.33	16.3			DA+M	82	0
61	L 536-155	WD*	10 19 47.3372601025	-34 02 21.878581642		17.33	16.52			DAH	14	0
62	G 43-54	WD*	10 29 07.4644835685	+11 27 19.279329583		17.20		16.2		DAP7	51	0
63	Ton 527	WD*	10 33 49.1967544416	+23 09 16.254781992		15.3	15.73			DAP2	120	0
64	WT 306	WD*	10 37 06.7517054976	-44 12 36.957017376		16.0				DAH	11	0
65	EGGR 535	WD*	10 38 55.5700182462	-20 40 56.834110426		15.9	16.28	15.54	15.34	DQ10P	98	0
66	SCR J1046-4146	WD*	10 46 46.0003766064	-41 46 38.845960608		16.52		16.05	15.59	DAH	13	0
67	HE 1045-0908	WD*	10 47 36.1228977120	-09 24 32.628359808		16.78	16.74			DA	31	0
68	GALEX J112221.1+035822	WD*	11 22 21.0990341784	+03 58 22.467525312						DA	25	0
69	SDSS J113655.18+040952.6	WD*	11 36 55.1800730112	+04 09 52.730905968		16.79	17.12			DA+M	34	0
70	V* IZ UMa	WD*	11 39 41.4106847280	+42 05 18.429389196			16.56			DA4.1	44	0
71	SDSS J115126.14+052512.9	WD*	11 51 26.1442094424	+05 25 12.984493008		17.3		18.2		DA	12	0
72	PG 1149+058	WD*	11 51 54.2067404280	+05 28 39.584467236		15.14		15.07		DA4.4	52	0
73	V* GW Vir	WD*	12 01 45.9731868264	-03 45 40.628670300		14.87	15.04			DOQZ1	505	0
74	HE 1211-1707	WD*	12 14 08.2705541328	-17 24 40.910608260		16.8	16.77	17.2		DXH2.2	33	1
75	LP 614-59	WD*	12 14 56.3828498044	-02 34 02.838235659		17.7	17.85			DZP	49	0
76	SDSS J121929.45+471522.8	**	12 19 29.4954086136	+47 15 22.937198508		17.74	17.59	17.23		DA+dM	38	0
77	GALEX J125230.9-023417	WD*	12 52 30.9339922128	-02 34 17.721943032		16.9		17.3		DC	24	0
78	EGGR 436	WD*	13 08 41.1944602216	+85 02 28.161666517		16.76		15.9		DA9P	61	0
79	Ton 1559	WD*	13 09 57.6766028952	+35 09 47.187935136		15.51		15.2		DA4.4	138	0
80	PG 1312+099	WD*	13 15 08.9589505536	+09 37 13.900123380		16.41	16.37			DAH	44	2
81	LAWD 45	WD*	13 19 25.5578183444	-78 23 28.166272794		17.0	16.16	15.73	15.35	DC	29	0
82	GALEX J134211.7-073539	WD*	13 42 11.6718075864	-07 35 38.518857024		16.9		16.5		DA	16	0
83	GALEX J134820.8+381017	WD*	13 48 20.8029670176	+38 10 17.148302976						DAH	16	0
84	PG 1349+552	WD*	13 51 20.2509674304	+54 57 42.595932708		15.51				DA4.1	49	0
85	Gaia DR3 6114344102909485824	WD*	14 01 15.2712266664	-39 14 32.212244688						DAH	9	0
86	GD 165	WD*	14 24 39.1495824408	+09 17 14.160753960		14.46	14.32	14.6	14.91	DA4.1	176	0
87	CWISE J143019.77-562357.5	WD*	14 30 19.2873580200	-56 23 58.326345924						DA	10	0
88	V* MY Aps	WD*	14 33 07.6366196272	-81 20 14.128475593		13.49	13.35	13.65		DA4.1	152	0
89	SDSS J150057.86+484002.3	WD*	15 00 57.8272349016	+48 40 02.404224516		19.17	18.95			DC	15	0
90	PM J15164+2803	WD*	15 16 25.1023121712	+28 03 20.938001652						DAH	28	0
91	CSO 1094	WD*	15 29 35.0015304288	+29 28 01.956739116						DAH:	26	0
92	G 137-24	WD*	15 35 05.8098944592	+12 47 45.199307508		15.31		15.7		DZ	55	0
93	PG 1533-057	WD*	15 36 34.9216754616	-05 52 40.016244216		15.32	15.2			DAP3	45	0
94	GALEX J161218.1+083028	WD*	16 12 18.0751139616	+08 30 28.324213992						DA	19	0
95	GALEX J161634.4+541011	WD*	16 16 34.3617573648	+54 10 11.512023204		17.5		18.3		DAHe	19	0
96	V* AR Sco	EB*	16 21 47.2831986456	-22 53 10.385689092		14.94	14.75			M5+D?	141	0
97	GD 356	WD*	16 40 57.1485192288	+53 41 09.317032080		15.39		15.1		DAEH6.5	133	0
98	V* DN Dra	WD*	16 48 25.6318375106	+59 03 22.658985521		12.34	12.17	12.44		DA4.0	228	0
99	PG 1658+441	WD*	16 59 48.4241073768	+44 01 04.038522204		14.3	14.6			DAP1.6	156	0
100	EGGR 576	WD*	17 05 30.9712965672	+48 03 10.271674152		13.87	13.80			DA3.6	60	1
101	Gaia DR3 5915797694789556096	WD*	17 16 52.0940322264	-59 06 36.285796440						DAH	11	0
102	L 270-31	WD*	17 47 46.9220860320	-52 07 10.885662696		15.8	15.62	15.9		DAP6	55	0
103	EGGR 372	WD*	17 48 07.9928195849	+70 52 35.922050086				13.5		DQ9P	153	0
104	Gaia DR3 6414612172876713472	WD*	18 03 45.8625819960	-75 23 18.347963316						DAH	10	0
105	EGGR 374	WD*	18 30 20.2711538874	+54 47 27.207896312		15.99		14.9		DQ7P	101	0
106	GALEX J183202.8+085635	WD*	18 32 02.8284063864	+08 56 36.244571280						DBA	21	0
107	LAWD 73	WD*	19 00 10.2533239461	+70 39 51.416733790		13.24		13.5		DAP4.5	264	0
108	IPHAS J190132.77+145807.6	WD*	19 01 32.7398565120	+14 58 07.176092088		15.51	15.72	15.78		DC2	42	0
109	GALEX J190835.8+431642	WD*	19 08 35.8930037160	+43 16 42.235023252	17.84					DA	13	0
110	2MASS J19121372-4410450	Psr	19 12 13.7198308494	-44 10 45.084252619					16.055	~	34	0
111	GALEX J191340.9+470930	WD*	19 13 40.8876081048	+47 09 30.675488292	18.71					DA	10	0
112	SDSS J191643.83+393849.7	WD*	19 16 43.8197701440	+39 38 49.362598824	17.362	17.60	17.72	17.93	17.72	DA	29	0
113	SDSS J191719.16+392718.8	WD*	19 17 19.1726542032	+39 27 19.329494976	17.91					DA	13	0
114	PSO J290.1036+50.2894	WD*	19 20 24.8851862736	+50 17 21.048520956	17.701					DA	22	0
115	GALEX J192904.6+444708	WD*	19 29 04.6788742824	+44 47 09.028359420		18.3		18.5		DB	48	0
116	Gaia DR3 6744843579679059968	WD*	19 35 38.6346172368	-32 52 25.554005436						DZAH	11	0
117	V* PY Vul	WD*	19 37 13.7502269447	+27 43 18.733503670		13.14		12.7		DA4.0	138	0
118	LAWD 79	WD*	19 56 29.2263375910	-01 02 32.671070269		13.89	13.56	13.73		DA6.4	158	0
119	GALEX J200708.0-673443	WD*	20 07 07.9807265640	-67 34 42.178743480						DAH	12	0
120	GD 229	WD*	20 12 22.2670866408	+31 13 48.884861856	13.62	14.77	14.85			DXP2	143	0
121	EGGR 261	WD*	20 49 06.6996392736	+37 28 14.050387020		13.40		13.2		DA3.4	88	0
122	BPS CS 22880-0134	WD*	20 54 42.7993483296	-20 39 25.925840856	14.06	15.00	15.06	15.0		DA2.3	28	0
123	LAWD 83	WD*	21 13 16.8549349741	-81 49 12.878285501	13.28	13.82	13.59	13.6		DA4.8	125	0
124	V* IR Peg	WD*	21 34 08.2124719240	+06 50 57.662044329		16.15				PG1159	122	0
125	L 570-26	WD*	21 41 57.5651598552	-33 00 29.801367360			14.47	14.30	14.16	DZ7	45	0
126	LEHPM 4233	WD*	21 48 10.7427337608	-56 26 13.139493684						DAH	11	0
127	UCAC4 747-070768	WD*	21 51 40.1076922512	+59 17 34.854998748				14.51		DAH	23	1
128	WG 39	WD*	21 57 38.3567715267	-51 00 31.521044535		14.94	14.73	14.53		DQ7	87	0
129	Gaia DR3 6397887600292497408	WD*	22 05 52.1109121896	-66 59 34.729007748						DAH	10	0
130	GALEX J221141.7+113603	WD*	22 11 41.7995303472	+11 36 04.647712752		19.4		17.4		DAH	33	0
131	UCAC4 442-127737	WD*	22 36 07.6645782072	-01 40 59.644666308		15.75	15.65	15.86	15.55	DAH	13	0
132	G 28-27	WD*	22 57 26.1169629840	+07 55 42.593636856						DAH	47	0
133	KUV 23162+1220	WD*	23 18 45.1023093816	+12 36 02.772571752		15.54	15.38			DAP4	63	0
134	V* ZZ Psc	WD*	23 28 47.6365087803	+05 14 54.235051503		13.217		13.106		DA4.1	536	0
135	EGGR 161	WD*	23 32 03.5207942068	+26 58 46.119170653		15.52		15.2		DAP4.2	56	0
136	GD 1212	WD*	23 38 50.7400887024	-07 41 19.970752560		13.44	13.26		13.24	DA4.5	64	0
137	Gaia DR3 6350786278796634112	WD*	23 54 19.4105760192	-81 41 04.962582276						DZH	9	0

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