2005PASP..117.1378W

Query : 2005PASP..117.1378W

2005PASP..117.1378W - Publ. Astron. Soc. Pac., 117, 1378-1385 (2005/December-0)

Magnetic white dwarfs in the two micron all sky survey: a search for candidate binary systems.

WELLHOUSE J.W., HOARD D.W., HOWELL S.B., WACHTER S. and ESIN A.A.

Abstract (from CDS):

Our understanding of the formation and evolution of magnetic cataclysmic variables from initially detached, post-common-envelope binary stars containing a magnetic white dwarf and a main-sequence star is currently poorly constrained, due to the lack of observational identification of the progenitor systems. Very few potential pre-cataclysmic variables containing a magnetic white dwarf are known, compared with ~25% of the cataclysmic variable population that contain magnetic white dwarfs. We present the results of a search for candidate binary systems containing a magnetic white dwarf, which utilized photometric data from the Two Micron All Sky Survey (2MASS; as well as Hubble Space Telescope and WIYN Observatory follow-up data for several objects). Our target sample was drawn primarily from the comprehensive list of magnetic white dwarfs by Wickramasinghe & Ferrario, plus several recently identified objects selected from the literature. Out of 51 2MASS detections, no convincing binary candidates were found. However, six objects merit additional observation to determine the origin of a small near-infrared excess that could be attributed to a very low mass stellar or substellar companion. An additional four white dwarfs are possibly at the centers of previously unknown, and likely unresolved, planetary nebulae.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Infrared: Stars - magnetic fields - Stars: White Dwarfs

Simbad objects: 72

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Number of rows : 72
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 1 WD* 00 02 40.0947866937 -34 13 39.592411637   15.36 14.94     DC 75 0
2 JL 155 WD* 00 05 38.9808865632 -56 44 41.501807520   15.8 15.40     DB 11 0
3 EGGR 381 WD* 00 12 14.7449947981 +50 25 20.736275736   14.6   14.2   DA7.6 106 0
4 G 158-45 WD* 00 14 12.7919361867 -13 11 01.087005764   16.48 15.88     DC8H 65 0
5 MCT 0026-2150 WD* 00 29 26.1566496072 -21 33 41.746202028   16.587 16.003 15.739   DBH 12 0
6 Feige 7 WD* 00 43 45.9806246832 -10 00 25.016051736   14.49       DBAP3 114 0
7 PB 6290 WD* 01 10 13.2500862840 -01 42 02.926755648   16.734 16.593     DB 14 0
8 GD 1363 WD* 01 29 56.1194726184 -30 55 09.826605372   15.13 14.51     DB 32 0
9 PG 0136+251 WD* 01 38 52.9776840264 +25 23 22.640581464   15.83       DA1.2 91 0
10 PB 8995 WD* 02 01 43.6476688152 -03 01 59.829919572   16.7 17.1 16.9   DAH 17 0
11 PHL 4227 WD* 02 38 41.2504673376 -26 43 19.880111892   17.1 16.6 16.1   D 22 0
12 KPD 0253+5052 WD* 02 57 22.0342360368 +51 03 43.484347872 14.26 15.18 15.22 15.60   DAH 42 0
13 EGGR 476 WD* 02 59 59.1463320316 +08 11 56.433119456   16.33 15.90 15.3   DA7.8 54 0
14 MWD 0307-428 WD* 03 09 38.1831821280 -42 40 42.715193484     16.3     DAH 20 0
15 V* CL Oct WD* 03 17 15.8468594712 -85 32 25.558244556   13.78 13.66 15.19   DAP 180 1
16 LB 9802 WD* 03 17 19.1282833488 -85 32 31.288377552   13.78 13.66 14.43   DA 141 1
17 KUV 03292+0035 WD* 03 31 45.6928429512 +00 45 16.985424096     16.7     DAH 37 0
18 HE 0330-0002 WD* 03 33 20.3685575184 +00 07 20.656091172   16.8       DBH 36 0
19 HE 0338-3853 ** 03 40 36.79008 -38 43 41.4516   16.59   16.11   DA+K5V 9 0
20 WG 47 WD* 04 43 46.4273702112 -78 51 50.182236864 12.36 13.304 13.418 13.764   DA2.1 53 1
21 LP 777-1 WD* 05 05 52.4599051681 -17 22 43.482694273   16.71 15.97     DAH9 59 0
22 EGGR 248 WD* 05 51 19.4818569216 -00 10 21.107152956   15.06 14.60     DQ8P 165 0
23 EGGR 290 WD* 05 56 25.4599888487 +05 21 48.443176471   14.77 14.13 14.00   DA8P 163 0
24 RX J0616.8-6457 WD* 06 16 51.8029331520 -64 57 31.963896828   17.6   18.4 18.42 DA 23 0
25 GD 77 WD* 06 41 12.8216879232 +47 44 19.650545124   14.93   14.9   DAP3.4 62 0
26 V* HR Cam WD* 07 17 09.7856917536 +74 00 40.535184924   14.91 14.97     DA2.6 76 0
27 EGGR 321 WD* 07 33 30.8802796728 +64 09 27.434704716   16.4   15.6   DA11P 57 0
28 EGGR 428 WD* 07 59 59.5807976955 +43 35 21.102152499   16.39   16.0   DAH 51 0
29 GD 90 WD* 08 19 46.3656877152 +37 31 27.935699988   15.96 15.6     DAP 76 0
30 RX J0823.6-2525 WD* 08 23 34.6655665968 -25 25 14.953058544   16.7   15.9   DA1.2 37 1
31 EGGR 61 WD* 08 40 28.0935005160 +19 43 34.488958224   17.6 17.66 17.7   DA 72 0
32 PG 0850+192 HS* 08 53 41.3763185208 +19 01 41.955211272   16.113 16.231     sdOA 21 1
33 EGGR 250 WD* 09 15 56.0774298887 +53 25 23.857612513   14.09   14.1   DCP7 157 0
34 PG 0945+246 ** 09 48 46.6405381296 +24 21 25.877233728   14.14 14.25 14.50 14.47 DA+DXP 69 0
35 LP 315-42 WD* 10 11 41.5774767696 +28 45 59.070596780   18.85   16.1   DQ 53 0
36 PG 1015+014 ** 10 18 05.0427157728 +01 11 23.527902156   16.33 16.3     DA+M 82 0
37 Ton 1206 WD* 10 20 54.1235900880 +36 26 47.596065468   16.05 15.74 16.14   DAH 36 0
38 G 43-54 WD* 10 29 07.4644835685 +11 27 19.279329583   17.20   16.2   DAP7 51 0
39 Ton 527 WD* 10 33 49.1967544416 +23 09 16.254781992   15.3 15.73     DAP2 120 0
40 EGGR 535 WD* 10 38 55.5700182462 -20 40 56.834110426   15.9 16.28 15.54 15.34 DQ10P 98 0
41 V* V382 Vel No* 10 44 48.3975221712 -52 25 31.168268472   15.945 15.737 16.173   ~ 201 0
42 HE 1043-0502 WD* 10 46 09.7940409360 -05 18 15.784921800   17.4   16.7   DBH 22 0
43 HE 1045-0908 WD* 10 47 36.1228977120 -09 24 32.628359808   16.78 16.74     DA 31 0
44 EGGR 76 WD* 11 07 59.9504280373 -05 09 26.034289695 12.397 13.093 13.057 13.141 13.215 DA3 172 0
45 Ruiz 439-162 WD* 11 29 52.0364782335 -31 22 47.219201137   19.0 18.77 18.1   DQH 34 0
46 LBQS 1136-0132 WD* 11 38 39.5170565904 -01 49 03.017985276           DAH 30 0
47 HE 1211-1707 WD* 12 14 08.2705541328 -17 24 40.910608260   16.8 16.77 17.2   DXH2.2 33 1
48 Ton 610 WD* 12 23 14.5191839688 +23 07 51.037639176   15.57 15.64     DAP2.0 37 0
49 HS 1254+3440 WD* 12 57 15.5375283432 +34 14 39.525605016   17.21 17.08     DAH 40 1
50 EGGR 436 WD* 13 08 41.1944602216 +85 02 28.161666517   16.76   15.9   DA9P 61 0
51 PG 1312+099 WD* 13 15 08.9589505536 +09 37 13.900123380   16.41 16.37     DAH 44 2
52 EGGR 437 WD* 13 32 50.7243936792 +01 17 06.326972952   17.49   16.9   DC+DA 49 0
53 SBSS 1349+545 WD* 13 51 41.1712315680 +54 19 47.224875216   15.9 16.4     DAP 40 0
54 PG 1350-090 WD* 13 53 15.5345099352 -09 16 33.374583634   14.81 14.60     DAP5.3 52 1
55 HS 1440+7518 WD* 14 40 05.1341163672 +75 05 33.787957776   15.1 15.3 15.2   DA1 59 0
56 PG 1533-057 WD* 15 36 34.9216754616 -05 52 40.016244216   15.32 15.2     DAP3 45 0
57 GD 356 WD* 16 40 57.1485192288 +53 41 09.317032080   15.39   15.1   DAEH6.5 133 0
58 PG 1658+441 WD* 16 59 48.4241073768 +44 01 04.038522204   14.3 14.6     DAP1.6 156 0
59 L 270-31 WD* 17 47 46.9220860320 -52 07 10.885662696   15.8 15.62 15.9   DAP6 55 0
60 EGGR 372 WD* 17 48 07.9928195849 +70 52 35.922050086       13.5   DQ9P 153 0
61 V* V4444 Sgr No* 18 07 36.19944 -27 20 13.2144           ~ 36 0
62 G 183-35 WD* 18 16 08.8668090388 +24 54 42.847852457   16.4   16.9   DAP8 43 0
63 G 141-2 WD* 18 20 30.885552 +12 39 18.82800   16.66 16.04 16.31   DA8 47 0
64 G 227-28 WD* 18 21 19.8310303352 +61 01 07.383349520   16.62   15.0   DA10 61 0
65 V* V4633 Sgr No* 18 21 40.48680 -27 31 37.2972           ~ 86 0
66 EGGR 374 WD* 18 30 20.2711538874 +54 47 27.207896312   15.99   14.9   DQ7P 101 0
67 LAWD 73 WD* 19 00 10.2533239461 +70 39 51.416733790   13.24   13.5   DAP4.5 264 0
68 LAWD 79 WD* 19 56 29.2263375910 -01 02 32.671070269   13.89 13.56 13.73   DA6.4 158 0
69 GD 229 WD* 20 12 22.2670866408 +31 13 48.884861856 13.62 14.77 14.85     DXP2 143 0
70 HE 2201-2250 WD* 22 04 45.2262547968 -22 36 13.483980936     16.2     DH 19 0
71 KUV 23162+1220 WD* 23 18 45.1023093816 +12 36 02.772571752   15.54 15.38     DAP4 63 0
72 EGGR 161 WD* 23 32 03.5207942068 +26 58 46.119170653   15.52   15.2   DAP4.2 56 0

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