2017A&A...602A..16T


Query : 2017A&A...602A..16T

2017A&A...602A..16T - Astronomy and Astrophysics, volume 602A, 16-16 (2017/6-1)

The binarity of the local white dwarf population.

TOONEN S., HOLLANDS M., GANSICKE B.T. and BOEKHOLT T.

Abstract (from CDS):

Context. As endpoints of stellar evolution, white dwarfs (WDs) are powerful tools to study the evolutionary history of the Galaxy. In particular, the multiplicity of WDs contains information regarding the formation and evolution of binary systems.
Aims. Can we understand the multiplicity of the local WD sample from a theoretical point of view? Population synthesis methods are often applied to estimate stellar space densities and event rates, but how well are these estimates calibrated? This can be tested by a comparison with the 20pc sample, which contains ~=100 stars and is minimally affected by selection biases.
Methods. We model the formation and evolution of single stars and binaries within 20pc with a population synthesis approach. We construct a model of the current sample of WDs and differentiate between WDs in different configurations, that is single WDs, and resolved and unresolved binaries containing a WD with either a main-sequence (MS) component or with a second WD. We also study the effect of different assumptions concerning the star formation history, binary evolution, and the initial distributions of binary parameters. We compile from the literature the available information on the sample of WDs within 20pc, with a particular emphasis on their multiplicity, and compare this to the synthetic models.
Results. The observed space densities of single and binary WDs are well reproduced by the models. The space densities of the most common WD systems (single WDs and unresolved WD-MS binaries) are consistent within a factor two with the observed value. We find a discrepancy only for the space density of resolved double WDs. We exclude that observational selection effects, fast stellar winds, or dynamical interactions with other objects in the Milky Way explain this discrepancy. We find that either the initial mass ratio distribution in the solar neighbourhood is biased towards low mass-ratios, or more than ten resolved DWDs have been missed observationally in the 20pc sample. Furthermore, we show that the low binary fraction of WD systems (∼25%) compared to solar-type MS-MS binaries (∼50%) is consistent with theory, and is mainly caused by mergers in binary systems, and to a lesser degree by WDs hiding in the glare of their companion stars. Lastly, Gaia will dramatically increase the size of the volume-limited WD sample, detecting the coolest and oldest WDs out to ~=50pc. We provide a detailed estimate of the number of single and binary WDs in the Gaia sample.

Abstract Copyright: © ESO, 2017

Journal keyword(s): binaries: close - white dwarfs - stars: evolution - stars: evolution

CDS comments: Some objects not in SIMBAD (WD 0005+395, WD 0252+497, WD 0340+198,... )

Simbad objects: 227

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Number of rows : 227
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 LAWD 96 WD* 00 02 10.7241976499 -43 09 55.390578662   13.12 13.05     DAP5.8 109 0
2 LAWD 1 WD* 00 02 40.0947866937 -34 13 39.592411637   15.36 14.94     DC 64 0
3 LP 464-57 WD* 00 07 20.5491513439 +12 30 21.160516000   16.8   15.9   DC 16 0
4 GD 5 WD* 00 11 22.4620778352 +42 40 40.922716764   15.5   15.0   DA7.0 25 0
5 EGGR 381 WD* 00 12 14.7449947981 +50 25 20.736275736   14.6   14.2   DA7.6 90 0
6 L 50-73 WD* 00 13 49.8915895301 -71 49 54.255953974           DA8.0 19 0
7 G 158-45 WD* 00 14 12.7919361867 -13 11 01.087005764   16.48 15.88     DC8H 54 0
8 EGGR 459 WD* 00 22 15.1872356718 +42 36 42.154455502   17.22   16.6   DC9 25 0
9 LP 525-21 WD* 00 27 36.6278649600 +05 42 03.130213593   17.2   15.6   DA 15 0
10 EGGR 246 WD* 00 41 26.0270023159 -22 21 02.292155084   15.25 14.60 14.088 13.671 DQ9 107 0
11 Wolf 28 WD* 00 49 09.8983373329 +05 23 18.993828947 12.984 12.92 12.374 12.106 11.854 DZ7.5 239 0
12 LAWD 7 WD* 00 55 50.3351982209 -11 27 31.501306867   15.61 15.26 14.9   DA7.1 39 0
13 HD 6101 ** 01 02 24.5531926356 +05 03 41.608565086 10.018 9.175 8.131 7.516 6.971 K2V 64 0
14 EGGR 7 WD* 01 03 49.9225512196 +05 04 30.568726390   14.24   13.7   DA5.9 91 0
15 LP 294-61 WD* 01 10 44.6790564360 +27 58 15.737460600   15.7 16.15 14.9   DAZ9 18 0
16 Wolf 1516 WD* 01 18 00.0751414753 +16 10 20.561712526   13.96   13.9   DC6 89 0
17 LP 991-16 WD* 01 24 03.9865613559 -42 40 38.426729027     14.83 14.52 14.19 DA7H 25 0
18 EGGR 307 WD* 01 25 24.4663862522 -26 00 44.451114373   15.34 15.0     DC 42 0
19 LAWD 10 WD* 01 37 59.3936818351 -04 59 44.668541360   13.20 12.83 12.8   DA+D1 172 0
20 PG 0136+152 WD* 01 38 56.8741489416 +15 27 42.390858348   15.2 14.37 14.9   DA6.2 22 0
21 L 88-59 WD* 01 43 00.9833777734 -67 18 30.353062494   14.33 13.90 13.52 13.23 DA8.1 51 0
22 G 244-37 PM* 01 51 51.1331191583 +64 26 05.922299097       11.036   M2.5V 55 0
23 EGGR 268 WD* 01 51 51.1387595810 +64 25 52.547329311   13.6   12.8   DA5.6 46 0
24 GD 279 WD* 01 52 02.9620032216 +47 00 06.651152568 11.906 12.519 12.463 12.519 12.586 DA3.6 93 0
25 HD 13445 PM* 02 10 25.9181700303 -50 49 25.465181208   6.945 6.117     K1.5V 438 1
26 HD 13445B WD* 02 10 26.1144016939 -50 49 26.333501261           DQ6 40 0
27 EGGR 168 WD* 02 11 20.8420869594 +39 55 21.516404474   14.80 14.50 14.4   DAZ6.9 107 0
28 GD 25 WD* 02 16 16.3515691488 +39 51 25.411561956   14.77   14.6   DA5.4 55 0
29 EGGR 16 WD* 02 16 58.0227724350 +42 58 05.242149904   16.96 16.23 16.3   DA9.5 59 0
30 EGGR 471 WD* 02 32 37.9054932741 -14 11 51.767255899   16.51 15.76     DC9 46 0
31 LP 830-14 WD* 02 35 21.7949399589 -24 00 47.123038900   16.4       DC 28 0
32 G 36-29 WD* 02 39 19.6865183393 +26 09 57.457543554   17.0   15.4   DA 23 0
33 EGGR 565 WD* 02 46 30.8013110459 -02 27 23.461070842   16.34 15.38   15.09 DA7.4 63 0
34 EGGR 473 WD* 02 48 36.4291217434 +54 23 22.464606271   16.25   15.1   DAZ9 62 0
35 LAWD 13 WD* 02 56 17.2209885870 -70 22 10.848492817 13.72 14.25 14.07 14.03 14.00 DA4.7 56 1
36 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 255 0
37 EGGR 566 WD* 03 25 11.0474878302 -01 49 15.047041848   16.8 16.22     DZA9 74 0
38 LP 888-63 LM* 03 28 48.4448358846 -27 19 04.603027055   15.6 13.80     M3 27 0
39 LAWD 14 WD* 03 28 48.7986016948 -27 19 00.096684530   14.0 13.56     DA5.4 73 1
40 Wolf 219 WD* 03 44 34.8473315202 +18 26 09.820674151   15.50   14.8   DQ8 81 0
41 LP 593-56 WD* 03 47 06.8255317424 +01 38 47.638115913   16.7 16.52 15.8 15.54 DQ9 21 0
42 G 7-16 WD* 04 00 26.6831052624 +08 14 06.930002800   16.62   15.4   DC9 44 0
43 * omi02 Eri Er* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 787 0
44 * omi02 Eri C Er* 04 15 21.5359980886 -07 39 20.694578096   12.85 11.17     M4.5V 208 0
45 * omi02 Eri B WD* 04 15 21.7957181469 -07 39 29.203986789 9.147 9.83 9.53     DA2.9 327 0
46 * eps Ret B WD* 04 16 30.0395479584 -59 17 57.181990704     12.5     DA3 24 1
47 V* RR Cae WD* 04 21 05.5631820426 -48 39 07.061113433 14.50 14.92 14.40     DA7.8 146 1
48 EGGR 169 WD* 04 25 53.7276237576 +12 11 48.337246428   15.96 15.44 15.54 14.77 DA8 49 0
49 EGGR 482 WD* 04 26 20.6972178793 +04 32 30.625334004   18.21   16.7   DC9 32 0
50 G 175-34 PM* 04 31 11.5144294005 +58 58 37.463848495     10.98     M4.0V 136 0
51 EGGR 180 WD* 04 31 12.5714396826 +58 58 41.292707803 12.29 12.77   12.8   DC5 121 0
52 NAME Ret GlC 04 36 10.15 -58 51 34.8   14.00 14.25 13.50   ~ 155 1
53 HD 283750B WD* 04 36 44.8959324504 +27 09 51.523283628   16.46   15.4   DC8 89 1
54 HD 283750 BY* 04 36 48.2421502608 +27 07 55.888214520   9.354   7.4   K2.5Ve 264 2
55 EGGR 41 WD* 04 37 47.4072688697 -08 49 10.619853645   14.24 14.10     DQ8 81 0
56 PM J04586+6209 WD* 04 58 39.2546969688 +62 09 07.950104568   15.30 14.48 14.21 12.64 DA+dM 8 0
57 G 84-26 WD* 04 59 43.2138583272 -00 22 38.863005456   15.8       DA4.4 21 0
58 LP 777-1 WD* 05 05 52.4599051681 -17 22 43.482694273   16.71 15.97     DAH9 48 0
59 EGGR 524 WD* 05 14 03.5037732293 +08 00 15.126638361   16.30   15.7   DA7.6 37 0
60 GD 69 WD* 05 36 20.2147083168 +41 29 55.622008464   15.07 14.75     DA6.5 49 0
61 EGGR 248 WD* 05 51 19.4818569216 -00 10 21.107152956   15.06 14.60     DQ8P 145 0
62 EGGR 45 WD* 05 55 09.5304871511 -04 10 07.065341021   15.49 14.45 13.994 13.538 DZ11 113 0
63 EGGR 290 WD* 05 56 25.4599888487 +05 21 48.443176471   14.77 14.13 14.00   DA8P 149 0
64 G 105-30 WD* 06 20 47.7538593055 +06 45 17.122253441   15.9   15.8   DA8.5 38 0
65 LEHPM 2-505 WD* 06 21 41.6402658254 -40 16 18.851112964           DZ 9 0
66 G 106-51B WD* 06 30 38.5997399928 -02 05 50.485413624     15.32 15.43   DA7.3 30 0
67 G 106-51 PM* 06 30 38.8042685496 -02 05 53.936865204   15.62 14.69   12.41 M3/4: 10 0
68 L 182-44 PM* 06 33 49.9711873177 -58 31 42.450688727 14.322 13.11 11.57 11.22 9.22 M2.5 56 0
69 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1488 0
70 * alf CMa B WD* 06 45 09.3041925037 -16 43 00.724740067   8.41 8.44     DA1.9 524 1
71 EGGR 484 WD* 06 47 22.1508576098 +02 31 08.914947169   16.00   15.7   DA7.0 49 0
72 LAWD 23 WD* 06 47 37.9897150309 +37 30 57.066665144   11.97 12.07 12.26   DA2.3 159 0
73 EGGR 342 WD* 06 53 26.6832549917 +64 03 42.046262589   17.21   16.1   DA8.4 30 0
74 G 250-27 WD* 06 53 50.4297782893 +63 55 58.040875841   16.7 16.13 15.8   DA 15 0
75 L 454-9 WD* 06 57 05.9128954521 -39 09 35.682503054   15.60 15.20 15.14 14.51 DA8.0 16 0
76 EGGR 485 WD* 07 00 51.6637780968 +31 57 43.832015694   17.53   15.7   DC10 44 0
77 L 886-6 WD* 07 01 54.8387102144 -06 27 46.230821653   16.2 15.42     DA7.6 42 0
78 SCR J0708-6706 WD* 07 08 52.2811191720 -67 06 31.425046740   17.03   15.82 15.26 DC 15 0
79 G 107-69 PM* 07 30 42.7784278176 +48 11 58.588890241   15.21   13.0   M4V 57 0
80 G 107-70 ** 07 30 47.30952 +48 10 26.6124 16.01 15.61   14.4   DA+DA 94 0
81 EGGR 321 WD* 07 33 30.8802796728 +64 09 27.434704716   16.4   15.6   DA11P 46 0
82 * alf CMi B WD* 07 39 17.8800 +05 13 26.800   10.7 10.92     DQZ 151 0
83 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1836 0
84 LAWD 25 WD* 07 40 20.7886676070 -17 24 49.156867583   13.36 13.061 12.886 12.70 DZQA6 196 0
85 * 171 Pup PM* 07 45 34.9212542040 -34 10 21.185626324   5.909 5.362     F9V 293 0
86 VB 3 WD* 07 45 38.4274938131 -33 55 51.341406846   17.40 16.70 16.21 15.23 DC10 38 0
87 EGGR 426 WD* 07 50 14.5843350628 +07 11 48.917000372   17.9   16.2   DC9 64 0
88 EGGR 427 WD* 07 50 15.3418409575 +07 11 37.097929321   17.6   16.1   DC9 62 0
89 LAWD 26 WD* 07 53 08.1439021017 -67 47 31.382011435   14.75 14.09     DA9.0 98 0
90 LP 207-50 WD* 07 53 13.2817719403 +42 30 01.689387287   18.0   16.8   DC 23 0
91 SCR J0753-2524 WD* 07 53 56.6185035783 -25 24 01.480019904   16.18   15.25 15.67 DA10 17 0
92 CD-24 6144 PM* 07 54 10.8827214844 -25 18 11.422307648 12.286 11.107 9.715 8.845 8.029 M0 43 0
93 LP 257-28 WD* 08 05 57.6707602770 +38 33 44.664010601   17.2   16.2   DC9 29 0
94 L 97-3 WD* 08 06 53.7536568947 -66 18 16.701075068   13.76 13.70 13.66 13.61 DQ 87 1
95 CBS 67 WD* 08 09 11.2104690384 +35 27 57.081427596   15       DA 20 0
96 G 111-64 WD* 08 14 11.1653927952 +48 45 29.809901952   15.4   14.7   DC 26 0
97 SCR J0818-3110 WD* 08 18 40.2607671929 -31 10 20.327207159   16.1   15.1 14.9 DZ 20 0
98 SCR J0821-6703 WD* 08 21 26.7015854766 -67 03 20.024531545     15.34 14.82 14.32 DA10.0 18 1
99 EGGR 249 WD* 08 30 39.4612203776 +32 41 47.230399185   16.02   15.3   DA6.8 53 0
100 G 252-19 PM* 08 38 35.3938571277 +75 47 46.016761885   15.1   13.7   ~ 11 0
101 CD-32 5613 WD* 08 41 32.4290850497 -32 56 32.915823461   12.07 11.85 12.3   DA5.5 291 0
102 LP 726-1 WD* 08 42 48.4648342296 -13 47 13.209649368     15.72 15.36 15.02 DZ10 19 0
103 Ton 949 WD* 08 46 44.4139511280 +35 38 33.562129236   15.03   14.4   DZ 38 0
104 Ton 368 WD* 08 59 14.7138293023 +32 57 12.158356354   15.18   14.9   DQ6 93 0
105 HD 77408 PM* 09 03 15.7430487906 +32 52 53.167659330   7.53   6.8   F6IV 71 0
106 EGGR 250 WD* 09 15 56.0774298887 +53 25 23.857612513   14.09   14.1   DCP7 139 0
107 EGGR 431 V* 09 41 59.3216028696 +06 57 17.181979848   15.21 14.90     dF 26 1
108 EGGR 251 WD* 09 50 17.1410927808 +53 15 14.832491112   15.30   15.1   DQ6 58 0
109 EGGR 69 WD* 09 57 48.3483199086 +24 32 55.543566200   15.34 15.09 14.4   DA5.8 62 0
110 LP 315-42 WD* 10 11 41.5774767696 +28 45 59.070596780   18.85   16.1   DQ 38 0
111 WT 1759 WD* 10 12 01.8720031423 -18 43 33.272144578     15.446 15.55 14.92 DZ7 30 1
112 EGGR 350 WD* 10 23 09.0629848950 +63 27 41.489054140   15.09   14.6   DA7.3 60 0
113 LP 37-186 WD* 10 37 02.4755594097 +71 10 58.705020158   17.3   16.1   DC9 34 0
114 EGGR 535 WD* 10 38 55.5700182462 -20 40 56.834110426   15.9 16.28 15.54 15.34 DQ10P 83 0
115 BD-18 3019B WD* 10 45 39.0428670370 -19 06 45.026254097     15.5 15.75   DQ 48 0
116 BD-18 3019 PM* 10 45 39.0910479817 -19 06 51.717585825   12.794 11.21 10.69   M0V 70 0
117 LAWD 34 WD* 10 57 35.1341950895 -07 31 23.176779615 14.078 14.626 14.338 14.132 13.921 DC 77 0
118 EGGR 76 WD* 11 07 59.9504280373 -05 09 26.034289695 12.397 13.093 13.057 13.141 13.215 DA3 150 0
119 L 970-27 PM* 11 08 06.5391855920 -05 13 47.135439598 15.253 14.058 12.559 11.479 10.125 M3V 53 0
120 SCR J1118-4721 WD* 11 18 27.1995687257 -47 21 56.961738150   16.37   15.62 15.18 DC 15 0
121 Ross 627 WD* 11 24 12.9710801226 +21 21 35.569805995       14.28   DA6.8 113 0
122 GD 309 WD* 11 26 52.3938170592 +59 19 17.103343224   15.5   14.8   DA4.7 28 0
123 * 20 Crt PM* 11 34 29.4864443348 -32 49 52.822793411   6.79 5.98 7.17   K0V 215 0
124 * 20 Crt B WD* 11 34 30.4777605856 -32 50 02.404764059   17 15     DC 39 0
125 GD 140 WD* 11 37 05.1041466528 +29 47 58.288741080 11.47 12.42 12.45 12.73 12.714 DA2.2 229 0
126 LAWD 37 WD* 11 45 42.9169346379 -64 50 29.461957832 11.08 11.725 11.513 11.34 11.163 DQ 252 0
127 EGGR 353 WD* 11 45 44.5682292437 +63 05 59.152298318   17.04   16.0   DA9 32 1
128 PM J11508+6831 WD* 11 50 52.3329426456 +68 31 15.971336760           DA7 21 1
129 LP 852-7 WD* 12 05 26.6739103248 -23 33 12.139045488   13.04 12.90 12.66 12.52 DA5.7 49 0
130 G 197-47 WD* 12 11 29.2732556757 +57 24 17.242313993   16.34   15.3   DA8.6 51 0
131 WG 21 WD* 12 26 42.0226230528 -66 12 18.467291952   14.37 13.97     DA6.6 39 0
132 WG 22 WD* 12 38 49.7811220835 -49 48 00.219515411   14.14 13.96     DA4.2 219 0
133 Wolf 457 WD* 13 00 09.0631835435 +03 28 41.063241871 16.356 16.452 15.808 15.429 15.044 DAQZ8 96 0
134 EGGR 436 WD* 13 08 41.1944602216 +85 02 28.161666517   16.76   15.9   DA9P 48 0
135 NAME ER 8 WD* 13 12 56.4722073575 -47 28 07.912819252   18.45 17.11 16.32 15.72 DC 37 0
136 PG 1310+583 WD* 13 12 57.9037281360 +58 05 11.290690392   13.89   14.2   DA4.7 40 0
137 LAWD 45 WD* 13 19 25.5578183444 -78 23 28.166272794   17.0 16.16 15.73 15.35 DC 18 0
138 Ross 476 PM* 13 30 02.7963075100 -08 42 25.463682863   15.84 14.18 14.035   M4V 54 0
139 BD-07 3632 WD* 13 30 13.6370112733 -08 34 29.468140653 11.803 12.398 12.340 12.39 12.436 DA3.5 180 0
140 Wolf 489 WD* 13 36 31.8521839520 +03 40 45.942173346   15.66   14.48   DC9 112 0
141 PM 13391-3400 WD* 13 42 02.8765298428 -34 15 19.440554339     17 16.00 15.56 DA9.5 20 0
142 PG 1344+573 WD* 13 46 02.0575456032 +57 00 32.790211020   13.4   13.5   DA3.6 50 0
143 EGGR 360 WD* 13 47 24.3696354602 +10 21 38.013189353   15.49   14.8   DA7.1 92 0
144 EGGR 438 WD* 13 48 03.0103253113 +23 34 46.443561286   16.72   15.2   DC9 68 0
145 LP 380-6 PM* 13 48 13.4121181170 +23 36 48.705882841   17.26   14.3   M5V 39 0
146 PG 1350-090 WD* 13 53 15.5345099352 -09 16 33.374583634   14.81 14.60     DAP5.3 41 1
147 V* MY Aps WD* 14 33 07.6366196272 -81 20 14.128475593   13.49 13.35 13.65   DA4.1 130 0
148 LP 801-9 WD* 14 47 25.3408507940 -17 42 15.755350506   17.42 16.46     DC10 40 0
149 LP 327-59 WD* 15 26 21.0560883360 +29 36 22.693357476   18.4   16.1   DA 13 0
150 G 137-24 WD* 15 35 05.8098944592 +12 47 45.199307508   15.31   15.7   DZ 34 0
151 GD 187 WD* 15 40 33.3576501024 +33 08 52.504639152   16.0   15.0   DA 21 0
152 LP 384-38 WD* 15 42 34.6316154401 +23 29 41.562185869   17.0   16.3   DA 15 0
153 HD 140901 PM* 15 47 29.1010163043 -37 54 58.722921986   6.73 6.01     G7IV 173 0
154 HD 140901B WD* 15 47 30.0209908033 -37 55 08.460010675   13.10 12.80 13.53 12.34 DA4.8 87 0
155 EGGR 117 WD* 16 11 25.6063713071 +13 22 17.937724651   15.33   15.2   DA5.4 72 0
156 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 469 0
157 HD 147513 PM* 16 24 01.2911377368 -39 11 34.729913940 6.17 6.02 5.376     G5V 336 1
158 Ross 640 WD* 16 28 25.0030896166 +36 46 15.846877416   14.01   13.9   DZ6 193 0
159 G 138-38 WD* 16 32 33.1685717970 +08 51 22.672703259   15.26   14.6   DA8 18 0
160 EGGR 258 WD* 16 34 21.5518633862 +57 10 08.868180953   15.49   14.9   DQ8 117 0
161 PG 1632+177 WD* 16 34 41.8477268232 +17 36 34.089084576   13.36 13.14 13.34   DA4.9 38 0
162 PG 1633+434 WD* 16 35 01.4291783063 +43 17 36.347179696   15.26   14.5   DAZ7.6 73 0
163 GD 356 WD* 16 40 57.1485192288 +53 41 09.317032080   15.39   15.1   DAEH6.5 112 0
164 V* DN Dra WD* 16 48 25.6318375106 +59 03 22.658985521   12.34 12.17 12.44   DA4.0 208 0
165 LP 276-33 WD* 16 54 45.6926039157 +38 29 36.628370427   17.1 15.86 16.5   DZA 49 0
166 EGGR 197 WD* 16 57 09.8599362431 +21 26 48.659961060   14.32   14.1   DA5.4 86 0
167 LP 331-27 WD* 16 59 40.0201651965 +32 03 20.457967929   17.3   17.0   DA 15 0
168 EGGR 494 WD* 17 08 07.9651989788 +02 57 37.081283576   15.65   14.5   DZ7 59 0
169 GD 362 WD* 17 31 34.3168718112 +37 05 20.711767812   16.3   16.4   DAZB 166 0
170 EGGR 372 WD* 17 48 07.9928195849 +70 52 35.922050086       13.5   DQ9P 133 0
171 EGGR 199 WD* 17 49 50.1474575152 +82 46 26.061955719   14.92   14.5   DA6.8 83 0
172 LSR J1758+1417 WD* 17 58 22.9048465437 +14 17 37.915158868   17.2   16.4   DA10 18 0
173 LSR J1817+1328 WD* 18 17 06.4969710720 +13 28 24.991658238   16.6 15.85 15.4 14.92 DA10 22 0
174 G 227-28 WD* 18 21 19.8310303352 +61 01 07.383349520   16.62   15.0   DA10 48 0
175 EGGR 374 WD* 18 30 20.2711538874 +54 47 27.207896312   15.99   14.9   DQ7P 87 0
176 LAWD 73 WD* 19 00 10.2533239461 +70 39 51.416733790   13.24   13.5   DAP4.5 237 0
177 G 142-20 WD* 19 14 35.9905416043 +14 28 25.884238416   16.5       DA 19 1
178 EGGR 375 WD* 19 18 58.6307251776 +38 43 21.479206332   15.02   14.1   DC7 69 1
179 L 923-22 PM* 19 20 33.4587465360 -07 39 43.752495492   13.18 11.676 11.847   M5V 52 0
180 LAWD 74 WD* 19 20 34.9229289504 -07 40 00.065957592 11.553 12.345 12.290 12.229 12.164 DBQA5 217 0
181 GD 219 WD* 19 21 40.4179321464 +14 40 41.404467612   13.07 13.01 13.3   DA3.3 74 0
182 V* PY Vul WD* 19 37 13.7502269447 +27 43 18.733503670   13.14   12.7   DA4.0 124 0
183 LAWD 79 WD* 19 56 29.2263375910 -01 02 32.671070269   13.89 13.56 13.73   DA6.4 133 0
184 EGGR 498 WD* 20 05 34.8732768746 -10 56 54.432926709   17.91 16.89 16.4   DA10 51 0
185 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 239 0
186 LEHPM 2-5312 WD* 20 12 31.7835496535 -59 56 51.671944462       15.469 14.99 DC9 18 0
187 G 24-9 WD* 20 13 55.6788159161 +06 42 44.827736377 15.733 16.176 15.751 15.476 15.248 DC7 93 0
188 G 24-10 PM* 20 13 58.9849552451 +06 41 16.158210767   14.74   12.807   M3.33 36 0
189 HD 340611 WD* 20 34 21.8847019255 +25 03 49.750446346 10.687 11.471 11.546 11.648 11.728 DA2.4 304 0
190 EGGR 141 WD* 20 42 34.7517579705 -20 04 35.932296319 11.511 12.315 12.396 12.488 12.602 DA2.5 100 0
191 L 495-82 WD* 20 43 49.2097540365 -39 03 18.019947587   14.29 13.74 13.77 13.68 DA4.5 20 0
192 EGGR 140 WD* 20 44 21.4586818392 -68 05 21.357505752 12.58 13.35 13.30 13.8   DA3.0 58 0
193 EGGR 261 WD* 20 49 06.6996392736 +37 28 14.050387020   13.40   13.2   DA3.4 70 0
194 G 187-8 WD* 20 50 20.6528403623 +26 30 40.767339538       15.30   DA9 44 0
195 LP 872-20 WD* 20 50 59.9019038928 -24 52 03.788138892     15.60     DA 14 0
196 Ross 193B WD* 20 56 47.7846012257 -04 50 39.537436123   17.81 16.68     DC10 67 0
197 Ross 193 Er* 20 56 48.5388486253 -04 50 49.115145586 14.455 13.444 11.916 10.776 9.266 M3Vnne 77 0
198 LAWD 83 WD* 21 13 16.8549349741 -81 49 12.878285501 13.28 13.82 13.59 13.6   DA4.8 96 0
199 EGGR 378 WD* 21 18 56.2636115928 +54 12 41.243943888 11.76     12.9   DA3.4 95 1
200 LAWD 84 WD* 21 19 36.5325585235 -55 50 14.465412588 13.94 14.50 14.27 14.5   DA5.1 75 0
201 G 263-3 WD* 21 26 57.6561357825 +73 38 44.668257289 12.15 12.80 12.83 13.30   DA3.1 100 0
202 Ross 203 WD* 21 36 16.3860993504 -13 18 34.504360848 13.63 13.91 13.65 14.01   DA5.0 20 0
203 L 570-26 WD* 21 41 57.5651598552 -33 00 29.801367360     14.47 14.30 14.16 DZ7 21 0
204 EGGR 148 WD* 21 42 41.0063054408 +20 59 58.123903616   13.40   12.9   DQ6 113 0
205 EGGR 151 WD* 21 54 06.4513977984 -01 17 09.525582096   14.728 14.515 14.373 13.990 DA5.5 54 0
206 WG 39 WD* 21 57 38.3567715267 -51 00 31.521044535   14.94 14.73 14.53   DQ7 72 0
207 CD-51 13128 Er* 21 57 41.2035635911 -51 00 22.237732006 12.968 12.008 10.487 9.416 8.101 M2Ve 84 0
208 V* CD Oct WD* 22 04 20.8589166215 -75 13 26.063295918 14.63 15.22 15.01 14.7   DA5.7 43 0
209 G 233-2 WD* 22 11 53.9174305464 +56 49 46.769663244       14.38   DA 16 0
210 [OHD2001] WD J2214-390 WD* 22 14 34.7532659674 -38 59 07.266850500     16.14 15.61 15.24 DA8 23 0
211 LP 287-39 WD* 22 17 47.6190906902 +37 07 50.922859738   17.7   16.2   DC 17 0
212 SSSPM J2231-7514 WD* 22 30 39.9813622429 -75 13 55.234553688       15.924 15.33 DC9 25 1
213 EGGR 155 WD* 22 49 05.5507896558 +22 36 31.991540832   14.55   13.8   DA4.7 97 0
214 EGGR 283 WD* 22 51 23.0280755320 +29 39 44.441403962   16.22   15.1   DA8.1 74 0
215 EGGR 453 WD* 22 53 53.3851734316 -06 46 54.488228178   17.53 15.66 15.70   DZ13 90 1
216 G 233-42 PM* 23 09 57.8595732308 +55 06 47.377836794   17.0   14.6   M5V 17 0
217 LSPM J2309+5506E WD* 23 09 58.5347397974 +55 06 49.429144794   16.0   14.3   DA 11 0
218 HD 218572 PM* 23 10 20.5693703412 -68 50 20.026272139   9.80 8.78     K3+Vk: 54 0
219 LP 522-46 WD* 23 25 19.8723998499 +14 03 39.604529500   16.3 16.05 15.3 15.10 DA 29 0
220 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.17   13.0   DA4.1 470 0
221 GD 1212 WD* 23 38 50.7400887024 -07 41 19.970752560   13.44 13.26   13.24 DA4.5 44 0
222 LAWD 93 WD* 23 43 50.7212145360 +32 32 46.728318300   13.06 12.94 13.12   DA3.8 141 0
223 G 130-6 ** 23 43 53.1084 +32 35 38.751   13.23   11.316   M1.5V 51 0
224 LP 643-65 WD* 23 47 35.1322328808 +03 04 31.867060584   17.8   16.2   DC 13 0
225 EGGR 506 WD* 23 49 55.0276048857 +29 34 04.024907249   16.1 15.72 15.9   DA8.5 50 0
226 LAWD 94 WD* 23 54 01.0726392457 -33 16 31.078214643   14.6 13.56     DA5.7 53 0
227 BPM 31492 * ~ ~   15.8       ~ 2 0

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2023.01.28-12:21:45

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