1999MNRAS.307..122M


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.19CEST02:19:23

1999MNRAS.307..122M - Mon. Not. R. Astron. Soc., 307, 122-130 (1999/July-3)

The fraction of double degenerates among DA white dwarfs.

MAXTED P.F.L. and MARSH T.R.

Abstract (from CDS):

We present the results of a radial velocity survey designed to measure the fraction of double degenerates among DA white dwarfs. The narrow core of the Hα line was observed twice or more for 46 white dwarfs yielding radial velocities accurate to a few km.s–1. This makes our survey the most sensitive to the detection of double degenerates undertaken to date. We found no new double degenerates in our sample, though Hα emission from distant companions is seen in two systems. Two stars known to be double degenerates prior to our observations are included in the analysis. We find a 95per cent probability that the fraction of double degenerates among DA white dwarfs lies in the range [0.017, 0.19].

Abstract Copyright: 1999, Royal Astronomical Society

Journal keyword(s): techniques: radial velocities - binaries: spectroscopic - stars: evolution - stars: rotation - supernovae: general - white dwarfs

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 - 2021
#notes
1 LAWD 96 WD* 00 02 10.7243950843 -43 09 55.394478292   13.12 13.05     DAP5.8 104 0
2 WG 2 WD* 00 50 03.6494717240 -52 08 15.515729263 13.354 14.157 14.206 14.31 14.428 DA2.7 77 0
3 EGGR 7 WD* 01 03 49.9233050217 +05 04 30.567630963   14.24   13.7   DA5.9 88 0
4 LAWD 10 WD* 01 37 59.3936600367 -04 59 44.670036387   13.20 12.83 12.8   DA+D1 169 0
5 GD 420 WD* 01 41 21.6192053869 +77 09 00.729828673   14.91   15.0   DA3.0 38 1
6 WD 0226-329 WD* 02 28 27.2036307805 -32 42 33.796507730   13.72 13.84 14.12   DA2.1 12 0
7 Feige 22 WD* 02 30 16.6276774109 +05 15 50.698326875 11.939 12.746 12.798 12.901 13.004 DA2.5 119 0
8 CPD-69 177 WD* 03 10 31.0201840720 -68 36 03.381441176 10.757 11.413 11.394 11.47 11.558 DA3.0 242 0
9 WG 15 WD* 09 58 54.9416147649 -66 53 10.181253441   14.40 14.60     DA1.8 56 0
10 PG 1022+050 WD* 10 24 59.8259661630 +04 46 10.498562889   14.37 14.20 14.2   DA3.5 48 0
11 Ton 1323 WD* 11 04 32.5722911355 +36 10 48.873727889   14.76 14.49     DA3.7 61 0
12 PG 1149+058 WD* 11 51 54.2068266216 +05 28 39.584237596   15.14   15.07   DA4.4 37 0
13 Feige 55 WD* 12 04 38.5356512387 +60 32 08.086450892 11.974 13.224 13.568 13.717 13.896 DAO.9 76 0
14 PG 1204+451 WD* 12 06 47.5414819052 +44 49 54.412957480   14.61 14.37 13.9   DA2.1 35 0
15 PG 1210+141 WD* 12 12 33.8814925363 +13 46 24.899362825   14.38 14.71 14.9   DA1.6 23 1
16 EC 12336-1625 WD* 12 36 13.9037941929 -16 41 52.431802218   15.03 15.10 15.43   DA2.0 14 0
17 PG 1241-010 WD* 12 44 28.5728314003 -01 18 57.853501507   13.86 14.00 14.3   DA2.1 49 0
18 EC 13109-3035 WD* 13 13 41.5799285761 -30 51 33.710901920   14.43 14.92 14.5   DA2.4 19 0
19 LP 737-47 WD* 13 16 43.5976124018 -15 35 58.380845108   14.86 14.86 14.89 14.97 DA3.2 22 0
20 EGGR 188 WD* 13 19 13.7222973484 +45 05 09.808706255   14.16   14.3   DA3.6 56 0
21 BD-07 3632 WD* 13 30 13.6369525883 -08 34 29.470861983 11.803 12.398 12.340 12.39 12.436 DA3.5 174 0
22 LAWD 53 WD* 13 51 22.6872375312 -27 33 57.820242194   15.05 15.00 15.37 15.13 DA5.0 31 0
23 V* MY Aps WD* 14 33 07.6357496582 -81 20 14.126849475   13.49 13.35 13.65   DA4.1 126 0
24 GD 194 WD* 15 52 26.3787018090 +18 10 18.690252959   14.94   15.2   DA3.4 42 0
25 L 202-179 WD* 16 20 34.6137523896 -59 16 17.818785854   15.03 14.93 15.22   DA3.8 14 0
26 PG 1619+123 WD* 16 22 03.8615530302 +12 13 33.549389594   14.95   15.0   DA2.9 25 0
27 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 448 0
28 WG 32 WD* 17 02 56.3376386293 -53 14 36.566318933   13.57 13.48 13.73 13.60 DA3.2 40 0
29 Wolf 665 WD* 17 15 34.8628491650 +33 13 03.893935756   14.43   14.7   DA2.2 62 0
30 Wolf 672 A WD* 17 18 35.1636102144 +01 56 53.205524371       14.63   DA3.7 76 0
31 EGGR 175 WD* 17 45 54.5586314917 -13 17 55.388670387   14.38 14.22     DA3.9 37 0
32 Ross 137 WD* 18 27 13.0872422364 +04 03 46.792534528 13.383 13.981 13.889 13.928 13.958 DA+DC 73 0
33 EGGR 126 WD* 18 29 09.8621857317 -04 29 35.487964512   14.82 14.57 14.74   DA5.4 46 0
34 EGGR 177 WD* 18 30 39.4327319613 -10 36 59.929151196   15.41 15.28 15.82   DA3.6 32 0
35 EGGR 200 WD* 18 42 57.7478203893 -11 08 53.183339852       14.46 14.01 DA4.9 33 0
36 GD 215 WD* 18 43 25.7232809319 +04 20 22.831033463   15.06 14.92 14.2   DA5.6 41 0
37 Lan 18 WD* 18 47 39.0285643340 +01 57 35.440019889 11.68 12.73 12.94 13.1 12.3 DA1.7 73 0
38 BPS CS 22891-0122 WD* 19 18 44.8309239224 -59 46 33.863241614 13.59 14.34 14.39 14.4   DA2.4 18 0
39 GD 219 WD* 19 21 40.4180173962 +14 40 41.402969332   13.07 13.01 13.3   DA3.3 67 0
40 EGGR 134 WD* 19 45 31.7609437281 +16 27 38.767682437   13.96   14.4   DA2.5 51 0
41 CD-30 17706 WD* 20 10 56.8485174654 -30 13 06.629141494 11.654 12.286 12.242 12.311 12.381 DA3.1 227 0
42 L 210-114 WD* 20 18 54.6879678120 -57 21 32.761793423 12.56 13.58 13.73 13.9   DA1.8 58 0
43 GD 231 WD* 20 35 13.8114634080 +18 59 21.701796029   15.30 15.34 16.2   DA2.6 46 1
44 BPS CS 30314-0201 WD* 20 38 38.1470830865 -33 26 35.197529284 13.74 14.50 14.25 14.81   DA2.6 9 0
45 EGGR 141 WD* 20 42 34.7515357829 -20 04 35.936006222 11.511 12.315 12.396 12.488 12.602 DA2.5 92 0
46 EGGR 140 WD* 20 44 21.4586852832 -68 05 21.356883464 12.58 13.35 13.30 13.8   DA3.0 52 0
47 GD 232 WD* 21 01 16.4968560306 +18 20 55.293656587   15.01 15.00 15.5   DA2.8 26 0
48 LAWD 83 WD* 21 13 16.8542099131 -81 49 12.878202704 13.28 13.82 13.59 13.6   DA4.8 88 0
49 LAWD 84 WD* 21 19 36.5324188585 -55 50 14.465612769 13.94 14.50 14.27 14.5   DA5.1 70 0
50 EGGR 150 WD* 21 52 25.3788480672 +02 23 19.576520492 11.942 12.732 12.743 12.839 12.938 DA2.8 170 0
51 EGGR 151 WD* 21 54 06.4537176175 -01 17 09.551874419   14.728 14.515 14.373 13.990 DA5.5 51 0
52 BPS CS 29493-0071 WD* 21 54 53.4010145983 -30 29 18.669659145   14.8 15.05 14.9   DA1.7 34 0
53 V* CD Oct WD* 22 04 20.8587268053 -75 13 26.064864355 14.63 15.22 15.01 14.7   DA5.7 39 0
54 RX J2214.1-4918 WD* 22 14 11.9174871148 -49 19 27.217191655   11.28 11.57 11.7   DA.7 110 0
55 WD 2251-634 WD* 22 55 10.5458240378 -63 10 31.035674692   14.4 14.28     DA2.5 8 0
56 V* ZZ Psc WD* 23 28 47.6364608228 +05 14 54.234982405   13.17   13.0   DA4.1 448 0
57 GD 251 WD* 23 34 20.8685992298 +29 18 37.193228381 14.560 15.563 15.745 15.813 15.981 DA1.8 46 1
58 GD 1192 WD* 23 35 36.6204455812 -16 17 43.655953355   13.47 13.57 13.8   DA3.7 21 0
59 LAWD 94 WD* 23 54 01.0724791071 -33 16 31.077867970   14.6 13.56     DA5.7 50 0

    Equat.    Gal    SGal    Ecl

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2021.06.19-02:19:23

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