2017ApJ...850...34B

Query : 2017ApJ...850...34B

2017ApJ...850...34B - Astrophys. J., 850, 34-34 (2017/November-3)

A spectroscopic search for white dwarf companions to 101 nearby M dwarfs.

BAR I., VREESWIJK P., GAL-YAM A., OFEK E.O. and NELEMANS G.

Abstract (from CDS):

Recent studies of the stellar population in the solar neighborhood (<20 pc) suggest that there are undetected white dwarfs (WDs) in multiple systems with main-sequence companions. Detecting these hidden stars and obtaining a more complete census of nearby WDs is important for our understanding of stellar and galactic evolution, as well as the study of explosive phenomena. In an attempt to uncover these hidden WDs, we present intermediate resolution spectroscopy over the wavelength range of 3000-25000 Å of 101 nearby M dwarfs (dMs), observed with the Very Large Telescope X-Shooter spectrograph. For each star we search for a hot component superimposed on the dM spectrum. X-Shooter has excellent blue sensitivity and thus can reveal a faint hot WD despite the brightness of its red companion. Visual examination shows no clear evidence of a WD in any of the spectra. We place upper limits on the effective temperatures of WDs that may still be hiding by fitting dM templates to the spectra and modeling the WD spectra. On average our survey is sensitive to WDs hotter than about 5300 K. This suggests that the frequency of WD companions of Teff 5300 K with separation of the order of <=50 au among the local dM population is <3% at the 95% confidence level. The reduced spectra are made available via the WISeREP3 repository.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: general - stars: late-type - white dwarfs - white dwarfs

VizieR on-line data: <Available at CDS (J/ApJ/850/34): table1.dat table2.dat>

Simbad objects: 101

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Number of rows : 101
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 G 131-26 ** 00 08 53.9201067097 +20 50 25.593272581   15.17 13.52 12.19 10.50 M5V 56 0
2 GR* 4 LM* 00 15 36.7136134584 -29 46 00.535738476   15.88 14.31     M4V 30 0
3 G 130-63 PM* 00 18 53.5933985838 +27 48 49.874424469   15.0   13.498   M4V 34 0
4 G 130-68 PM* 00 24 34.8806904881 +30 02 29.533960115   16.21   14.313   M5V 57 0
5 G 131-66 PM* 00 25 20.5974484367 +22 53 11.113177834   15.0   13.877   dM4.5 39 0
6 LP 525-39 ** 00 32 34.799160 +07 29 26.95704   14.189 12.823 12.253   M3Ve 46 0
7 G 69-16 PM* 00 43 35.5945443441 +28 26 41.437076321   16.11   13.4   M4V 34 0
8 G 268-47 PM* 00 47 07.9613635896 -23 30 28.148774940   15.96 14.38 14.24   M4V 25 0
9 G 32-59 PM* 00 56 38.3730143694 +17 27 34.953789072   15.37   13.355   M4V 38 0
10 G 69-47 SB* 01 05 37.6425066824 +28 29 33.572409149   16.69   13.7   M5V 74 0
11 G 269-106 PM* 01 08 18.2916889210 -28 48 20.569247286   15.13   13.160   M4V 37 0
12 G 268-131 PM* 01 09 18.7264427443 -24 30 23.683332247   16.21 14.54 14.242 11.52 M4V 24 0
13 LP 467-16 LM* 01 11 25.422648 +15 26 21.51204   16.19 14.43 14.07 11.03 M5V 94 0
14 G 159-3 PM* 01 51 04.1009130554 -06 07 04.996550751   16.290 14.49 13.00 11.16 M4.5Ve 58 0
15 V* TZ Ari PM* 02 00 12.9563198327 +13 03 07.000569241 15.406 14.100 12.298 10.943 9.195 M4.5V 325 0
16 G 3-35 SB* 02 02 44.3508665519 +13 34 33.423280141   15.6   14.460   M5V 51 0
17 G 159-46 PM* 02 12 54.6227971921 +00 00 16.856670101   15.26 13.58 12.31 10.66 M4V 71 0
18 G 74-11 PM* 02 15 34.4136763321 +33 57 41.067016441   14.9   13.276   dM4.5 35 0
19 CD-31 908 PM* 02 16 35.1068270981 -30 58 07.490866719   14.81 13.15 12.812 10.28 M3V 45 1
20 CD-31 909 PM* 02 16 41.1975294403 -30 59 18.224571845 14.729 13.588 12.027 10.885 9.406 M3Ve 75 1
21 G 36-24 PM* 02 33 37.1758784184 +24 55 37.687392269   14.66   12.730   M3.5Ve 116 0
22 G 76-62 PM* 03 09 00.1673675770 +10 01 25.650761248   16.57 14.86 14.677   M5V 54 0
23 LP 532-81 ** 03 25 42.246576 +05 51 51.80724   16.55 14.81 13.890   M4.5V 23 0
24 G 6-7 PM* 03 26 44.9602962024 +19 14 40.253011728   16.5   14.2   dM5.0 35 0
25 LP 356-106 PM* 03 28 49.5662990784 +26 29 12.338081988   15.0   13.043   M4V 41 0
26 [R78b] 233 PM* 03 36 40.8372511464 +03 29 19.531254372   15.5 13.944 13.615 10.913 M5V 48 0
27 Wolf 227 SB* 03 52 41.7518444000 +17 01 04.169729361   15.4   13.463   M5V 86 0
28 RX J0405.6+0544 ** 04 05 38.8885930772 +05 44 41.208468313   14.365 12.878 12.523 10.207 M3.5V 30 0
29 G 8-41 PM* 04 33 33.9630342177 +20 44 45.842102220   16.21 14.530 14.133 11.43 M5V 51 0
30 G 39-29 ** 04 38 12.623664 +28 12 59.91120   14.25 12.55 12.25   M4.5Ve 65 0
31 LP 476-207 SB* 05 01 58.79419 +09 58 59.2855   12.93 11.53 10.33 8.708 M3.5V 120 0
32 G 97-15 PM* 05 04 14.7584907384 +11 03 23.862062304   15.5   13.385   M5V 53 0
33 NAME BD-21 1074BC ** 05 06 49.474680 -21 35 03.77700   13.163 11.500 10.860 8.45 M3.5V 45 0
34 L 57-44 LM* 05 16 00.3515248557 -72 14 12.777309197   14.49 11.709 10.676 9.430 M2V 46 0
35 V* V371 Ori PM* 05 33 44.8000263360 +01 56 43.452872340 13.956 12.51 11.499 10.382 9.072 M3.0Ve 171 0
36 G 100-28 Er* 05 40 25.731120 +24 48 07.86312   16.74 14.94 14.71 11.04 M7V 82 0
37 G 108-22 PM* 06 42 13.3392381576 +03 35 30.888400092   11.6   10.6   M4V 25 1
38 G 109-35 PM* 06 59 28.8164986147 +19 20 55.857870053   16.78   10.6   M5.0Ve 98 0
39 LP 255-11 PM* 07 03 23.1689959080 +34 41 51.390507552   14.6   12.820   M4.0Ve 68 0
40 G 87-32 PM* 07 16 18.0178306006 +33 09 10.426680634   16.263 14.540 14.242   M5V 44 0
41 BD+27 1348 PM* 07 16 19.7716368648 +27 08 33.099029808   12.40   10.399   M3V 69 0
42 G 89-32 ** 07 36 25.118208 +07 04 43.13928   14.99 13.24 12.78   M4.5V 74 0
43 G 50-6 PM* 07 51 51.3852082308 +05 32 57.168575679   16.57   14.454   M4.5V 45 0
44 ** LDS 6210B err 07 51 54.67 -00 00 14.4   17.5   15.5   ~ 16 0
45 G 112-50 PM* 07 51 54.6712965202 -00 00 12.259020776 15.86 14.95 13.26 11.9 10.17 M4.5V 71 0
46 L 601-78 ** 07 54 54.780144 -29 20 56.10408   14.562 12.802 12.495 9.85 M4V 36 0
47 L 674-15 PM* 08 12 40.8889728169 -21 33 06.982558553   13.81 12.13 11.75 9.24 M3.5V 130 0
48 LP 725-15 PM* 08 31 23.4575310136 -10 29 53.711893609   15.9 15.0     M4V 28 0
49 V* CU Cnc SB* 08 31 37.5741841080 +19 23 39.398029332   12.83 11.809 11.592   M5Ve 237 0
50 * rho01 Cnc B PM* 08 52 40.8627422125 +28 18 58.821345244   14.80   12.814   M4.5V 177 0
51 LP 844-28 PM* 08 55 20.2375405806 -23 52 14.491259419   15.610 13.823 13.722   M4V 33 0
52 G 9-38 ** 08 58 15.061776 +19 45 46.96020   15.58   13.40   M7V+M7V 113 0
53 L 749-34 PM* 09 16 20.6444668547 -18 37 32.900856397   12.58 10.739 10.326   M2V 73 0
54 LP 313-38 LM* 09 18 41.4199530880 +26 45 52.278211412   17.4   15.79   M5Ve 24 0
55 Ross 439 PM* 09 28 53.3278275415 -07 22 15.808847773 14.774 13.627 12.104 11.044 9.726 M2.5 85 0
56 Ross 92 PM* 09 41 02.0529257173 +22 01 28.342358285   15.97   13.972   dM5.0 58 0
57 G 42-24 PM* 09 53 55.1726816646 +20 56 46.793032097   15.4   13.729   M4.0Ve 69 0
58 Wolf 330 PM* 09 55 43.5950206672 +35 21 41.769822999   14.1   12.477   M3.5Ve 46 0
59 G 49-32 PM* 09 56 26.9569645590 +22 39 01.071052347   15.7   13.817   M4V 44 0
60 G 118-43 ** 10 15 06.762792 +31 25 09.44904   15.25 13.55 13.37   M4V 18 0
61 V* CW UMa PM* 11 11 51.7407213394 +33 32 11.229919459   14.02   12.203   M3.5V 92 0
62 L 611-67 PM* 11 16 37.6329157026 -27 57 19.240373226   15.3 13.1     M3.5V 29 0
63 LP 374-39 PM* 11 23 07.9697847758 +25 53 36.841953677       14.87   M5V 37 0
64 LP 732-35 PM* 11 31 08.3872209967 -14 57 21.252043993 16.97 15.97 14.24 14.33 10.94 M4.5V 55 0
65 LP 375-25 LM* 11 43 23.5361175671 +25 18 13.578726543   15.0   13.65   M4V 38 0
66 G 10-49 PM* 11 47 40.7472267384 +00 15 20.101843571   14.94 13.34 13.35 10.506 M4V 100 0
67 G 13-22 PM* 12 14 16.5489621254 +00 37 26.362449419   15.40   13.309   M4.5Ve 98 0
68 L 617-35 LM* 13 23 38.0302990758 -25 54 45.141188089   12.9 12.89 11.68 10.11 dM5.0 53 0
69 LP 380-6 PM* 13 48 13.4121181170 +23 36 48.705882841   17.26   14.3   M5V 53 0
70 Wolf 1494 PM* 13 48 48.6060035664 +04 06 02.334496608   15.5   14.124   dM5.0 42 0
71 Ross 845 LM* 14 13 04.8612731903 -12 01 26.806941526   15.471 13.889 13.562 10.734 M5Ve 76 0
72 LP 440-38 LM* 14 32 10.8052703208 +16 00 49.315964760   15.31   13.501   M5V 48 0
73 G 136-27 PM* 14 53 37.1872833494 +11 34 12.519364434   17.11   14.4   M5V 31 0
74 G 152-8 ** 15 19 11.7389844771 -12 45 06.137795586   14.37 12.876 12.604 10.07 M4V 55 0
75 LP 684-17 PM* 16 04 19.9863535633 -06 16 45.989866302   17.4 15.51     M4.5V 24 0
76 G 138-43 PM* 16 36 05.6498769164 +08 48 49.259619643   15.44   13.480   M4V 43 0
77 LP 625-34 PM* 16 40 05.9841612432 +00 42 18.851355864   15.0   13.311   M5V 49 0
78 G 139-3 ** 16 58 25.207560 +13 58 10.77528   14.85   12.77   M4.0Ve 43 0
79 G 139-12 ** 17 07 40.854216 +07 22 06.73608 17.34 15.2   13.822   M5V 45 0
80 G 183-10 ** 17 53 00.5943555967 +16 55 03.363879705   14.32 12.77 12.36   M3.5V 34 0
81 V* V816 Her PM* 18 42 44.9786088496 +13 54 16.727572582   14.8 12.86 11.58 9.95 M5V 73 0
82 CD-23 14742 PM* 18 49 49.3637762005 -23 50 10.447375350 13.528 12.19 10.43 10.23 7.703 M3.5Ve 421 0
83 CD-32 15723 PM* 20 07 44.9749986917 -31 45 14.367216694 15.208 14.096 12.496 11.286 9.724 M4Ve 50 0
84 G 24-16 Er* 20 29 48.3179167836 +09 41 20.590506834       12.728   M4.5V 164 0
85 L 353-9 PM* 21 26 52.9102370689 -44 48 46.514706151   14.50 13.49 12.29 10.71 M3V 16 0
86 LP 397-34 BY* 21 32 22.045488 +24 33 41.77800   14.26 12.63 12.28   M4.0V 35 0
87 L 714-88 PM* 21 39 00.9280894959 -24 09 28.882509262   14.95 13.40 13.09   M4V 43 0
88 G 126-30 PM* 21 44 07.9791341136 +17 04 37.314681672   15.6   13.8   dM5.5 31 0
89 StKM 1-1950 V* 21 52 10.41792 +05 37 35.8596   13.63 12.141 11.836   M2.4V 67 0
90 LP 639-1 PM* 21 56 55.2470506518 -01 54 09.334556143   16.4 14.64     M5V 42 0
91 L 788-34 PM* 22 23 06.9968051575 -17 36 26.333040286   15.135 13.316 12.878 10.04 M4.5Ve 120 0
92 G 18-49 PM* 22 27 02.8059374808 +06 49 32.631540132   14.88   12.836   dM5.0 33 0
93 StKM 1-2018 ** 22 33 22.6593 -09 36 53.737   13.98 12.41 12.10 10.07 M3V 49 0
94 G 127-50 PM* 22 43 23.1958908499 +22 08 18.023127416   16.5   14.0   M5V 35 0
95 G 156-63 PM* 22 54 46.547880 -05 28 28.46712       13.61 11.21 M4V 34 0
96 G 68-5 LM* 23 17 28.1434392636 +19 36 47.216769536   13.69   11.627   M2V 69 0
97 G 273-59 LM* 23 30 13.4374314039 -20 23 27.458861538 13.686 12.582 11.108 10.835 8.599 M2Ve 91 0
98 G 157-77 PM* 23 35 10.4624266947 -02 23 20.613547105   16.60 14.69 14.447   M5.0Ve 126 0
99 G 273-130 ** 23 45 31.279776 -16 10 19.40016   15.7   14.161   M5V 42 0
100 G 275-106 SB* 23 48 36.0554902893 -27 39 38.928690183   13.948 12.34 11.25 9.88 M2.5V 46 0
101 LP 704-15 ** 23 57 20.5800973176 -12 58 48.849843288   14.609 13.018 12.818 10.12 M3V 48 1

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