2016ApJ...818..155B

Query : 2016ApJ...818..155B

2016ApJ...818..155B - Astrophys. J., 818, 155 (2016/February-3)

The ELM survey. VII. Orbital properties of low-mass white dwarf binaries.

BROWN W.R., GIANNINAS A., KILIC M., KENYON S.J. and ALLENDE PRIETO C.

Abstract (from CDS):

We present the discovery of 15 extremely low-mass (5 < log g < 7) white dwarf (WD) candidates, 9 of which are in ultra-compact double-degenerate binaries. Our targeted extremely low-mass Survey sample now includes 76 binaries. The sample has a lognormal distribution of orbital periods with a median period of 5.4 hr. The velocity amplitudes imply that the binary companions have a normal distribution of mass with 0.76 M☉ mean and 0.25 M☉dispersion. Thus extremely low-mass WDs are found in binaries with a typical mass ratio of 1:4. Statistically speaking, 95% of the WD binaries have a total mass below the Chandrasekhar mass, and thus are not type Ia supernova progenitors. Yet half of the observed binaries will merge in less than 6 Gyr due to gravitational wave radiation; probable outcomes include single massive WDs and stable mass transfer AM CVn binaries.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - Galaxy: stellar content - white dwarfs

VizieR on-line data: <Available at CDS (J/ApJ/818/155): table3.dat table4.dat table5.dat>

Simbad objects: 89

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Number of rows : 89
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 GALEX J002207.6-101423 WD* 00 22 07.6572581736 -10 14 23.555210532           DA 24 0
2 GALEX J002228.3+003115 WD* 00 22 28.4509588368 +00 31 15.527797320           DA 19 0
3 GALEX J005648.1-061141 WD* 00 56 48.2217929184 -06 11 41.557821792   17.2   17.6   D 13 0
4 SDSS J010657.39-100003.3 HS* 01 06 57.4035165312 -10 00 03.303934740   19.5   19.5   sdB 28 1
5 GALEX J011210.2+183503 WD* 01 12 10.2534117096 +18 35 03.827993856   17.0   17.5   DA 21 0
6 SDSS J012516.75+201744.6 WD* 01 25 16.7562851304 +20 17 44.700145332   17.1   17.4   D 2 0
7 GALEX J015213.7+074913 WD* 01 52 13.7776613904 +07 49 14.106768816           DA 14 0
8 ATO J047.0757+51.6698 WD* 03 08 18.1872977040 +51 40 11.623716948   16.70 15.54 15.32   DAZ 9 0
9 LP 413-40 WD* 03 45 16.8306937296 +17 48 08.702047980   17.1   16.3   DA 74 0
10 GALEX J065133.3+284424 WD* 06 51 33.3404753832 +28 44 23.448959772           DAH 87 0
11 GALEX J073032.7+170356 WD* 07 30 32.9006719680 +17 03 57.087855540   20.0   20.1   DAH 9 0
12 GALEX J074511.5+194925 WD* 07 45 11.5697202720 +19 49 26.598323604   16.5   15.55   DA 16 0
13 GALEX J075141.1-014121 WD* 07 51 41.1768601008 -01 41 20.957784072   17.4   17.4   D 28 0
14 GALEX J075519.4+480033 WD* 07 55 19.4755767912 +48 00 34.060709988           DA 24 0
15 GALEX J075552.6+490628 WD* 07 55 52.4084306208 +49 06 27.943481232   20.8       DA 17 0
16 GALEX J075610.6+670424 WD* 07 56 10.7085051600 +67 04 24.802093344   16.11 16.42     DBAZ 12 0
17 SDSS J080250.13-095549.8 WD* 08 02 50.1368106408 -09 55 49.832443848   19.1   19.4   D 10 0
18 SDSS J080653.30-090511.5 WD* 08 06 53.3095062624 -09 05 11.484124368   18.8   18.0   D 2 0
19 GALEX J081133.4+022558 WD* 08 11 33.5581506048 +02 25 56.750675124           D 15 0
20 GALEX J081544.2+230906 HS* 08 15 44.2428837840 +23 09 05.055656148   18.7   18.6   sdB 19 1
21 GALEX J081822.4+353620 WD* 08 18 22.3396737192 +35 36 18.922231116   20.8   19.9   DA 17 0
22 SDSS J082212.57+275307.4 WD* 08 22 12.5767704408 +27 53 07.503424512           DA 31 0
23 GALEX J082511.9+115236 WD* 08 25 11.9032540704 +11 52 36.435746496           DA 18 0
24 GALEX J083708.3+664838 WD* 08 37 08.5099270200 +66 48 37.210800528   17.8   18.4   DA 6 0
25 GALEX J084037.6+152707 WD* 08 40 37.5714527184 +15 27 04.556730564   19.9   19.6   DA 10 0
26 GALEX J084523.0+162457 WD* 08 45 23.0331527640 +16 24 57.546435528           DA 11 0
27 SDSS J084910.13+044528.7 WD* 08 49 10.1295863640 +04 45 28.707340572   19.0   19.5   DA 29 0
28 GALEX J090052.0+023414 WD* 09 00 52.0439431896 +02 34 13.879420428   17.7   18.1   DA 9 0
29 SDSS J091709.55+463821.8 WD* 09 17 09.5538167784 +46 38 21.666153876           DA 38 0
30 CBS 6 WD* 09 23 45.6023056776 +30 28 05.083240368   16       DA2.7 47 0
31 US 738 WD* 09 35 06.9270091560 +44 11 06.938394720   17.7   17.8   DA+M 38 0
32 SDSS J094008.71+630427.7 WD* 09 40 08.7334324128 +63 04 27.463613988           D 6 0
33 GALEX J100548.1+054204 WD* 10 05 48.0941269128 +05 42 04.416234264           DA 11 0
34 SDSS J100554.05+355014.2 WD* 10 05 54.0533987568 +35 50 14.383547016           D 11 0
35 GALEX J101707.1+121757 WD* 10 17 07.1073547416 +12 17 57.459535836   18.1   17.6   D 3 0
36 SDSS J103953.12+164524.3 WD* 10 39 53.1153559824 +16 45 24.273414216           DA 8 0
37 2QZ J104607.8-015359 WD* 10 46 07.8703094256 -01 53 58.454915640   18.0   18.5   DA 10 0
38 GALEX J105353.8+520031 WD* 10 53 53.9102986512 +52 00 31.033370736           DA 35 0
39 GALEX J105435.7-212155 WD* 10 54 35.7906634080 -21 21 55.980468396   19.0   18.8   DAZ 7 0
40 GALEX J105610.9+653631 WD* 10 56 11.0245152024 +65 36 31.526253072   20.0   19.6   DA 23 0
41 HS 1102+0934 WD* 11 04 36.7495773072 +09 18 22.842050364   16.9   16.5   DA 27 0
42 GALEX J110815.5+151246 WD* 11 08 15.5179658688 +15 12 46.756229364   19.6   19.4   DA 8 0
43 GALEX J111215.8+111745 WD* 11 12 15.8349560304 +11 17 45.120382836   16.54 16.31 16.2   DA 29 0
44 GALEX J112823.4+174355 WD* 11 28 23.3358451080 +17 43 54.518294028           D 4 0
45 SDSS J113017.45+385550.1 WD* 11 30 17.4624307104 +38 55 50.079541260   19.4   20.0   DA 8 0
46 GALEX J113027.9+093303 WD* 11 30 27.9567252504 +09 33 03.591035064   17.1   17.0   D 3 0
47 GALEX J114155.7+385004 WD* 11 41 55.5597679320 +38 50 03.088472928           D 21 0
48 GALEX J115138.4+585855 WD* 11 51 38.3886635472 +58 58 53.378412132   20.4       D 10 0
49 SDSS J115734.45+054645.4 WD* 11 57 34.4574153336 +05 46 45.560960292   19.9   19.9   D 14 0
50 GALEX J123316.2+160204 WD* 12 33 16.1976126360 +16 02 04.725298968   20.4   19.6   DA 19 0
51 GALEX J123410.3-022803 WD* 12 34 10.3676638032 -02 28 02.806799988   17.7   18.4   DA 40 0
52 GALEX J123800.0+194631 HB* 12 38 00.1052275056 +19 46 31.626561432           B 20 0
53 SDSS J124124.29+063351.0 WD* 12 41 24.2995291296 +06 33 51.150775284   17.8   17.9   D 4 0
54 LAMOST J124943.56+262604.5 WD* 12 49 43.5700515984 +26 26 04.275058272   16.1   15.9   DAZ 8 0
55 PB 4146 ** 13 55 12.343 +19 56 45.64   16.1   16.18   D 8 0
56 GALEX J142200.8+435253 WD* 14 22 00.7422058440 +43 52 53.029934508           DA 16 0
57 SBSS 1434+503 WD* 14 36 33.2892435360 +50 10 26.924868192   18.0       DA 40 0
58 GALEX J143948.4+100222 WD* 14 39 48.4027117656 +10 02 21.732994284   19.0   18.5   DA 15 0
59 GALEX J144342.7+150939 WD* 14 43 42.7569449112 +15 09 38.945662092   18.5   18.6   DA 18 0
60 GALEX J144801.1+134232 WD* 14 48 01.1219546280 +13 42 32.772038544           DA 13 0
61 GALEX J144957.2+171729 WD* 14 49 57.1597319808 +17 17 29.345441928   17.9   18.1   DA 7 0
62 GALEX J151225.6+261539 WD* 15 12 25.6998135816 +26 15 38.475138564   20.1   19.9   DA 15 0
63 GALEX J151802.6+135433 WD* 15 18 02.5675894080 +13 54 31.998167892   20.0   19.2   D 3 0
64 GALEX J151826.7+065814 WD* 15 18 26.6907090120 +06 58 13.261800468           DA 31 0
65 GALEX J152651.6+054336 WD* 15 26 51.5727561624 +05 43 35.383108656   18.9   19.1   DAZ 7 0
66 GALEX J153844.2+025210 WD* 15 38 44.2208518056 +02 52 09.581478636   18.4   19.0   D 11 0
67 GALEX J155502.0+244421 WD* 15 55 02.0040464904 +24 44 22.120195524           DA+M 16 0
68 GALEX J155708.5+282336 WD* 15 57 08.4830623752 +28 23 36.057237324           DA 22 0
69 GALEX J161431.2+191219 WD* 16 14 31.2888356856 +19 12 19.463673528       16.30   DA 16 0
70 GALEX J161722.5+131018 WD* 16 17 22.5112770648 +13 10 18.851317608   19.5   18.9   DA 8 0
71 GALEX J162542.1+363218 WD* 16 25 42.1085895240 +36 32 19.082515344           DA 22 0
72 GALEX J163026.0+271226 WD* 16 30 26.0939235024 +27 12 26.553728484   20.5   19.8   DA 14 0
73 SDSS J163030.58+423305.7 WD* 16 30 30.5861975760 +42 33 05.778895032   19.2   19.3   DA 31 0
74 GALEX J163123.7+060533 WD* 16 31 23.6749389144 +06 05 33.899807040   20.2   19.5   D 6 0
75 GALEX J173521.8+213440 WD* 17 35 21.6921885552 +21 34 40.607372784   16.18 16.19     D 7 0
76 PSR J1738+0333 Psr 17 38 53.966386 +03 33 10.87200           ~ 158 1
77 GALEX J174140.5+652638 WD* 17 41 40.4935342416 +65 26 38.700436884   18.3   19.2   DA 23 0
78 GALEX J184038.0+642313 WD* 18 40 37.7911925616 +64 23 12.272542224   18.6   19.4   DA 34 0
79 SDSS J210308.79-002748.9 WD* 21 03 08.7939332376 -00 27 48.887759196           DA 15 0
80 GALEX J211921.9-001824 WD* 21 19 21.9636760056 -00 18 25.833784356   20.0   20.2   DA 19 0
81 GALEX J213228.3+075428 WD* 21 32 28.3625599560 +07 54 28.271598012   18.1   17.0   D 13 0
82 GALEX J213907.4+222709 WD* 21 39 07.4149715832 +22 27 08.942771808   16.25 15.91     D 4 0
83 GALEX J215159.1+161448 WD* 21 51 59.1864770544 +16 14 48.667458804   16.1   16.2   DA 5 0
84 SDSS J222859.93+362359.6 WD* 22 28 59.9311926768 +36 23 59.634736656   16.9   16.7   DA 17 0
85 LP 400-22 WD* 22 36 30.0130703280 +22 32 23.662277484   17.5   17.1   DA+DA 43 1
86 GALEX J225242.2-005626 WD* 22 52 42.2588149296 -00 56 26.720974968           DA 20 0
87 GALEX J230919.9+260348 WD* 23 09 19.9083622368 +26 03 46.688366196   19.4   18.9   D 5 0
88 GALEX J233821.4-205222 WD* 23 38 21.4958534472 -20 52 22.838599020   20.4   19.7   D 9 0
89 GALEX J234536.4-010204 WD* 23 45 36.4775895144 -01 02 04.938594504           DA 20 0

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