2007AJ....133..971A

Query : 2007AJ....133..971A

2007AJ....133..971A - Astron. J., 133, 971-978 (2007/March-0)

A new brown dwarf desert? A scarcity of wide ultracool binaries.

ALLEN P.R., KOERNER D.W., McELWAIN M.W., CRUZ K.L. and REID I.N.

Abstract (from CDS):

We present the results of a deep-imaging search for wide companions to low-mass stars and brown dwarfs using NSFCam on the Infrared Telescope Facility. We searched a sample of 132 M7-L8 dwarfs to magnitude limits of J∼20.5 and K∼18.5, corresponding to secondary-to-primary mass ratios of ∼0.5. No companions were found with separations between 2'' and 31'' (∼40 to ∼1000 AU). This null result implies a wide companion frequency below 2.3% at the 95% confidence level within the sensitivity limits of the survey. Preliminary modeling efforts indicate that we could have detected 85% of companions more massive than 0.05 M☉and 50% above 0.03 M☉.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Low-Mass, Brown Dwarfs

VizieR on-line data: <Available at CDS (J/AJ/133/971): table1.dat table2.dat>

Simbad objects: 141

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Number of rows : 141
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 2MASS J00103250+1715490 LM* 00 10 32.4624995112 +17 15 48.939679440           M8e 6 0
2 2MASSW J0015447+351603 BD* 00 15 44.7745521624 +35 16 02.641954548           L1.0V 49 0
3 2MASSI J0028394+150141 BD* 00 28 39.43224 +15 01 41.8620           L4.5V 24 0
4 2MASSW J0030300-145033 BD* 00 30 30.13224 -14 50 33.3960           L7V 52 0
5 LSPM J0036+1821 BD* 00 36 16.1118891182 +18 21 10.286665966       18.451 16.053 L3.5 230 0
6 2MASSW J0051107-154417 BD* 00 51 10.7916886128 -15 44 16.952460180       21.344 18.898 L6 24 0
7 SIPS J0058-0651 BD* 00 58 42.5485933944 -06 51 24.034791564         17.671 L0V 37 0
8 2MASSI J0103320+193536 BD* 01 03 32.03712 +19 35 36.1824           L6V 93 0
9 2MASS J01043768+1457242 LM* 01 04 37.7163774072 +14 57 24.190715556           M8e 9 0
10 2MASS J01051903+1407408 LM* 01 05 19.0669293432 +14 07 40.854529488           M7e 6 0
11 2MASSW J0109216+294925 LM* 01 09 21.8736923288 +29 49 26.438975019           M9.5 22 0
12 2MASS J01300580+1721434 LM* 01 30 05.8067896992 +17 21 43.539604992           M8 6 0
13 2MASSW J0135358+120522 BD* 01 35 35.8627575329 +12 05 21.890837649           L1.5V 23 0
14 LSPM J0140+2701 LM* 01 40 02.6489554032 +27 01 50.012455728   20.1   18.3   M8.5V 28 0
15 2MASSW J0205034+125142 BD* 02 05 03.44232 +12 51 42.2316           L5V 37 0
16 2MASSW J0208236+273740 BD* 02 08 23.63616 +27 37 40.0872           L5V 19 0
17 2MASSW J0208549+250048 BD* 02 08 54.99936 +25 00 48.8196           L5V 14 0
18 2MASSI J0224367+253704 BD* 02 24 36.70008 +25 37 04.2852           L2V 8 0
19 LSPM J0240+2832 LM* 02 40 29.5150286088 +28 32 57.180273108   21.0   18.5   M7.5e 12 0
20 LSPM J0253+2713 LM* 02 53 20.3442759283 +27 13 33.497212433   20.8   18.4   M8.0V 21 0
21 2MASSW J0306268+154514 BD* 03 06 26.84688 +15 45 13.7952           L6.0:V 7 0
22 2MASSW J0309088-194938 BD* 03 09 08.88648 -19 49 38.7660           L4.5V 10 0
23 2MASS J03261367+2950152 BD* 03 26 13.6837078464 +29 50 15.242172504           L3.5V 21 0
24 2MASSI J0328426+230205 BD* 03 28 42.65592 +23 02 05.1900           L9.5 50 0
25 2MASS J03303511-0025346 BD* 03 30 35.1445125920 -00 25 34.960388420           L2 27 0
26 2MASSW J0337036-175807 BD* 03 37 03.59592 -17 58 07.9068           L4.5V 27 0
27 LP 413-53 LM* 03 50 57.3984540384 +18 18 06.725620584   21.3   19.2   M9.0V 41 0
28 2MASS J03554191+2257016 BD* 03 55 41.91504 +22 57 01.6776           L3V 23 0
29 2MASSI J0409095+210439 BD* 04 09 09.5262079320 +21 04 39.128144556           L3V 20 0
30 Ross 29 ** 04 13 10.129488 +50 31 41.38500   15.20 13.47 13.23   M4V 41 0
31 2MASS J04132039-0114248 BD* 04 13 20.3828490528 -01 14 24.919544328           L0.5V 12 0
32 SIPS J0539-0059 BD* 05 39 52.0040375405 -00 59 01.491092352           L5V 95 0
33 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 549 0
34 2MASS J06523073+4710348 BD* 06 52 30.7182715296 +47 10 34.926594456           L5.0 50 0
35 2MASSW J0708213+295035 BD* 07 08 21.33240 +29 50 35.0628           L5V 9 0
36 2MASSW J0740096+321203 BD* 07 40 09.66720 +32 12 03.2436           L4.5V 15 0
37 LSPM J0746+2000 BD* 07 46 42.56207 +20 00 32.1839       17.9 15.034 L0+L1.5 201 1
38 2MASSI J0753321+291711 BD* 07 53 32.1505030752 +29 17 11.752093356           L2V 20 0
39 2MASSI J0756252+124456 BD* 07 56 25.29120 +12 44 56.0868           L6V 13 0
40 2MASSW J0801405+462850 BD* 08 01 40.56240 +46 28 49.8396           L6.5V 23 0
41 2MASSI J0810586+142039 LM* 08 10 58.6477635000 +14 20 38.777134380     19.6     M8V 26 0
42 2MASSW J0820299+450031 BD* 08 20 29.96136 +45 00 31.5180           L5V 28 0
43 2MASSI J0825196+211552 BD* 08 25 19.6125672818 +21 15 51.549358145       21.97 19.22 L7.5V 138 0
44 2MASSI J0829066+145622 BD* 08 29 06.6330180360 +14 56 22.028955756           L2V 33 0
45 2MASSW J0829570+265510 BD* 08 29 57.07872 +26 55 09.9408           L6.5V 19 0
46 2MASSW J0832045-012835 BD* 08 32 04.5196565736 -01 28 36.042229668           L1.5V 36 0
47 2MASS J08564793+2235182 BD* 08 56 47.9153673048 +22 35 18.292009308           L3 26 0
48 DENIS J090957.1-065806 BD* 09 09 57.4806647448 -06 58 18.655430772     19.2     L0.2V 46 0
49 2MASS J09141884+2238134 LM* 09 14 18.8250419376 +22 38 13.234553916           M9.5V 6 0
50 2MASSW J0918382+213406 BD* 09 18 38.15736 +21 34 05.8188           L2.5V 18 0
51 LP 427-38 LM* 09 25 34.8134308104 +17 04 41.570434956   19.9   17.7   M7e 12 0
52 2MASSW J0928397-160312 BD* 09 28 39.7034471904 -16 03 12.778238880           L2V 24 0
53 2MASSW J0929336+342952 BD* 09 29 33.64992 +34 29 52.7496           L8V 27 0
54 2MASSW J0944027+313132 BD* 09 44 02.7924712776 +31 31 32.781726984           L2V 18 0
55 2MASS J10170754+1308398 BD* 10 17 07.5535371936 +13 08 39.784300548         17.418 L1.5+L3 34 0
56 2MASSI J1029216+162652 BD* 10 29 21.7029071994 +16 26 51.900922557       19.588 17.600 L2.5 43 0
57 2MASSW J1035246+250745 BD* 10 35 24.5190408172 +25 07 44.589716437           L1V 24 0
58 DENIS J104731.1-181558 BD* 10 47 31.0599420025 -18 15 57.443393498           L0.3V 31 0
59 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
60 2MASSW J1102337-235945 BD* 11 02 33.75144 -23 59 46.4028           L4.5V 9 0
61 2MASS J11040127+1959217 BD* 11 04 01.2774943824 +19 59 21.714139176           L4 50 0
62 HD 97334B BD* 11 12 25.6353966120 +35 48 12.742807176           L4.5+L6 95 0
63 2MASSW J1123556+412228 BD* 11 23 55.64856 +41 22 28.6284           L2.5V 8 0
64 2MASSW J1145572+231730 BD* 11 45 57.1458774144 +23 17 29.661415260           L1.5V 33 0
65 2MASS J11463449+2230527 BD* 11 46 34.5341033040 +22 30 54.036482400           L3+L4 94 0
66 2MASS J11550087+2307058 BD* 11 55 00.8851003272 +23 07 06.421018152           L4V 26 0
67 DENIS J115938.4+005727 BD* 11 59 38.4904404552 +00 57 26.708696496         17.411 L0.4V 32 0
68 2MASS J12035812+0015500 BD* 12 03 58.1345813415 +00 15 50.101214352           L5.0V 47 1
69 TWA 27 LM* 12 07 33.4675524840 -39 32 54.016625184     19.95 17.99 15.88 M8IVe 376 0
70 2MASS J12130336-0432437 BD* 12 13 03.3425411711 -04 32 43.748365858           L4.2V 33 0
71 2MASS J12185957-0550282 PM* 12 18 59.5574551008 -05 50 28.277979828       19.459 16.885 M8.5 9 0
72 2MASS J12391934+2029519 LM* 12 39 19.3566181176 +20 29 51.905452092           M9V 12 0
73 2MASSW J1239272+551537 BD* 12 39 27.27287 +55 15 37.1630           L5V 47 0
74 2MASSW J1246467+402715 BD* 12 46 46.7805320592 +40 27 15.003066816           L4V 29 0
75 2MASS J12543696+2538509 LM* 12 54 36.9550691160 +25 38 51.023154840           M7.5V 7 0
76 2MASP J1256227+283047 PM* 12 56 22.8480235104 +28 30 46.620918252           M7.5V 6 0
77 2MASSI J1300425+191235 BD* 13 00 42.5082106014 +19 12 34.598653499         15.9 L1.7V 64 0
78 2MASS J13233597-1806379 BD* 13 23 35.9696652432 -18 06 37.951163460           L0.0V 10 0
79 2MASS J13262981-0038314 BD* 13 26 29.81880 -00 38 31.4880           L5.5V 48 0
80 2MASS J13285503+2114486 BD* 13 28 55.03776 +21 14 48.6024           L5V 27 0
81 2MASSI J1332286+263508 BD* 13 32 28.63008 +26 35 07.9656           L2V 7 0
82 2MASSW J1338261+414034 BD* 13 38 26.1320634247 +41 40 33.557435164           L2.5V 22 0
83 2MASSW J1343167+394508 BD* 13 43 16.160880 +39 45 10.47204           L5V 21 0
84 LSPM J1403+3007 LM* 14 03 22.2897125655 +30 07 54.645699901   21.0   18.8   M9V 39 0
85 2MASSW J1411175+393636 BD* 14 11 17.3860488137 +39 36 36.417885266           L1.5V 28 0
86 2MASSW J1412244+163312 BD* 14 12 24.4909341216 +16 33 11.716732440       19.449 17.258 L0.5V 34 0
87 2MASSW J1421314+182740 BD* 14 21 31.4165076452 +18 27 40.515517221           L0.0 31 0
88 2MASSI J1426316+155701 LM* 14 26 31.6133387736 +15 57 01.066079268       18.320 15.819 M9V 32 0
89 2MASS J14304358+2915405 BD* 14 30 43.5734270640 +29 15 40.718334672           L1.5V 23 0
90 LSPM J1438+6408 BD* 14 38 08.2687791785 +64 08 36.312075315       18.8   L0.2V 32 1
91 2MASSW J1438549-130910 BD* 14 38 55.0122400992 -13 09 10.417109076           L3.1V 14 0
92 2MASSW J1439409+182637 BD* 14 39 40.92911 +18 26 36.9744           L1V 11 0
93 2MASS J14401622+0026390 BD* 14 40 16.1982584568 +00 26 39.334871688           L3V 10 0
94 LP 326-21 LM* 14 44 17.1771536455 +30 02 14.229564188   20.0   17.8   M8e 32 0
95 2MASSW J1449378+235537 BD* 14 49 37.8493181976 +23 55 37.884727668           L0V 16 0
96 GJ 570 D BD* 14 57 14.96256 -21 21 47.7504           T8 242 1
97 2MASSI J1457396+451716 LM* 14 57 39.6204300432 +45 17 16.784630664           M9e 15 0
98 2MASSW J1506544+132106 BD* 15 06 54.3299045806 +13 21 06.039351151           L3 116 0
99 SIPS J1515-0030 PM* 15 15 47.1952356360 -00 30 59.638966416           M7 9 0
100 2MASSI J1526140+204341 BD* 15 26 14.0097630623 +20 43 40.439684259           L5 46 0
101 2MASSI J1546054+374946 PM* 15 46 05.4098698968 +37 49 45.887257992       18.05   M7.5V 23 0
102 LSPM J1550+3041 LM* 15 50 38.1839209872 +30 41 03.962611896   20.7   18.1   M7V 20 0
103 LSPM J1551+6457 LM* 15 51 06.6061719432 +64 57 04.748575284       19.2   M8.5e 14 0
104 2MASS J15531993+1400337 LM* 15 53 19.8461367036 +14 00 33.866353596       18.570 16.136 M9e 15 0
105 2MASSI J1600054+170832 BD* 16 00 05.4775186992 +17 08 32.725071672           L1.5V 15 0
106 2MASSW J1615441+355900 BD* 16 15 44.1554776882 +35 58 59.573277980           L3V 45 0
107 2MASS J16192830+0050118 BD* 16 19 28.3072188144 +00 50 11.665434732           L1.3V 23 1
108 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
109 2MASSI J1635191+422305 LM* 16 35 19.1899780152 +42 23 05.262774432           M9V 16 1
110 2MASS J16360078-0034525 BD* 16 36 00.78528 -00 34 52.5576           L0e 18 0
111 2MASSI J1656188+283506 BD* 16 56 18.85416 +28 35 05.6688           L4.5V 7 0
112 LSPM J1707+6439 PM* 17 07 18.3079222344 +64 39 33.182952120   21.7   18.8   M9V 36 0
113 2MASS J17073334+4301304 BD* 17 07 33.3378590424 +43 01 30.259773084           L0.5 26 0
114 2MASS J17102545+2107155 LM* 17 10 25.4603354208 +21 07 15.313953360           M8V 5 0
115 2MASSI J1711457+223204 BD* 17 11 45.73344 +22 32 04.4052           L5.0+T5.5 40 0
116 2MASSI J1726000+153819 BD* 17 26 00.07752 +15 38 19.0140           L2V 49 0
117 2MASSW J1728114+394859 BD* 17 28 11.50056 +39 48 59.3100           L5+L6.5 65 0
118 2MASS J17331893+4633593 LM* 17 33 18.9384159384 +46 33 59.248987740           M9.5V 16 0
119 2MASSI J1743348+584411 LM* 17 43 34.8765075504 +58 44 10.509659556           M9.5 7 0
120 LSPM J1750+4424 LM* 17 50 12.9048979032 +44 24 04.388509332   21.0   18.8   M6.5+M8.5 26 0
121 2MASSW J1841086+311727 BD* 18 41 08.61480 +31 17 27.9600           L4Vpec 22 0
122 HD 180617 PM* 19 16 55.2565688720 +05 10 08.040554168 11.768 10.63 9.115 8.076 6.782 M3-V 475 0
123 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1
124 SIPS J2049-1944 LM* 20 49 19.7504586496 -19 44 32.750924046       17.850 15.449 M7.5e 24 0
125 2MASSI J2054358+151904 BD* 20 54 35.85312 +15 19 04.3500           L0.3V 11 0
126 2MASSI J2057153+171515 BD* 20 57 15.38664 +17 15 15.4008           L1.5V 12 0
127 2MASS J21402931+1625183 ** 21 40 29.3219106816 +16 25 18.097174704         15.36 M8+M9.5 35 0
128 ** BOY 12 LM* 21 47 43.6526221656 +14 31 31.439372700           M8e 9 0
129 SIPS J2147-2644 LM* 21 47 44.6030732376 -26 44 06.752706864       18.246 15.767 M7.5e 7 0
130 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 176 1
131 2MASSW J2206228-204705 SB* 22 06 22.8297746064 -20 47 06.597790152     19.788 17.452 14.877 M8.0V 50 0
132 2MASSW J2208136+292121 BD* 22 08 13.63056 +29 21 21.5352           L3gamma 62 0
133 2MASS J22215313+1158222 LM* 22 21 53.1526796856 +11 58 22.162254528           M8V 10 0
134 2MASSW J2224438-015852 BD* 22 24 43.8544128559 -01 58 53.284975671           L4.5V 150 0
135 2MASS J22341394+2359559 LM* 22 34 14.0191104024 +23 59 55.879228988           M9.5e 26 0
136 2MASS J22443167+2043433 BD* 22 44 31.67376 +20 43 43.3020           L6-L8gamma 114 0
137 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0
138 NAME HD 221356BC ** 23 31 01.6270258272 -04 06 19.516808592       19.2 15.51 M8.0V+L3.0V 34 0
139 2MASS J23343945+1933041 LM* 23 34 39.4170141240 +19 33 04.028228064           M8e 10 0
140 2MASS J23473680+2702068 LM* 23 47 36.8499685619 +27 02 06.914405215           M9e 12 0
141 LP 523-55 LM* 23 49 48.9971841720 +12 24 38.418682284   20.7   18.5   M8.0V 30 0

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