2003ApJ...591.1064B

Query : 2003ApJ...591.1064B

2003ApJ...591.1064B - Astrophys. J., 591, 1064-1074 (2003/July-2)

A search for close binaries in the ρ Ophiuchi star-forming region.

BARSONY M., KORESKO C. and MATTHEWS K.

Abstract (from CDS):

We have carried out a new, near-infrared speckle imaging survey of 19 members of the young stellar population in the nearby (d=140 pc) ρ Oph cloud core.
Result. for four binary and one newly discovered triple system are reported. Data for all known multiple systems among the pre-main-sequence population of ρ Oph are tabulated. We define a restricted binary fraction, Fb,r, and a restricted companion fraction, Fc,r, as counting only those systems most detectable in the present and previous high-resolution near-infrared imaging surveys having separations between 0".1 and ∼1".1 and K-band magnitude differences ΔK<3. Analysis of all the available multiplicity data results in updated values of Fb,r=24%±11% and Fc,r=24%±11% for the Ophiuchus pre-main-sequence population. These values are consistent with the values in the Taurus star-forming region, and Fc,ris in excess by a factor of 2 relative to the main sequence at the 1 σ level.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Infrared: Stars - Stars: Pre-Main-Sequence - Techniques: High Anular Resolution

Simbad objects: 114

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Number of rows : 114
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 HD 142361 TT* 15 54 59.8695458688 -23 47 18.180029616   9.68 8.960   8.092 G3V 74 0
2 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
3 2MASS J16184960-2632533 TT* 16 18 49.6001558928 -26 32 53.143533816   16.9       ~ 17 0
4 WSB 4 ** 16 18 50.35560 -26 10 09.2100           M3.5e+M3e 15 0
5 WSB 11 TT* 16 21 57.4097168712 -22 38 18.700548792           M4.75 21 0
6 2MASS J16233483-2340303 Y*O 16 23 34.7907768192 -23 40 29.954540064   16.9       K8 24 0
7 WSB 18 TT* 16 24 59.74128 -24 56 00.8340   18.9   15.71 13.78 M2.5-M4.5 42 0
8 IRAS 16220-2452 TT* 16 25 02.115744 -24 59 32.40528       14.64 13.12 M3-M5.5 47 0
9 Haro 1-4 Or* 16 25 10.508136 -23 19 14.78820       13.15   K4e 78 0
10 CD-24 12683 TT* 16 25 19.2498737256 -24 26 52.809731340   11.36 10.55   9.05 G9V 52 0
11 HD 147889 Or* 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 512 1
12 EM* SR 22 Or* 16 25 24.3512329440 -24 29 44.379021480       14.52 12.88 M0e 74 0
13 ATO J246.3514-23.9197 TT* 16 25 24.3632877288 -23 55 10.614768528   17.03 15.39     ~ 33 0
14 YLW 19 Or* 16 25 36.7381317840 -24 15 42.526380780   17.8 16.4 14.94 13.36 K3-K5 52 0
15 YLW 23 * 16 25 49.0544564448 -24 31 39.138611304           ~ 13 0
16 ROX 3 Or* 16 25 49.6474658424 -24 51 31.947148440     13.10 12.10 11.13 M0e 59 0
17 WLY 2-10 TT* 16 25 50.5247210760 -24 39 14.565244608     15.49 13.83 12.30 K5.5 48 0
18 EM* SR 5 TT* 16 25 55.8341340336 -23 55 10.314211224   14.0 13.72 12.52 11.51 ~ 19 0
19 EM* SR 4 Or* 16 25 56.1659023848 -24 20 48.240627072     12.80 11.7 10.7 K0:Ve 216 1
20 GSS 20 TT* 16 25 57.5183458272 -24 30 31.792496832     16.37 14.77 13.05 K5.5 60 0
21 Haro 1-6 Or* 16 26 03.0276684144 -24 23 36.188140848   14.15 14.01 12.38 10.80 K0 229 2
22 EM* SR 3 Or* 16 26 09.3229222944 -24 34 12.172009728   10.9 9.88   9.01 A0 126 0
23 GSS 26 Y*O 16 26 10.33152 -24 20 54.8232           M0 94 1
24 GSS 29 TT* 16 26 16.8561896376 -24 22 23.150221356       17.4 15.23 K5-K6 93 1
25 DoAr 24 TT* 16 26 17.0743951968 -24 20 21.594730920   16.06 14.21 14.02 11.57 K7.5V 126 1
26 Haro 1-5 TT* 16 26 18.413736 -25 20 55.87404           ~ 20 0
27 Elia 2-20 TT* 16 26 18.8775818016 -24 28 19.695035064           ~ 140 1
28 BKLT J162620-240854 TT* 16 26 20.9876547816 -24 08 51.872620308     16.52 14.87 13.11 M2 40 0
29 GSS 30 Y*O 16 26 21.38160 -24 23 04.0524           ~ 223 1
30 GSS 31 TT* 16 26 23.3684537424 -24 20 59.579380248   15.9 14.70 14.33 11.53 K0e 154 1
31 [GY92] 21 Y*O 16 26 23.57976 -24 24 39.4956           K7 80 2
32 DoAr 25 TT* 16 26 23.6911292736 -24 43 13.888543800       12.65   K5 201 0
33 ROXs 9A * 16 26 23.9777612832 -25 47 16.322036784           ~ 4 0
34 GSS 32 TT* 16 26 24.0509462472 -24 24 48.095495928       17.81 15.58 K5-K6 115 1
35 Elia 2-24 TT* 16 26 24.0886188024 -24 16 13.448569260   16.3 14.40 15.81 13.97 K6 208 1
36 VSSG 27 Y*O 16 26 30.46896 -24 22 57.1440           M 64 1
37 ROXs 9B * 16 26 30.7042800672 -25 43 40.074949560           ~ 4 0
38 GSS 35 TT* 16 26 34.1761719864 -24 23 28.283473860     16.53 14.75 12.51 B3 254 1
39 DoAr 26 Em* 16 26 34.8987286607 -23 45 40.579943543   16.9       ~ 15 0
40 TYC 6798-319-1 * 16 26 37.9395839256 -25 45 13.082289048   12.79 11.71     ~ 5 0
41 [GY92] 93 TT* 16 26 41.2666088952 -24 40 17.881012092       15.41 13.37 M5 65 0
42 GSS 37 TT* 16 26 42.85416 -24 20 29.8608       16.29 14.08 K7-M2 87 1
43 YLW 37 TT* 16 26 46.4288834880 -24 12 00.078675192   17.15   13.90 12.37 G3.5 65 0
44 WL 2 Y*O 16 26 48.48624 -24 28 38.9064           ~ 64 1
45 WL 18 TT* 16 26 48.9809680488 -24 38 25.152593208       19.33 17.38 M3.5 77 0
46 VSSG 3 Or* 16 26 49.2314977008 -24 20 03.429427200           ~ 50 1
47 EM* SR 24B TT* 16 26 58.4361499704 -24 45 32.224542876           M0.5e 97 0
48 EM* SR 24A TT* 16 26 58.5134422944 -24 45 36.722580480       14.15 12.87 K1 118 0
49 EM* SR 24 Y*O 16 26 58.53 -24 45 35.3           K2:e+M0.5e 114 0
50 WL 16 Y*O 16 27 02.33520 -24 37 27.2316           A0-F3 164 0
51 VSSG 31 Or* 16 27 04.10688 -24 28 29.9136           ~ 63 1
52 Elia 2-29 Y*O 16 27 09.43032 -24 37 18.7716           ~ 296 1
53 EM* SR 21A TT* 16 27 10.2778380120 -24 19 12.622467720   16.08 14.10     G1 293 1
54 2MASS J16271031-2419188 TT* 16 27 10.3129723824 -24 19 18.896516436           M4 15 1
55 WLY 1-43 Y*O 16 27 11.17992 -24 40 46.6680           ~ 62 0
56 WL 19 Y*O 16 27 11.71416 -24 38 32.0604           ~ 71 0
57 [GY92] 235 Or* 16 27 13.8206486496 -24 43 31.647995436           M3.5 49 0
58 BKLT J162714-245132 TT* 16 27 14.4890106840 -24 51 33.464339784   18.5 16.44 15.04 13.17 M4.5 41 1
59 BKLT J162715-245137 TT* 16 27 15.1289055168 -24 51 38.814347988   16.9 15.02 13.86 12.38 M2 78 0
60 WL 20 TT* 16 27 15.69840 -24 38 43.4364           M0 86 0
61 NAME WL 20E TT* 16 27 15.8951829912 -24 38 43.788560604           K7 78 0
62 VSSG 26 Or* 16 27 18.48720 -24 29 05.9136           ~ 97 0
63 EM* SR 12 Or* 16 27 19.5054789229 -24 41 40.414828505     13.28 12.15 10.855 M0IVe 193 1
64 YLW 13B Y*O 16 27 21.46872 -24 41 43.0692           ~ 96 0
65 VSSG 22 Or* 16 27 22.9174580712 -24 17 57.414656688           ~ 39 1
66 YLW 16C Or* 16 27 26.48952 -24 39 23.0760           M1 56 0
67 YLW 15B Y*O 16 27 26.61768 -24 40 45.1524           ~ 33 0
68 [JWM2000] SMM J16274-2440 PoC 16 27 26.70 -24 40 52.3           ~ 21 0
69 YLW 15 Y*O 16 27 26.906 -24 40 50.81           ~ 281 1
70 [GCR2002] L1681B VLA 2 Rad 16 27 26.911 -24 40 51.40           ~ 19 0
71 Elia 2-31 TT* 16 27 27.3786513768 -24 31 16.442242464           ~ 74 1
72 YLW 16A Y*O 16 27 28.02744 -24 39 33.5052           K8 205 0
73 Elia 2-33 Y*O 16 27 30.18024 -24 27 43.3656           M2 125 1
74 YLW 18 TT* 16 27 33.1157754648 -24 41 15.259932924       17.66 15.65 K5-K6 88 0
75 IRAS 16245-2423 TT* 16 27 37.1906433768 -24 30 35.025246828       16.66 14.67 B5-F2 376 0
76 WLY 2-50 Or* 16 27 38.1256099368 -24 30 42.980129964           ~ 37 0
77 YLW 47 TT* 16 27 38.3206405584 -24 36 58.594880844       17.69 15.52 M0 104 0
78 Haro 1-11 TT* 16 27 38.3295904392 -23 57 32.512870116   17.3   13.66 12.30 K6 50 0
79 DoAr 33 TT* 16 27 39.0123517344 -23 58 18.709495500   15.7   13.24 12.02 K4 100 0
80 ROX 27 TT* 16 27 39.4295731464 -24 39 15.527230272       15.76 14.03 M0+M4 137 0
81 YLW 45 Y*O 16 27 39.82824 -24 43 15.0672           ~ 120 0
82 CD-24 12689 Or* 16 27 40.2857881416 -24 22 04.130226300   12.91 11.533 11.11 10.00 K5e 301 0
83 [GY92] 371 Or* 16 27 49.7891400099 -24 25 21.930904732           M6 35 0
84 Elia 2-36 TT* 16 27 49.8764029464 -24 25 40.232849484       13.69 12.19 A7 75 0
85 YLW 52 Y*O 16 27 51.80472 -24 31 45.5304           ~ 71 0
86 WLY 2-55 TT* 16 27 52.0872222936 -24 40 50.723707476     16.28 14.48 12.78 K7.5 85 0
87 WLY 1-54 * 16 27 54.4276339392 -24 48 04.087098900           ~ 10 0
88 EM* SR 10 Or* 16 27 55.5811084704 -24 26 18.029534748   15.23 14.19 13.91 11.95 M1.5e 88 0
89 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
90 YLW 58 TT* 16 28 16.5129208176 -24 36 58.054939128   18.5   16.55 14.46 M4 119 0
91 EM* SR 20 Or* 16 28 32.6876536896 -24 22 45.008526648   16.23   12.59   G7 90 0
92 EM* SR 13 Or* 16 28 45.2768168328 -24 28 18.905579112     13.60 12.40 10.9 M2e 142 0
93 BKLT J162854-244743 TT* 16 28 54.0781293792 -24 47 44.285434800   17.3   15.24 13.54 M2 57 0
94 2MASS J16293397-2455303 TT* 16 29 33.9782062176 -24 55 30.455016924     12.44 11.61 10.79 K1IV 20 0
95 NAME Sco-Oph Region reg 16 30.0 -21 00           ~ 76 0
96 2MASS J16302339-2454161 Or* 16 30 23.4030248496 -24 54 16.122323448   18.5       ~ 37 0
97 2MASS J16303563-2434188 TT* 16 30 35.6378666880 -24 34 18.704660484   12.5 12.90 11.85 10.76 ~ 37 0
98 2MASS J16305150-2411337 TT* 16 30 51.5075738448 -24 11 33.933867576   11.0 12.81 11.75 10.76 ~ 4 0
99 CoKu Haro 1-14 c Or* 16 31 04.3604585856 -24 04 33.304117764   13.76 12.35 12.14   K4IVe 36 0
100 Haro 1-14 Or* 16 31 05.1623543808 -24 04 40.307366316       14.04   ~ 61 0
101 V* V2131 Oph Or* 16 31 15.7445171496 -24 34 02.161097472   12.0 12.05 11.06 10.13 ~ 102 0
102 CD-24 12697A TT* 16 31 20.1191847456 -24 30 05.057116128   11.89 10.93     G5IVe 53 0
103 CD-24 12697B TT* 16 31 20.1894501240 -24 30 00.688079088   13.71 12.39     K3e 30 0
104 WSB 71 ** 16 31 30.88128 -24 24 39.8916           ~ 31 0
105 DoAr 43 Em* 16 31 30.8820829680 -24 24 39.887863092   16.98 15.23 15.20   K2Ve 63 0
106 Haro 1-16 Or* 16 31 33.4634997336 -24 27 37.158728076   14.02 12.80     K3e 266 0
107 IRAS 16285-2355 Y*O 16 31 35.65752 -24 01 29.4708           ~ 178 0
108 ISO-Oph 204 TT* 16 31 52.1203898904 -24 56 15.707944320           ~ 45 0
109 IRAS 16289-2457 Y*O 16 31 54.7465284384 -25 03 24.085891512           M 36 0
110 DoAr 49 Or* 16 32 00.5941488216 -25 30 28.789172136   13.6 13.02 12.19 11.43 K7IVe 24 0
111 WLY 2-67 Y*O 16 32 00.99624 -24 56 41.9640           ~ 67 0
112 DoAr 50 Or* 16 32 01.6151945400 -25 30 25.389788652     12.421 12.19 10.712 K5IVe 29 0
113 DoAr 51 Or* 16 32 11.7949720728 -24 40 21.640407420   13.89 13.65 12.43 11.025 K8IVe 76 0
114 HD 150193 Ae* 16 40 17.9243127240 -23 53 45.193372692 9.69 9.32 8.79 8.41   A3Va(e) 336 0

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