2001A&A...372..173B

Query : 2001A&A...372..173B

2001A&A...372..173B - Astronomy and Astrophysics, volume 372, 173-194 (2001/6-2)

ISOCAM observations of the ρ Ophiuchi cloud: Luminosity and mass functions of the pre-main sequence embedded cluster.

BONTEMPS S., ANDRE P., KAAS A.A., NORDH L., OLOFSSON G., HULDTGREN M., ABERGEL A., BLOMMAERT J., BOULANGER F., BURGDORF M., CESARSKY C.J., CESARSKY D., COPET E., DAVIES J., FALGARONE E., LAGACHE G., MONTMERLE T., PERAULT M., PERSI P., PRUSTI T., PUGET J.L. and SIBILLE F.

Abstract (from CDS):

We present the results of the first extensive mid-infrared (IR) imaging survey of the ρ Ophiuchi embedded cluster, performed with the ISOCAM camera on board the ISO satellite. The main ρ Ophiuchi molecular cloud L1688, as well as the two secondary clouds L1689N and L1689S, have been completely surveyed for point sources at 6.7µm and 14.3µm. A total of 425 sources are detected in ∼0.7deg2, including 16 Class I, 123 Class II, and 77 Class III young stellar objects (YSOs). Essentially all of the mid-IR sources coincide with near-IR sources, but a large proportion of them are recognized for the first time as YSOs. Our dual-wavelength survey allows us to identify essentially all the YSOs with IR excess in the embedded cluster down to Fν∼10-15mJy. It more than doubles the known population of Class II YSOs and represents the most complete census to date of newly formed stars in the ρ Ophiuchi central region. There are, however, reasons to believe that several tens of Class III YSOs remain to be identified below L*∼0.2L☉. The mid-IR luminosities of most (∼65%) Class II objects are consistent with emission from purely passive circumstellar disks. The stellar luminosity function of the complete sample of Class II YSOs is derived with good accuracy down to L*∼0.03L☉. It is basically flat (in logarithmic units) below L*∼2L☉, exhibits a possible local maximum at L*∼1.5L☉, and sharply falls off at higher luminosities. A modeling of the luminosity function, using available pre-main sequence tracks and plausible star formation histories, allows us to derive the mass distribution of the Class II YSOs which arguably reflects the initial mass function (IMF) of the embedded cluster. After correction for the presence of unresolved binary systems, we estimate that the IMF in ρ Ophiuchi is well described by a two-component power law with a low-mass index of -0.35±0.25, a high-mass index of -1.7 (to be compared with the Salpeter value of -1.35), and a break occurring at Mflat=0.55±0.25M☉. This IMF is flat with no evidence for a low-mass cutoff down to at least ∼0.06M☉.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - stars: low-mass, brown dwarfs - stars: luminosity function, mass function - stars: pre-main sequence - ISM: individual objects: ρ Ophiuchi cloud

VizieR on-line data: <Available at CDS (J/A+A/372/173): table1.dat>

Nomenclature: Table 1: ISO-Oph NNN (Nos 1-212).

Simbad objects: 230

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Number of rows : 230
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 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 648 0
2 YLW 19 Y*O 16 25 36.7381317840 -24 15 42.526380780   17.8 16.4 14.94 13.36 K3-K5 48 0
3 BKLT J162538-242238 Y*O 16 25 38.1274773528 -24 22 36.185318004           M0 37 0
4 IRAS 16226-2420 TT* 16 25 39.58128 -24 26 34.9116       16.78 14.84 M2 47 0
5 BKLT J162541-242138 Y*O 16 25 41.2946609928 -24 21 36.666086868           M7.25 7 0
6 WLY 2-10 TT* 16 25 50.5247210760 -24 39 14.565244608     15.49 13.83 12.30 K5.5 38 0
7 EM* SR 4 Or* 16 25 56.1659023848 -24 20 48.240627072     12.80 11.7 10.7 K0:Ve 186 1
8 GSS 20 TT* 16 25 57.5183458272 -24 30 31.792496832     16.37 14.77 13.05 K5.5 51 0
9 [SKS95] 162300.0-241834 Y*O 16 26 01.3781005104 -24 25 20.496413424           ~ 23 0
10 BKLT J162601-242945 TT* 16 26 01.6091149584 -24 29 45.046071528       17.22 15.00 M3 17 0
11 Haro 1-6 Or* 16 26 03.0276684144 -24 23 36.188140848   14.15 14.01 12.38 10.80 K0 217 2
12 VSSG 19 TT* 16 26 03.2977778400 -24 17 46.536135468     16.49 14.86 13.00 M2 34 0
13 BKLT J162604-241753 Y*O 16 26 04.57776 -24 17 51.4824           M4.5 19 0
14 BKLT J162607-242725 Y*O 16 26 07.04280 -24 27 24.1848           ~ 22 1
15 BKLT J162607-242742 Y*O 16 26 07.63968 -24 27 41.3676           ~ 18 1
16 CRBR 2307.5-1206 Y*O 16 26 08.79912 -24 18 52.6356           ~ 5 0
17 EM* SR 3 Y*O 16 26 09.3229222944 -24 34 12.172009728   10.9 9.88   9.01 A0 116 0
18 GSS 26 Y*O 16 26 10.33152 -24 20 54.8232           M0 84 1
19 CRBR 2314.4-1237 Y*O 16 26 15.8177264160 -24 19 22.561232916           ~ 23 1
20 GSS 29 TT* 16 26 16.8561896376 -24 22 23.150221356       17.4 15.23 K5-K6 84 1
21 DoAr 24 TT* 16 26 17.0743951968 -24 20 21.594730920   16.06 14.21 14.02 11.57 K7.5V 112 1
22 CRBR 2315.8-1700 Y*O 16 26 17.22936 -24 23 45.3660           ~ 43 0
23 BKLT J162618-241712 TT* 16 26 18.62064 -24 17 10.2912           ~ 4 0
24 CRBR 2317.3-1925 Y*O 16 26 18.82056 -24 26 10.5216           M7 46 0
25 Elia 2-20 TT* 16 26 18.8775818016 -24 28 19.695035064           ~ 119 1
26 CRBR 2317.6-1622 TT* 16 26 18.97296 -24 23 07.5048           ~ 7 0
27 CRBR 2317.5-1729 Y*O 16 26 18.98232 -24 24 14.2596           M6 47 0
28 BKLT J162620-240854 TT* 16 26 20.9876547816 -24 08 51.872620308     16.52 14.87 13.11 M2 33 0
29 BKLT J162621-241544 TT* 16 26 21.0273010224 -24 15 41.471673624           ~ 9 0
30 GSS 30 Y*O 16 26 21.38160 -24 23 04.0524           ~ 210 1
31 [GY92] 5 Y*O 16 26 21.5381846568 -24 26 00.994958844       18.30 15.80 M7 69 1
32 [JJK2008] SMM J162622-24225 smm 16 26 21.60 -24 22 54.8           ~ 41 0
33 [CHG85] GSS 30 IRS 3 Y*O 16 26 21.77376 -24 22 51.3948           ~ 66 0
34 [GY92] 3 Y*O 16 26 21.9078410496 -24 44 39.697627344       17.95 15.62 M6.5 55 0
35 NAME rho Oph Cluster Cl* 16 26 22 -24 23.7           ~ 70 0
36 [RR90] Oph 2320.8-1721 Y*O 16 26 22.26912 -24 24 07.0632           M8 70 0
37 VSSG 12 Y*O 16 26 22.38552 -24 22 52.9464           ~ 52 0
38 [GY92] 15 Y*O 16 26 22.95576 -24 28 46.1496           M6 26 0
39 GSS 31 TT* 16 26 23.3684537424 -24 20 59.579380248   15.9 14.70 14.33 11.53 K0e 143 1
40 [GY92] 21 Y*O 16 26 23.57976 -24 24 39.4956           K7 71 2
41 DoAr 25 TT* 16 26 23.6911292736 -24 43 13.888543800       12.65   K5 166 0
42 GSS 32 TT* 16 26 24.0509462472 -24 24 48.095495928       17.81 15.58 K5-K6 103 1
43 Elia 2-24 TT* 16 26 24.0886188024 -24 16 13.448569260   16.3 14.40 15.81 13.97 K6 165 1
44 [GY92] 29 Y*O 16 26 25.28280 -24 24 45.0072           ~ 24 1
45 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 289 1
46 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 404 0
47 [SSG2006] MMS002 smm 16 26 26.50 -24 24 30.9           ~ 241 0
48 [GY92] 33 Y*O 16 26 27.5391054120 -24 41 53.887865712           ~ 27 0
49 VSSG 29 Y*O 16 26 27.8153977560 -24 26 41.853907500         17.85 M5 43 1
50 BKLT J162628-241543 Y*O 16 26 28.47672 -24 15 41.1660           ~ 10 1
51 ROX 13 Y*O 16 26 29.67048 -24 19 05.5092           ~ 23 1
52 VSSG 27 Y*O 16 26 30.46896 -24 22 57.1440           M 62 1
53 YLW 35 Y*O 16 26 31.03680 -24 31 05.2248           ~ 21 1
54 GSS 35 TT* 16 26 34.1761719864 -24 23 28.283473860     16.53 14.75 12.51 B3 236 1
55 BKLT J162636-241811 Y*O 16 26 36.72888 -24 18 09.4536           ~ 3 0
56 V* V2675 Oph Or* 16 26 36.8195427312 -24 19 00.220560852           M3.25 22 1
57 BKLT J162636-241554 Y*O 16 26 36.8350696008 -24 15 51.854365512       17.37 15.67 K7-M1 40 1
58 VSSG 4 Y*O 16 26 37.78680 -24 23 00.7476           ~ 32 0
59 [GY92] 84 Y*O 16 26 38.80368 -24 23 22.7328           M6 22 0
60 [GY92] 91 Y*O 16 26 40.46952 -24 27 14.4720           ~ 80 1
61 WLY 2-16 Y*O 16 26 40.83456 -24 30 50.9508           M5.75 21 0
62 [GY92] 93 TT* 16 26 41.2666088952 -24 40 17.881012092       15.41 13.37 M5 59 0
63 GSS 38 TT* 16 26 41.95872 -24 18 00.1404           ~ 8 0
64 WL 8 Y*O 16 26 42.01776 -24 33 26.2332           ~ 21 0
65 WL 7 Y*O 16 26 42.14328 -24 31 02.9460           ~ 35 0
66 [GY92] 101 Y*O 16 26 42.43920 -24 26 25.8972           ~ 27 1
67 [GY92] 103 Y*O 16 26 42.52440 -24 26 31.9056           ~ 10 1
68 GSS 37 TT* 16 26 42.85416 -24 20 29.8608       16.29 14.08 K7-M2 83 1
69 [GY92] 109 Y*O 16 26 42.89280 -24 22 59.0808           M6 19 0
70 VSSG 11 TT* 16 26 43.7641950672 -24 16 33.272135940           ~ 48 1
71 VSSG 30 Y*O 16 26 44.19504 -24 34 48.3492           ~ 135 0
72 [GY92] 112 TT* 16 26 44.3020015896 -24 43 14.061995292     17.07 15.15 13.37 M3 39 0
73 GSS 39 Y*O 16 26 45.0318401664 -24 23 07.793180124           M0 199 1
74 YLW 37 TT* 16 26 46.4288834880 -24 12 00.078675192   17.15   13.90 12.37 G3.5 61 0
75 [GY92] 122 Y*O 16 26 47.0562943152 -24 44 29.784385248       17.41 15.19 M4.5 25 0
76 WL 2 Y*O 16 26 48.48624 -24 28 38.9064           ~ 60 1
77 [GY92] 130 TT* 16 26 48.74688 -24 26 25.5192           ~ 7 0
78 WL 18 TT* 16 26 48.9809680488 -24 38 25.152593208       19.33 17.38 M3.5 70 0
79 VSSG 3 Y*O 16 26 49.2314977008 -24 20 03.429427200           ~ 46 1
80 YLW 1A TT* 16 26 51.1102330584 -24 20 50.761137588           ~ 9 0
81 BBRCG 13 Y*O 16 26 51.97104 -24 30 39.4956           M4-M6 30 1
82 NAME rho Oph C Cloud MoC 16 26 53.1 -24 32 31           ~ 77 0
83 BBRCG 14 Y*O 16 26 53.46936 -24 32 36.2472           ~ 27 1
84 [GY92] 152 Y*O 16 26 54.29328 -24 24 38.1636           M3-5 18 0
85 VSSG 5 Y*O 16 26 54.44376 -24 26 20.7204           ~ 44 1
86 [GY92] 154 Y*O 16 26 54.77088 -24 27 02.2464           M6 27 0
87 [GY92] 156 Y*O 16 26 54.97272 -24 22 29.6904           ~ 22 1
88 GSS 41 TT* 16 26 55.31160 -24 20 27.8124           ~ 13 0
89 BKLT J162656-241353 TT* 16 26 56.7836190744 -24 13 51.537326592       18.46 16.29 K7 33 0
90 BBRCG 16 TT* 16 26 56.91984 -24 28 37.0740           ~ 17 0
91 WL 21 Y*O 16 26 57.33000 -24 35 38.8032           M6 45 0
92 CRBR 2356.6-3058 Y*O 16 26 58.27872 -24 37 40.9584           ~ 25 0
93 YLW 1C Or* 16 26 58.39608 -24 21 29.9808           M6 35 0
94 Haro 1-7 ** 16 26 58.53 -24 45 35.3           K2:e+M0.5e 102 0
95 BKLT J162658-241836 Or* 16 26 58.63896 -24 18 34.6644           M4.5 25 1
96 WL 14 Or* 16 26 59.04984 -24 35 56.8788           ~ 53 0
97 WL 22 TT* 16 26 59.16720 -24 34 58.8072           ~ 65 0
98 VSSG 8 TT* 16 27 01.61856 -24 21 37.0404           ~ 16 0
99 NAME rho Oph E MoC 16 27 02.0 -24 38 31           ~ 63 0
100 WL 16 Y*O 16 27 02.33520 -24 37 27.2316           A0-F3 157 0
101 [GY92] 188 Y*O 16 27 03.00720 -24 26 14.6976           ~ 29 1
102 BKLT J162703-242007 Y*O 16 27 03.59088 -24 20 05.4456           M1.5 23 0
103 VSSG 31 Or* 16 27 04.10688 -24 28 29.9136           ~ 61 1
104 [GY92] 193 Y*O 16 27 04.5156704856 -24 42 59.671949976       16.69 14.97 K6-M1 35 0
105 [GY92] 194 Y*O 16 27 04.5603052200 -24 42 14.017947300       17.54 15.66 K8-M0 32 0
106 [GY92] 195 Or* 16 27 04.57464 -24 27 15.6636           ~ 33 1
107 [GY92] 197 Y*O 16 27 05.24616 -24 36 29.7936           ~ 69 1
108 BKLT J162705-244013 Y*O 16 27 05.67576 -24 40 13.0908           ~ 18 0
109 YLW 10A TT* 16 27 05.97576 -24 26 18.5172           ~ 23 1
110 [GY92] 204 TT* 16 27 06.5924837856 -24 41 48.871282992       17.57 15.43 M5 99 0
111 WL 17 Y*O 16 27 06.77616 -24 38 14.9964           ~ 102 0
112 [GY92] 207 TT* 16 27 07.95504 -24 40 29.1396           ~ 6 0
113 BKLT J162708-241204 TT* 16 27 09.0794157000 -24 12 00.814867308       18.47 16.14 M2.5 31 0
114 WL 10 Or* 16 27 09.1062090672 -24 34 08.278196304           K9 72 0
115 [GY92] 213 Y*O 16 27 09.35328 -24 40 22.4292           ~ 32 0
116 Elia 2-29 Y*O 16 27 09.43032 -24 37 18.7716           ~ 283 1
117 BBRCG 25 Y*O 16 27 09.72456 -24 29 55.5648           ~ 10 0
118 EM* SR 21A TT* 16 27 10.2778380120 -24 19 12.622467720   16.08 14.10     G1 271 1
119 WL 9 Y*O 16 27 10.34664 -24 33 22.6692           ~ 23 0
120 NAME rho Oph B Cloud MoC 16 27 11 -24 28.5           ~ 84 1
121 WLY 1-43 Y*O 16 27 11.17992 -24 40 46.6680           ~ 60 0
122 WLY 2-32 Y*O 16 27 11.68224 -24 23 41.9748           F 20 0
123 WL 19 Y*O 16 27 11.71416 -24 38 32.0604           ~ 71 0
124 WL 11 Or* 16 27 12.13128 -24 34 49.1412           M2 45 0
125 VSSG 24 Y*O 16 27 13.7329154424 -24 18 16.861890420           ~ 38 1
126 [GY92] 235 Y*O 16 27 13.8206486496 -24 43 31.647995436           M3.5 44 0
127 WLY 2-33 Y*O 16 27 14.50512 -24 26 46.0860           ~ 34 0
128 YLW 10B Y*O 16 27 15.45432 -24 26 39.8004           ~ 51 0
129 WLY 2-35 Y*O 16 27 15.51408 -24 30 53.6832           ~ 33 0
130 WL 20 Y*O 16 27 15.69840 -24 38 43.4364           ~ 79 0
131 YLW 10C Y*O 16 27 15.88488 -24 25 14.1924           ~ 29 0
132 NAME WL 20E Y*O 16 27 15.8951829912 -24 38 43.788560604           ~ 72 0
133 YLW 12A Y*O 16 27 17.57160 -24 28 56.2944           ~ 69 0
134 ISO-Oph 123 TT* 16 27 17.5857757152 -24 05 13.700934204   20.3 18.9 17.67 15.47 M3.5 16 0
135 WL 5 TT* 16 27 18.17064 -24 28 52.6800           ~ 88 0
136 [GY92] 248 Y*? 16 27 18.37560 -24 24 26.3124           ~ 12 0
137 BBRCG 39 Y*O 16 27 18.38040 -24 39 14.6844           ~ 41 0
138 VSSG 26 Or* 16 27 18.48720 -24 29 05.9136           ~ 89 0
139 WL 3 Y*O 16 27 19.21584 -24 28 43.8528           K7 64 0
140 EM* SR 12 Or* 16 27 19.5054789229 -24 41 40.414828505     13.28 12.15 10.855 M0IVe 183 1
141 YLW 13B Y*O 16 27 21.46872 -24 41 43.0692           ~ 91 0
142 [GY92] 255 Y*O 16 27 21.68472 -24 21 49.9608           ~ 9 0
143 WL 6 Y*O 16 27 21.80448 -24 29 53.3616           ~ 115 0
144 [GY92] 253 Y*O 16 27 21.83064 -24 43 35.6952           M3 29 0
145 BBRCG 43 Y*O 16 27 21.97560 -24 29 39.7716           ~ 27 0
146 VSSG 22 Or* 16 27 22.9174580712 -24 17 57.414656688           ~ 36 1
147 [GY92] 257 Y*O 16 27 24.19872 -24 29 29.4720           ~ 22 0
148 [GY92] 258 TT* 16 27 24.39000 -24 41 47.5620           ~ 23 0
149 CRBR 2422.8-3423 Y*O 16 27 24.61320 -24 41 03.4080           ~ 91 1
150 BKLT J162726-241925 Y*O 16 27 26.22336 -24 19 22.9980           M7.75 30 0
151 [GY92] 260 Y*O 16 27 26.28552 -24 42 46.1304           M3-5 28 0
152 YLW 16C Or* 16 27 26.48952 -24 39 23.0760           M1 56 0
153 YLW 15 Y*O 16 27 26.906 -24 40 50.81           ~ 268 1
154 Elia 2-31 TT* 16 27 27.3786513768 -24 31 16.442242464           ~ 71 1
155 YLW 16A Y*O 16 27 28.02744 -24 39 33.5052           K8 194 0
156 Elia 2-32 Y*O 16 27 28.44576 -24 27 21.0348           K6.5 113 1
157 YLW 16B Or* 16 27 29.43528 -24 39 16.1892           ~ 106 0
158 BBRCG 53 Y*O 16 27 29.96424 -24 33 36.5688           ~ 21 0
159 Elia 2-33 Y*O 16 27 30.18024 -24 27 43.3656           M2 117 1
160 BKLT J162730-244726 Y*O 16 27 30.8387523216 -24 47 26.789692992       18.32 16.17 M1-M2 23 0
161 [GY92] 284 TT* 16 27 30.8467391952 -24 24 56.094396228       18.45 16.24 M3.25 46 0
162 ISO-Oph 150 TT* 16 27 30.91152 -24 27 33.1956           ~ 18 0
163 BBRCG 56 Y*O 16 27 31.0593237432 -24 34 03.262655028           ~ 20 0
164 BBRCG 60 Y*O 16 27 32.67576 -24 33 23.9328           ~ 35 0
165 BBRCG 59 Y*O 16 27 32.71056 -24 32 42.3636           ~ 13 0
166 BBRCG 61 Y*O 16 27 32.85048 -24 32 34.8324           ~ 33 0
167 YLW 18 TT* 16 27 33.1157754648 -24 41 15.259932924       17.66 15.65 K5-K6 76 0
168 [GY92] 295 TT* 16 27 35.2627683216 -24 38 33.428056416       16.16 14.08 M4.5 40 0
169 [GY92] 296 Y*O 16 27 35.6609124408 -24 45 32.525715996           ~ 14 0
170 [GY92] 297 Y*O 16 27 36.5262764280 -24 28 33.332095092       14.67 13.30 M2 13 0
171 IRAS 16245-2423 TT* 16 27 37.1906433768 -24 30 35.025246828       16.66 14.67 B5-F2 307 0
172 [GY92] 301 Y*O 16 27 37.24944 -24 42 38.0160           ~ 37 0
173 NAME rho Oph F MoC 16 27 37.3 -24 42 28           ~ 63 0
174 BKLT J162737-241756 Y*O 16 27 37.4277519528 -24 17 54.924640440           M7.5 32 0
175 [GY92] 309 Y*? 16 27 38.05752 -24 25 27.9372           ~ 6 0
176 WLY 2-50 Y*O 16 27 38.1256099368 -24 30 42.980129964           ~ 33 0
177 YLW 47 TT* 16 27 38.3206405584 -24 36 58.594880844       17.69 15.52 M0 94 0
178 [GY92] 310 Y*O 16 27 38.6295993720 -24 38 39.214842072         17.40 M8 68 0
179 [GY92] 312 Y*O 16 27 38.94456 -24 40 20.6724           M2.5 45 0
180 ROX 27 TT* 16 27 39.4295731464 -24 39 15.527230272       15.76 14.03 M0+M4 111 0
181 YLW 45 Y*O 16 27 39.82824 -24 43 15.0672           ~ 115 0
182 CD-24 12689 Or* 16 27 40.2857881416 -24 22 04.130226300   12.91 11.533 11.11 10.00 K5e 283 0
183 [GY92] 322 Y*O 16 27 41.49432 -24 35 37.6656           ~ 19 0
184 BKLT J162741-244645 Y*O 16 27 41.61024 -24 46 44.7420           ~ 21 0
185 [GY92] 323 Y*O 16 27 41.75280 -24 43 36.0984           ~ 23 0
186 [GY92] 326 TT* 16 27 42.7019158944 -24 38 50.619050052         17.30 M2 42 0
187 WLY 2-53 TT* 16 27 43.78392 -24 43 08.0544           ~ 15 0
188 [GY92] 344 Y*O 16 27 45.78672 -24 44 53.8620           M6 31 0
189 [GY92] 346 Y*O 16 27 45.96504 -24 38 00.5712           ~ 6 0
190 [GY92] 350 Y*O 16 27 46.2923939352 -24 31 41.243157372           M7.5 42 0
191 [GY92] 352 Y*O 16 27 47.09496 -24 45 35.0676           ~ 24 0
192 [GY92] 371 Y*O 16 27 49.7891400099 -24 25 21.930904732           M6 33 0
193 Elia 2-36 TT* 16 27 49.8764029464 -24 25 40.232849484       13.69 12.19 A7 69 0
194 [GY92] 370 TT* 16 27 49.9683571632 -24 44 16.983329568           M5.75 11 0
195 [GY92] 373 Y*O 16 27 50.5084164432 -24 39 03.048694488           ~ 7 0
196 YLW 52 Y*O 16 27 51.80472 -24 31 45.5304           ~ 70 0
197 [GY92] 377 Y*O 16 27 51.8954041800 -24 46 30.021158712           ~ 14 0
198 WLY 2-55 TT* 16 27 52.0872222936 -24 40 50.723707476     16.28 14.48 12.78 K7.5 81 0
199 [GY92] 397 Y*O 16 27 55.25496 -24 28 39.5580           M6 29 0
200 EM* SR 10 Or* 16 27 55.5811084704 -24 26 18.029534748   15.23 14.19 13.91 11.95 M1.5e 79 0
201 [GY92] 398 Y*O 16 27 55.65360 -24 44 50.9028           ~ 9 0
202 [GY92] 410 Y*O 16 27 57.8271907728 -24 40 01.752906684           K7 29 0
203 [GY92] 412 TT* 16 27 57.87480 -24 36 02.2140           ~ 7 0
204 [GY92] 450 Y*O 16 28 03.55560 -24 34 38.6148           M6 14 0
205 [GY92] 463 TT* 16 28 04.64592 -24 34 56.0964           ~ 16 0
206 [GY92] 472 TT* 16 28 05.77704 -24 33 54.9900           ~ 8 0
207 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3629 1
208 BKLT J162812-241138 Y*O 16 28 12.7235398560 -24 11 35.716712676           M6 34 0
209 BKLT J162813-243249 Y*O 16 28 13.7954116248 -24 32 49.476119064       18.08 15.72 M3-M4.5 24 0
210 YLW 58 TT* 16 28 16.5129208176 -24 36 58.054939128   18.5   16.55 14.46 M4 100 0
211 ISO-Oph 195 TT* 16 28 16.7370297600 -24 05 14.436020040       15.59 13.91 K5-K6 42 0
212 BKLT J162821-244246 Y*O 16 28 21.70584 -24 42 47.1276           ~ 13 0
213 NAME Ophiuchus D MoC 16 28 29.2 -24 18 25           ~ 117 0
214 EM* SR 20 Or* 16 28 32.6876536896 -24 22 45.008526648   16.23   12.59   G7 82 0
215 EM* SR 13 Or* 16 28 45.2768168328 -24 28 18.905579112     13.60 12.40 10.9 M2e 133 0
216 ISO-Oph 200 Y*O 16 31 43.7629847376 -24 55 24.548472336           ~ 24 0
217 ISO-Oph 201 TT* 16 31 48.92688 -24 54 29.2500           ~ 8 0
218 ISO-Oph 202 cor 16 31 52.06 -24 57 26.0           ~ 14 1
219 ISO-Oph 204 TT* 16 31 52.1203898904 -24 56 15.707944320           ~ 43 0
220 ISO-Oph 203 Y*O 16 31 52.44696 -24 55 36.0804           ~ 18 0
221 ISO-Oph 205 TT* 16 31 53.43552 -24 55 05.0736           ~ 8 0
222 WSB 73 Y*O 16 31 54.4287499656 -25 03 49.339841904           M4 13 0
223 IRAS 16289-2457 Y*O 16 31 54.7465284384 -25 03 24.085891512           M 33 0
224 ISO-Oph 208 TT* 16 31 59.3288145312 -24 54 40.637042244           M5.5 10 0
225 WLY 2-67 Y*O 16 32 00.99624 -24 56 41.9640           ~ 63 0
226 ISO-Oph 210 Y*O 16 32 02.21712 -24 56 16.8144           M5 5 0
227 WSB 75 Y*O 16 32 05.5372312560 -25 02 36.292205904           K7 17 0
228 WLY 2-69 Y*O 16 32 21.0551616720 -24 30 35.941721580           ~ 23 0
229 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1252 1
230 LDN 1689N DNe 16 32 25.96 -24 28 46.2           ~ 115 0

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