2012ApJ...744....6S


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST17:56:32

2012ApJ...744....6S - Astrophys. J., 744, 6 (2012/January-1)

Substellar objects in nearby young clusters (SONYC). IV. A census of very low mass objects in NGC 1333.

SCHOLZ A., MUZIC K., GEERS V., BONAVITA M., JAYAWARDHANA R. and TAMURA M.

Abstract (from CDS):

SONYC–Substellar Objects in Nearby Young Clusters–is a program to investigate the frequency and properties of young substellar objects with masses down to a few times that of Jupiter. Here we present a census of very low mass objects in the ∼1 Myr old cluster NGC 1333. We analyze near-infrared spectra taken with Fiber Multi-Object Spectrograph/Subaru for 100 candidates from our deep, wide-field survey and find 10 new likely brown dwarfs with spectral types of M6 or later. Among them, there are three with ≳ M9 and one with early L spectral type, corresponding to masses of 0.006 to ≲ 0.02 M, so far the lowest mass objects identified in this cluster. The combination of survey depth, spatial coverage, and extensive spectroscopic follow-up makes NGC 1333 one of the most comprehensively surveyed clusters for substellar objects. In total, there are now 51 objects with spectral type M5 or later and/or effective temperature of 3200 K or cooler identified in NGC 1333; 30-40 of them are likely to be substellar. NGC 1333 harbors about half as many brown dwarfs as stars, which is significantly more than in other well-studied star-forming regions, thus raising the possibility of environmental differences in the formation of substellar objects. The brown dwarfs in NGC 1333 are spatially strongly clustered within a radius of ∼1 pc, mirroring the distribution of the stars. The disk fraction in the substellar regime is <66%, lower than for the total population (83%) but comparable to the brown dwarf disk fraction in other 2-3 Myr old regions.

Abstract Copyright:

Journal keyword(s): brown dwarfs - circumstellar matter - planetary systems - stars: formation - stars: low-mass

VizieR on-line data: <Available at CDS (J/ApJ/744/6): table2.dat table4.dat table6.dat table7.dat tablen1.dat tablen2.dat izcat.dat jkscat.dat> (includes tables 1 and 2 of paper VI = 2012ApJ...756...24S)

Nomenclature: Table 2: SONYC NGC 1333-NN (Nos 29-38).

Simbad objects: 146

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Number of rows : 146

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2MASS J03275250+3119388 * 03 27 52.4938915566 +31 19 38.754779737           ~ 1 0
2 2MASS J03275627+3127007 NIR 03 27 56.271 +31 27 00.78           ~ 1 0
3 2MASS J03280118+3117365 * 03 28 01.1838152973 +31 17 36.426969728           ~ 1 0
4 2MASS J03280632+3110019 * 03 28 06.3206822013 +31 10 01.821979267           ~ 1 0
5 2MASS J03280763+3126423 NIR 03 28 07.636 +31 26 42.37           ~ 1 0
6 2MASS J03281951+3126395 * 03 28 19.5164360868 +31 26 39.483662698           ~ 2 0
7 2MASS J03282206+3110429 Y*? 03 28 22.0646203078 +31 10 42.836669174           ~ 5 0
8 2MASS J03282289+3115216 NIR 03 28 22.8962402857 +31 15 21.564530252           ~ 2 0
9 2MASS J03282383+3132493 NIR 03 28 23.8378300848 +31 32 49.232761880           ~ 1 0
10 2MASS J03282839+3116273 LM* 03 28 28.4203453273 +31 16 27.088943297           M6.9 5 0
11 2MASS J03283107+3117040 LM* 03 28 31.08 +31 17 04.1           M9.3 3 0
12 2MASS J03283546+3121299 NIR 03 28 35.4696346413 +31 21 29.884488325           ~ 2 0
13 2MASS J03283754+3132545 * 03 28 37.5570598112 +31 32 54.524235171           ~ 1 0
14 2MASS J03283775+3126327 NIR 03 28 37.75 +31 26 32.8           ~ 2 0
15 2MASS J03283900+3108076 NIR 03 28 39.0189397044 +31 08 07.588378668           ~ 2 0
16 2MASS J03284022+3125490 LM* 03 28 40.224 +31 25 49.07           M6 2 0
17 2MASS J03284197+3112171 NIR 03 28 41.9758326705 +31 12 17.242053388           ~ 1 0
18 2MASS J03284316+3126061 NIR 03 28 43.1502307336 +31 26 06.094112137           ~ 2 0
19 2MASS J03284355+3117364 Y*O 03 28 43.5575460984 +31 17 36.487675169     19.66 17.87 15.28 M5.0 32 1
20 2MASS J03284407+3120528 Y*O 03 28 44.0790797747 +31 20 52.821690485           M7.5 18 0
21 2MASS J03284496+3131099 NIR 03 28 44.963 +31 31 09.93           ~ 1 0
22 2MASS J03284622+3112034 Y*? 03 28 46.221 +31 12 03.45           ~ 6 0
23 2MASS J03284624+3130120 Y*O 03 28 46.2429320476 +31 30 12.020309560           ~ 6 0
24 2MASS J03284666+3131354 NIR 03 28 46.6683629125 +31 31 35.453847406           ~ 1 0
25 2MASS J03284734+3111298 Y*? 03 28 47.345 +31 11 29.86           ~ 5 0
26 2MASS J03284764+3124061 Y*O 03 28 47.6369433479 +31 24 06.097316210           M4.0 20 0
27 MBO 139 LM* 03 28 47.66040 +31 21 54.6084           M9.2 3 0
28 2MASS J03284782+3116552 Y*O 03 28 47.8269293133 +31 16 55.184657040           M8.0 26 0
29 2MASS J03284844+3120284 Y*? 03 28 48.45 +31 20 28.4           ~ 5 0
30 2MASS J03284897+3112451 NIR 03 28 48.98 +31 12 45.1           ~ 3 0
31 2MASS J03284947+3125066 * 03 28 49.48 +31 25 06.6           ~ 3 0
32 2MASS J03285209+3116292 NIR 03 28 52.10 +31 16 29.3           ~ 3 0
33 2MASS J03285213+3115471 Y*O 03 28 52.1385829071 +31 15 47.212092806           M7.0 22 0
34 2MASS J03285265+3132043 NIR 03 28 52.657 +31 32 04.32           ~ 1 0
35 ASR 46 Y*O 03 28 52.9113840591 +31 16 26.532635524           M6V 24 0
36 ASR 42 Y*O 03 28 54.0801694650 +31 16 54.331608120       18.6   M6.5V 28 0
37 ASR 109 LM* 03 28 54.928 +31 15 29.01           M7.9 9 0
38 [LAL96] 108 * 03 28 55.2233748149 +31 25 22.382253765           ~ 4 0
39 ASR 38 Y*O 03 28 55.2526319531 +31 17 35.366189033           M8V 9 0
40 2MASS J03285573+3130580 NIR 03 28 55.7253227579 +31 30 57.946096112           ~ 2 0
41 [SGJ2009] 4 LM* 03 28 56.41 +31 16 03.6           M9.6 3 0
42 MBO 91 LM* 03 28 56.9361319141 +31 20 48.627639468           M7V 7 0
43 ASR 15 LM* 03 28 56.9508334453 +31 15 50.400343354       21.2   M7.5V 11 0
44 ASR 64 Y*O 03 28 57.11 +31 19 11.9           M7.3 16 0
45 ASR 17 Y*O 03 28 57.15096 +31 15 34.5996           M7.5V 20 0
46 [LAL96] 159 IR 03 28 57.22 +31 07 25.9           ~ 2 0
47 2MASS J03285744+3109464 NIR 03 28 57.45 +31 09 46.5           ~ 2 0
48 MBO 73 Y*O 03 28 58.24200 +31 22 09.3468           M6.5V 12 0
49 2MASS J03285824+3122021 Y*O 03 28 58.2467164962 +31 22 02.072252477           M6 16 0
50 MBO 80 Y*O 03 28 58.4230989158 +31 22 56.732336763           M7V 8 0
51 2MASS J03285868+3109394 NIR 03 28 58.69 +31 09 39.4           ~ 2 0
52 MBO 78 LM* 03 29 00.153 +31 21 09.21           M5 11 0
53 2MASS J03290069+3122008 Y*O 03 29 00.69648 +31 22 00.8256           M1.5 10 0
54 2MASS J03290313+3122381 Y*O 03 29 03.1393197165 +31 22 38.082482234           M2.5 21 0
55 2MASS J03290320+3125451 LM* 03 29 03.2126705280 +31 25 44.932477920           M7.1 12 0
56 2MASS J03290332+3123148 Y*O 03 29 03.32 +31 23 14.8           ~ 20 0
57 ASR 63 Y*O 03 29 03.39816 +31 18 39.9528           M7.5V 14 0
58 2MASS J03290360+3107118 NIR 03 29 03.5972285598 +31 07 11.795996103           ~ 2 0
59 NAME HH 7-11 FIR 03 29 03.9 +31 16 06           ~ 336 0
60 2MASS J03290394+3123307 LM* 03 29 03.949 +31 23 30.80           M8.3 6 0
61 ASR 8 Y*O 03 29 04.0654589569 +31 17 07.500180814           M7 16 0
62 ASR 105 LM* 03 29 04.662 +31 16 59.15           M6 19 0
63 2MASS J03290522+3107105 NIR 03 29 05.2178358990 +31 07 10.426009901           ~ 1 0
64 [SGJ2009] 9 LM* 03 29 05.549 +31 10 14.22           M8 3 0
65 2MASS J03290566+3120107 Y*O 03 29 05.664 +31 20 10.72           ~ 7 0
66 2MASS J03290693+3129571 LM* 03 29 06.935 +31 29 57.13           M7.0 4 0
67 MBO 141 LM* 03 29 07.11 +31 23 22.8           M9.2 3 0
68 2MASS J03290817+3111548 Y*? 03 29 08.17 +31 11 54.9           ~ 4 0
69 2MASS J03290923+3108554 NIR 03 29 09.2209306438 +31 08 55.355159442           ~ 1 0
70 2MASS J03290933+3121042 Y*O 03 29 09.330 +31 21 04.20           ~ 14 0
71 2MASS J03290948+3127209 Y*O 03 29 09.4782630459 +31 27 20.921562383           M5.0 14 0
72 2MASS J03291018+3127159 LM* 03 29 10.1776160447 +31 27 15.886721607           M7.4 6 0
73 2MASS J03291046+3123348 Y*O 03 29 10.46016 +31 23 34.8396           ~ 15 0
74 MBO 62 LM* 03 29 10.7956733290 +31 22 30.120345738           M7.5V 7 0
75 ASR 23 Y*O 03 29 10.8219747734 +31 16 42.675618574           M0- 17 0
76 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1261 1
77 ASR 24 Y*O 03 29 11.3088574788 +31 17 17.571489316           M8V 14 0
78 [LAL96] 241 IR 03 29 11.57 +31 30 04.7           ~ 2 0
79 [LAL96] 242 IR 03 29 11.58 +31 30 04.7           ~ 3 0
80 2MASS J03291223+3112204 NIR 03 29 12.2647557938 +31 12 20.375906255           ~ 3 0
81 ASR 83 Y*O 03 29 12.7915583277 +31 20 07.598240364           M7.5V 7 0
82 ASR 28 LM* 03 29 13.0399551632 +31 17 38.319682784           M8.0 13 0
83 ASR 29 LM* 03 29 13.617 +31 17 43.50           M5 9 0
84 MBO 66 Y*O 03 29 14.4339295021 +31 22 36.191417751           M6.5V 7 0
85 ASR 80 Y*O 03 29 17.7561777616 +31 19 48.138269608           M6.5V 15 0
86 2MASS J03291793+3114535 Y*? 03 29 17.94 +31 14 53.6           ~ 6 0
87 2MASS J03291844+3111304 cor 03 29 18.4029850452 +31 11 30.582121006           ~ 15 0
88 2MASS J03291865+3120178 Y*O 03 29 18.658 +31 20 17.81           ~ 14 0
89 2MASS J03291870+3132264 NIR 03 29 18.708 +31 32 26.40           ~ 1 0
90 BD+30 549 Y*O 03 29 19.7770675177 +31 24 57.044403187 10.81 10.95 10.47 10.587   B8:p 96 1
91 2MASS J03291987+3118478 * 03 29 19.87 +31 18 47.9           ~ 6 0
92 [AAG2011] 12 * 03 29 20.1002712856 +31 08 53.606047406           ~ 2 0
93 2MASS J03292141+3115552 * 03 29 21.4102810537 +31 15 55.326878389           ~ 4 0
94 MBO 54 Y*O 03 29 23.2314219514 +31 26 53.115211524           M5.5V 20 0
95 MBO 69 LM* 03 29 24.4588669464 +31 28 14.788880954           M7.5V 6 0
96 MBO 77 Y*O 03 29 24.8368610902 +31 24 06.220236087           M6.5V 6 0
97 SONYC NGC 1333-36 BD* 03 29 25.84536 +31 16 41.8116           L3: 2 0
98 2MASS J03292611+3111368 * 03 29 26.1126017096 +31 11 36.795842530           ~ 2 0
99 MBO 72 * 03 29 27.6165074104 +31 21 09.983293266           ~ 4 0
100 2MASS J03292805+3118391 * 03 29 28.0520928925 +31 18 39.087352935           ~ 4 0
101 2MASS J03292815+3116285 Y*O 03 29 28.1541354595 +31 16 28.578328319           M7.5 11 0
102 2MASS J03292895+3107408 * 03 29 28.9517235377 +31 07 40.879321571           ~ 2 0
103 2MASS J03292899+3110003 RG* 03 29 28.9843494250 +31 10 00.351285885           ~ 7 0
104 CXONGC1333 J032930.6+312729 LM* 03 29 30.5376777616 +31 27 27.904702897           M6.9 13 0
105 2MASS J03293099+3111200 NIR 03 29 30.998 +31 11 20.05           ~ 1 0
106 2MASS J03293219+3117074 NIR 03 29 32.2034694167 +31 17 07.326228607           ~ 2 0
107 2MASS J03293387+3120362 LM* 03 29 33.8853237266 +31 20 36.019307963           M7.5 4 0
108 SONYC NGC 1333-38 LM* 03 29 34.41432 +31 15 25.2036           M7.7 1 0
109 2MASS J03293456+3111237 NIR 03 29 34.5540320134 +31 11 23.675862642           ~ 2 0
110 2MASS J03293476+3129081 Y*? 03 29 34.7555862665 +31 29 08.111832162           ~ 6 0
111 [GMM2008] 129 Y*O 03 29 35.70 +31 21 08.6           M8.2 4 0
112 2MASS J03293599+3112495 PM* 03 29 35.9870822040 +31 12 49.617808891           ~ 2 0
113 [SGJ2009] 19 LM* 03 29 36.36 +31 17 49.8           ~ 2 0
114 2MASS J03293740+3117415 * 03 29 37.3962443164 +31 17 41.618362605           ~ 2 0
115 2MASS J03293773+3122024 Y*O 03 29 37.7207922892 +31 22 02.565381860           M7.6 15 0
116 2MASS J03293779+3127484 NIR 03 29 37.798 +31 27 48.43           ~ 1 0
117 2MASS J03294415+3119478 LM* 03 29 44.154 +31 19 47.89           M9: 9 0
118 2MASS J03294539+3110356 NIR 03 29 45.3958311791 +31 10 35.669806541           ~ 1 0
119 2MASS J03294540+3116231 NIR 03 29 45.3966010973 +31 16 23.113690151           ~ 1 0
120 2MASS J03294552+3126565 * 03 29 45.5229004073 +31 26 56.526158342           ~ 1 0
121 2MASS J03294648+3108435 NIR 03 29 46.4750390594 +31 08 43.587493641           ~ 1 0
122 2MASS J03294811+3128294 * 03 29 48.1176570623 +31 28 29.460201043           ~ 1 0
123 2MASS J03294916+3109036 PM* 03 29 49.1666097767 +31 09 03.755727782           ~ 1 0
124 2MASS J03295022+3115478 NIR 03 29 50.229 +31 15 47.89           ~ 1 0
125 2MASS J03295234+3128137 NIR 03 29 52.3501671240 +31 28 13.644659097           ~ 1 0
126 2MASS J03295265+3117229 NIR 03 29 52.6655287576 +31 17 22.887078738           ~ 1 0
127 2MASS J03295478+3111416 NIR 03 29 54.7636442328 +31 11 41.419938804           ~ 1 0
128 2MASS J03295549+3115305 * 03 29 55.4944643177 +31 15 30.588020910           ~ 1 0
129 2MASS J03300192+3110504 NIR 03 30 01.9325546872 +31 10 50.490271804           ~ 1 0
130 2MASS J03300541+3125131 NIR 03 30 05.4392385917 +31 25 13.016413113           ~ 1 0
131 Ass Per OB 2 As* 03 42.2 +33 26           ~ 314 0
132 IC 348 OpC 03 44 34 +32 09.8           ~ 1255 1
133 2MASS J04312405+1800215 TT* 04 31 24.0575671088 +18 00 21.455153686   20.38 18.678   14.32 M7 65 0
134 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3694 0
135 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2057 1
136 * sig Ori Y*O 05 38 44.7665260139 -02 36 00.284709290 2.54 3.58 3.79 3.87 4.11 O9.5V 758 0
137 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1087 1
138 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1014 1
139 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 712 0
140 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8IVe 316 0
141 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 250 0
142 LP 271-25 LM* 14 28 43.2272685950 +33 10 39.245755294   21.2   17.8   M9Ve 235 0
143 HD 143567 * 16 01 55.4546289923 -21 58 49.397570493   7.27 7.19 7.87   B9V 111 0
144 RX J1609.5-2105B LM* 16 09 30.377 -21 04 56.97           ~ 100 0
145 NAME Upper Sco Association As* 16 12 -23.4           ~ 1097 1
146 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3167 1

    Equat.    Gal    SGal    Ecl

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2021.05.16-17:56:32

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