2008ApJ...674..336G

Query : 2008ApJ...674..336G

2008ApJ...674..336G - Astrophys. J., 674, 336-356 (2008/February-2)

Spitzer observations of NGC 1333: a study of structure and evolution in a nearby embedded cluster.

GUTERMUTH R.A., MYERS P.C., MEGEATH S.T., ALLEN L.E., PIPHER J.L., MUZEROLLE J., PORRAS A., WINSTON E. and FAZIO G.

Abstract (from CDS):

We present a comprehensive analysis of structure in the young, embedded cluster, NGC 1333 using members identified with Spitzer and 2MASS photometry based on their IR-excess emission. A total of 137 members are identified in this way, composed of 39 protostars and 98 more evolved pre-main-sequence stars with disks. Of the latter class, four are transition/debris disk candidates. The fraction of exposed pre-main-sequence stars with disks is 83%±11%, showing that there is a measurable diskless pre-main-sequence population. The sources in each of the Class I and II evolutionary states are shown to have very different spatial distributions relative to the distribution of the dense gas in their natal cloud. However, the distribution of nearest neighbor spacings among these two groups of sources are found to be quite similar, with a strong peak at spacings of 0.045 pc. Radial and azimuthal density profiles and surface density maps computed from the identified YSOs show that NGC 1333 is elongated and not strongly centrally concentrated, confirming previous claims in the literature. We interpret these new results as signs of a low velocity dispersion, extremely young cluster that is not in virial equilibrium.

Abstract Copyright: ∼

Journal keyword(s): Stars: Formation

VizieR on-line data: <Available at CDS (J/ApJ/674/336): table2.dat table3.dat>

Nomenclature: Table 2: [GMM2008] NNN (Nos 1-137).

Simbad objects: 149

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Number of rows : 149
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 J03281518+3117238 Y*O 03 28 15.187 +31 17 23.88           ~ 3 0
2 JCMTSE J032832.2+311102 cor 03 28 32.581 +31 11 04.10           ~ 48 0
3 [GMM2008] 41 Y*O 03 28 34.47 +31 17 43.2           ~ 2 0
4 2MASS J03283450+3100510 Y*O 03 28 34.501 +31 00 51.01           ~ 81 0
5 JCMTPP J032834.6+310704 Y*? 03 28 34.53 +31 07 05.5           ~ 36 0
6 [GMM2008] 42 Y*O 03 28 34.85 +31 16 04.5           ~ 2 0
7 IRAS 03255+3103 Y*O 03 28 37.06800 +31 13 31.0044           ~ 96 1
8 2MASS J03283875+3118068 Y*O 03 28 38.754 +31 18 06.83           ~ 15 0
9 [EYG2006] Bolo 30 Y*O 03 28 39.10 +31 06 01.7           ~ 37 0
10 2MASS J03283968+3117321 Y*O 03 28 39.680 +31 17 32.13           ~ 27 1
11 [HFR2007] 55 cor 03 28 40.63 +31 17 56.5           ~ 40 1
12 2MASS J03284323+3110425 Y*O 03 28 43.23096 +31 10 42.5964           ~ 21 0
13 2MASS J03284325+3117330 Or* 03 28 43.2624763920 +31 17 33.138111588     17.78 16.45 15.07 K7.0 66 1
14 2MASS J03284355+3117364 Or* 03 28 43.5578149047 +31 17 36.484222805     19.66 17.87 15.28 M5.0 47 1
15 2MASS J03284407+3120528 Y*O 03 28 44.0787175584 +31 20 52.824640200           M7.5 27 0
16 IRAS 03256+3055 Y*O 03 28 45.306 +31 05 42.05           ~ 55 3
17 EM* LkHA 351 Or* 03 28 46.1912591184 +31 16 38.570613600           M3.0 39 0
18 2MASS J03284764+3124061 Y*O 03 28 47.6388577008 +31 24 06.091635168           M4.0 27 0
19 2MASS J03284782+3116552 Or* 03 28 47.8278036552 +31 16 55.188633828           M8.0 41 0
20 2MASS J03284872+3116086 Y*O 03 28 48.721 +31 16 08.65           ~ 15 0
21 2MASS J03285101+3118184 Or* 03 28 51.0207820727 +31 18 18.523426244           M4.5 59 0
22 2MASS J03285105+3116324 Or* 03 28 51.0662927448 +31 16 32.503719144           M4.0 38 0
23 ATO J052.2133+31.3318 Y*O 03 28 51.1931459388 +31 19 54.821949927           K7.0 49 0
24 2MASS J03285129+3117397 Y*O 03 28 51.291 +31 17 39.79           ~ 28 0
25 2MASS J03285213+3115471 Y*O 03 28 52.1389654200 +31 15 47.212652304           M7.0 38 0
26 2MASS J03285216+3122453 Or* 03 28 52.1643824544 +31 22 45.296467464           M2.5 41 0
27 ASR 46 Or* 03 28 52.9119749544 +31 16 26.538089376           M6V 38 0
28 [GMM2008] 56 Y*O 03 28 53.58 +31 12 14.7           ~ 5 0
29 2MASS J03285392+3118092 Y*O 03 28 53.92752 +31 18 09.2808           K7.0 36 0
30 ASR 42 Y*O 03 28 54.0810046752 +31 16 54.335516196       18.6   M6.5V 40 0
31 2MASS J03285461+3116512 Y*O 03 28 54.6195638064 +31 16 51.237210540       18.5   M1.0 43 0
32 ASR 109 LM* 03 28 54.928 +31 15 29.01           M7.9 9 0
33 2MASS J03285505+3116287 Y*O 03 28 55.0668013800 +31 16 28.839735984       19.7   M3.0 27 0
34 2MASS J03285514+3116247 Y*O 03 28 55.1463362328 +31 16 24.828254040       17.7   M0.5 28 0
35 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 513 3
36 JCMTPP J032856.3+311913 Y*O 03 28 56.12 +31 19 08.4           ~ 18 0
37 2MASS J03285630+3122279 Y*O 03 28 56.30016 +31 22 27.9264           M2.0 36 0
38 2MASS J03285663+3118356 Or* 03 28 56.6379056568 +31 18 35.598810888           M1.5 62 0
39 MBO 91 LM* 03 28 56.9383156848 +31 20 48.607532808           M7V 7 0
40 2MASS J03285694+3116222 Y*O 03 28 56.9552105184 +31 16 22.342093896       18.2   M2.5 49 0
41 [GMM2008] 22 Y*O 03 28 57.09 +31 21 25.1           ~ 3 0
42 ASR 64 Y*O 03 28 57.11 +31 19 11.9           M7.3 16 0
43 ASR 17 Y*O 03 28 57.1676383896 +31 15 34.509523824           M7.5V 25 0
44 BD+30 547 Y*O 03 28 57.2114503248 +31 14 19.076151444   10.73 9.98 9.1   G4V 117 1
45 2MASS J03285769+3119481 Y*O 03 28 57.6951247200 +31 19 48.025172892           M3.5 24 0
46 [GMM2008] 24 Y*O 03 28 57.99 +31 20 52.1           ~ 1 0
47 MBO 73 Y*O 03 28 58.24200 +31 22 09.3468           M6.5V 12 0
48 2MASS J03285824+3122021 Y*O 03 28 58.2489592896 +31 22 02.105061456           M6 22 0
49 2MASS J03285842+3122175 Y*O 03 28 58.420 +31 22 17.54           ~ 41 0
50 MBO 80 Y*O 03 28 58.4258768520 +31 22 56.728252560           M7V 8 0
51 ASR 106 Y*O 03 28 59.30640 +31 15 48.5172           K2.0 61 0
52 2MASS J03285933+3120082 Y*O 03 28 59.339 +31 20 08.26           ~ 6 0
53 EM* LkHA 353 Or* 03 28 59.5499346456 +31 21 46.711115676           M3.1 43 0
54 MBO 78 LM* 03 29 00.153 +31 21 09.21           M5 11 0
55 [SK2001] 1 Y*O 03 29 00.55 +31 12 00.8           ~ 62 1
56 2MASS J03290149+3120208 Y*O 03 29 01.492 +31 20 20.84           ~ 43 0
57 ASR 3 Y*O 03 29 02.1578803464 +31 16 11.433429732           M4V 19 0
58 2MASS J03290268+3119056 Y*O 03 29 02.690 +31 19 05.62           ~ 8 0
59 2MASS J03290279+3122172 Y*O 03 29 02.791 +31 22 17.29           M9.3 14 0
60 2MASS J03290313+3122381 Y*O 03 29 03.1361451264 +31 22 38.079631200           M2.5 27 0
61 2MASS J03290320+3125451 LM* 03 29 03.2128563360 +31 25 44.931401652           M7.1 14 0
62 2MASS J03290332+3123148 Y*O 03 29 03.32 +31 23 14.8           ~ 25 0
63 ASR 63 Y*O 03 29 03.39816 +31 18 39.9528           M7.5V 18 0
64 2MASS J03290342+3125143 Y*O 03 29 03.424 +31 25 14.37           ~ 6 0
65 V* V512 Per Or* 03 29 03.7578170808 +31 16 03.947525688           M3.5 419 0
66 2MASS J03290386+3121487 Or* 03 29 03.8590044645 +31 21 48.679245240     17.0     K6.0 49 0
67 2MASS J03290394+3123307 LM* 03 29 03.949 +31 23 30.80           M8.3 6 0
68 [SDA2014] West40 Y*O 03 29 04.06 +31 14 46.5           ~ 68 0
69 ASR 105 LM* 03 29 04.662 +31 16 59.15           M6 21 0
70 2MASS J03290472+3111348 Y*O 03 29 04.729 +31 11 34.90           ~ 17 0
71 2MASS J03290493+3120385 Y*O 03 29 04.936 +31 20 38.55           ~ 14 0
72 2MASS J03290566+3120107 Y*O 03 29 05.664 +31 20 10.72           ~ 7 0
73 2MASS J03290567+3121338 Y*O 03 29 05.671 +31 21 33.84           ~ 7 0
74 ASR 7 Y*O 03 29 05.75376 +31 16 39.6948           A3 33 0
75 2MASS J03290631+3113464 Y*O 03 29 06.318 +31 13 46.42           ~ 20 0
76 2MASS J03290693+3129571 LM* 03 29 06.935 +31 29 57.13           M7.0 5 0
77 [LAL96] 213 Y*O 03 29 07.739 +31 21 57.52           ~ 70 0
78 2MASS J03290794+3122515 Y*O 03 29 07.9451430600 +31 22 51.518564724           M2.5 26 0
79 2MASS J03290895+3122562 Y*O 03 29 08.95344 +31 22 56.2656           ~ 20 0
80 2MASS J03290896+3126239 Y*O 03 29 08.9714739408 +31 26 23.959768236           ~ 8 0
81 2MASS J03290907+3121291 Y*O 03 29 09.075 +31 21 29.10           ~ 11 0
82 2MASS J03290908+3123056 Y*O 03 29 09.0836580528 +31 23 05.615255976           ~ 13 0
83 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
84 2MASS J03290933+3121042 Y*O 03 29 09.330 +31 21 04.20           ~ 16 0
85 SSTc2d J032909.4+311413 Y*O 03 29 09.41 +31 14 14.1           ~ 12 0
86 2MASS J03290948+3127209 Y*O 03 29 09.4778835768 +31 27 20.920112064           M5.0 18 0
87 2MASS J03290964+3122564 Y*O 03 29 09.6424749933 +31 22 56.397116576     17.0     M3.1 36 0
88 2MASS J03291018+3127159 LM* 03 29 10.1796171168 +31 27 15.898818960           M7.4 6 0
89 LZK 12 Or* 03 29 10.393560 +31 21 59.19408   15.814 14.497 14.636   B5:V+F2: 147 0
90 2MASS J03291046+3123348 Y*O 03 29 10.46016 +31 23 34.8396           ~ 19 0
91 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 770 1
92 [JJK2007] 23 Y*O 03 29 10.68 +31 18 20.6           ~ 65 1
93 ASR 23 Y*O 03 29 10.8224321760 +31 16 42.675444408           M0- 21 0
94 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 489 0
95 ASR 32 Y*O 03 29 11.25 +31 18 31.7           ~ 69 1
96 2MASS J03291132+3122570 Y*O 03 29 11.3219908728 +31 22 56.992183896           ~ 11 0
97 ASR 85 Y*O 03 29 11.63880 +31 20 37.4784           ~ 17 0
98 2MASS J03291177+3126095 Y*O 03 29 11.7737851008 +31 26 09.328679592           ~ 23 0
99 2MASS J03291188+3121271 Y*O 03 29 11.883 +31 21 27.13           ~ 17 0
100 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 625 0
101 NAME IRAS 4B1 South Y*O 03 29 12.06 +31 13 01.7           ~ 47 1
102 2MASS J03291290+3123293 Y*O 03 29 12.9047250360 +31 23 29.347422432           M4.3 27 0
103 2MASS J03291294+3118146 Y*O 03 29 12.945 +31 18 14.61           ~ 42 1
104 ASR 28 LM* 03 29 13.0406889696 +31 17 38.303885508           M8.0 17 0
105 2MASS J03291312+3122529 Y*O 03 29 13.1278616784 +31 22 52.843160064           M3.0 18 0
106 [JCC87] IRAS 4C Y*O 03 29 13.54 +31 13 58.2           ~ 122 1
107 2MASS J03291532+3129346 Y*O 03 29 15.329 +31 29 34.68           ~ 5 0
108 [GMM2008] 108 Y*O 03 29 15.66 +31 19 11.1           ~ 4 0
109 2MASS J03291659+3123495 Y*O 03 29 16.5959397096 +31 23 49.484861880           M3.0 20 0
110 MBO 79 Y*O 03 29 16.8129534984 +31 23 25.188242064           M2.5V 16 0
111 JCMTPP J032917.2+312746 Y*O 03 29 17.17 +31 27 46.5           ~ 43 0
112 EM* LkHA 270 TT* 03 29 17.6758022904 +31 22 44.892332544   16.344 14.639 13.994   K2/3IIIe 89 0
113 ASR 80 Y*O 03 29 17.7631219248 +31 19 48.137840652           M6.5V 18 0
114 SSTc2d J032918.3+312320 Y*O 03 29 18.26 +31 23 19.9           ~ 28 1
115 2MASS J03291865+3120178 Y*O 03 29 18.658 +31 20 17.81           ~ 15 0
116 EM* LkHA 354 Or* 03 29 18.7266187427 +31 23 25.391102685     15.05     K4IVe 51 0
117 2MASS J03292003+3124076 Y*O 03 29 20.036 +31 24 07.65           ~ 37 1
118 HH 17 Y*O 03 29 20.4245077872 +31 18 34.234290072     16.38     K6.0 61 0
119 2MASS J03292130+3123464 Y*O 03 29 21.30144 +31 23 46.4928           ~ 12 0
120 2MASS J03292155+3121104 Y*O 03 29 21.5557894333 +31 21 10.409454948           M4.5 38 0
121 EM* LkHA 271 Or* 03 29 21.8747728752 +31 15 36.242125668   14.0 14.3     K4.0 74 0
122 [GMM2008] 38 Y*O 03 29 22.28 +31 13 54.5           ~ 6 0
123 EM* LkHA 355 Or* 03 29 23.1507312768 +31 20 30.307187076           M4.5 40 0
124 MBO 54 Y*O 03 29 23.2319668896 +31 26 53.115140616           M5.5V 33 0
125 SSTc2d J032923.5+313330 Y*O 03 29 23.47 +31 33 29.5           ~ 42 1
126 ASR 79 Y*O 03 29 24.0886223107 +31 19 57.383186997           M2.5V 54 0
127 ATO J052.3580+31.4444 Or* 03 29 25.9204996396 +31 26 40.073601979     14.55     M2.2 49 0
128 GSC 02342-00571 Or* 03 29 26.8189696128 +31 26 47.460883488   16.42 14.97 14.65   K7.5 32 0
129 2MASS J03292798+3125109 Y*O 03 29 27.986 +31 25 10.95           ~ 5 0
130 2MASS J03292925+3118347 TT* 03 29 29.2619320482 +31 18 34.727492781           K7.5 50 0
131 2MASS J03292978+3121027 Y*O 03 29 29.7853459200 +31 21 02.537459208           M4.5 24 0
132 EM* LkHA 356 Or* 03 29 30.3875356002 +31 19 03.402908912           M2.6 41 0
133 [GMM2008] 39 Y*O 03 29 31.54 +31 25 27.8           ~ 3 0
134 EM* LkHA 357 Or* 03 29 32.5638346200 +31 24 36.953550288           M3.5 35 0
135 MBO 53 Or* 03 29 32.8676493712 +31 27 12.582093104           M5V 37 0
136 [GMM2008] 129 Y*O 03 29 35.70 +31 21 08.6           M8.2 4 0
137 2MASS J03293764+3102492 Y*O 03 29 37.6317383568 +31 02 49.101594180           M6.1 11 0
138 2MASS J03293773+3122024 Y*O 03 29 37.7206548408 +31 22 02.570224440           M7.6 27 0
139 2MASS J03294415+3119478 LM* 03 29 44.154 +31 19 47.89           M8 11 0
140 2MASS J03295403+3120529 Or* 03 29 54.0302250726 +31 20 53.027037537           M3.0 39 0
141 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
142 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
143 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
144 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
145 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0
146 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
147 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
148 TYC 7421-814-1 * 18 58 49.9603017984 -36 48 55.221019704   12.41 10.96     ~ 3 0
149 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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