2000A&A...361..660P

Query : 2000A&A...361..660P

2000A&A...361..660P - Astronomy and Astrophysics, volume 361, 660-670 (2000/9-2)

Young stellar clusters and H2 nebulosities in S233 IR.

PORRAS A., CRUZ-GONZALEZ I. and SALAS L.

Abstract (from CDS):

We present an infrared photometric study of the star formation region associated to IRAS 05358+3543, hereafter designated S233 IR. Several manifestations of star formation activity are present in S233 IR: masers, molecular outflow, GMC core, YSOs, young stellar clusters and an IRAS source. The paper includes photometric J, H, K and H2 (2.12µm) images and scanning Fabry-Perot observations to study H2 kinematics. In the 3.6'x3.6'observed field, two distinct young stellar clusters separated by 0.5 pc are found, one being much redder than the other by AV∼7mag. A collection of PMS objects and several H2 nebulosities associated to the younger and redder NE cluster are found. Two deeply embedded jet/counter-jet structures, produced by shocked H2 gas, are detected near the core of the molecular outflow. Possible exciting source candidates of the molecular outflow and H2 nebula are discussed. The velocity field of H2 gas shows that the bulk of the emission occurs within -36.9 to 2.3km/s. Individual spectra of H2 nebulosities show peak velocities consistent with the rest velocity of the GMC and H2O maser peak velocities. Luminosity function histograms are used to obtain a crude age estimate for cluster and field stars: ≲2 Myr for NE cluster, 3 Myr for SW cluster and 6 Myr for field (distributed population) stars; indicating at least two star formation stages and a distributed population of young stars. Finally, from PMS isochrones and NIR photometry, taking care of completeness limits, we estimate stellar masses to study the IMF. A turnover for low-mass-stars is found for the SW cluster, while field stars show a Salpeter IMF.

Abstract Copyright: ∼

Journal keyword(s): stars: early-type - stars: formation - stars: mass-loss - ISM: individual objects: S233 IR - ISM: jets and outflows

VizieR on-line data: <Available at CDS (J/A+A/361/660): table1.dat table1.ps table1.tex>

Nomenclature: Table 1: [PCS2000] IR NN (Nos 1-98). Fig.6, Table 2: [PCS2000] ANA (Nos N1-N6, N1A-N1B, N3A-N3D, N4A-N4C, N5A-N5B).

CDS comments: S233 = SH 2-233, S233 IR = NAME SH 2-233 IR.

Simbad objects: 124

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Number of rows : 124
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 LBN 126.70-00.80 HII 01 22 58.00 +61 48 16.0           ~ 85 3
2 NAME SH 2-187 IRS IR 01 23 15.0 +61 48 47           ~ 14 0
3 NAME Per Arm PoG 03 30 +45.0           ~ 1513 0
4 SH 2-233 HII 05 38 31.5 +35 51 19           ~ 66 1
5 2MASS J05390375+3545280 * 05 39 03.76 +35 45 28.0           ~ 1 0
6 [PCS2000] IR 12 * 05 39 03.9209928648 +35 44 30.335207856           ~ 2 0
7 [PCS2000] IR 69 IR 05 39 04.0 +35 46 13           ~ 1 0
8 [PCS2000] IR 88 * 05 39 04.0094736960 +35 47 07.694595564           ~ 1 0
9 2MASS J05390448+3545293 * 05 39 04.4813603040 +35 45 29.221901856           ~ 1 0
10 [PCS2000] IR 47 * 05 39 05.2 +35 45 24           ~ 1 0
11 [PCS2000] IR 73 IR 05 39 05.5 +35 46 27           ~ 1 0
12 2MASS J05390565+3546507 * 05 39 05.6386158048 +35 46 50.605688640           ~ 1 0
13 2MASS J05390566+3544420 * 05 39 05.6684203440 +35 44 42.149313600           ~ 1 0
14 [PCS2000] IR 34 * 05 39 05.7 +35 45 02           ~ 1 0
15 2MASS J05390607+3544298 * 05 39 06.08 +35 44 29.8           ~ 1 0
16 2MASS J05390614+3545278 * 05 39 06.1484696832 +35 45 27.838680336           ~ 1 0
17 2MASS J05390616+3545493 * 05 39 06.1687378488 +35 45 49.384319940           ~ 1 0
18 [PCS2000] IR 45 * 05 39 06.2 +35 45 19           ~ 1 0
19 [PCS2000] IR 5 * 05 39 06.7 +35 44 22           ~ 1 0
20 [PCS2000] IR 50 * 05 39 06.7 +35 45 25           ~ 1 0
21 [PCS2000] IR 51 * 05 39 07.0 +35 45 26           ~ 1 0
22 2MASS J05390747+3544546 * 05 39 07.4731738896 +35 44 54.636935748           ~ 1 0
23 2MASS J05390775+3546155 * 05 39 07.7906313024 +35 46 15.777267492           ~ 1 0
24 [PCS2000] IR 35 IR 05 39 07.9 +35 45 09           ~ 1 0
25 2MASS J05390797+3545280 * 05 39 07.98 +35 45 28.1           ~ 1 0
26 [PCS2000] IR 4 IR 05 39 08.2 +35 44 15           ~ 1 0
27 [PCS2000] IR 14 IR 05 39 08.2 +35 44 33           ~ 1 0
28 2MASS J05390835+3545095 * 05 39 08.35 +35 45 09.6           ~ 1 0
29 [PCS2000] IR 26 * 05 39 08.4 +35 44 54           ~ 1 0
30 2MASS J05390850+3546462 * 05 39 08.5355364240 +35 46 46.284500244           ~ 2 0
31 [PCS2000] IR 25 * 05 39 08.7 +35 44 53           ~ 1 0
32 [PCS2000] IR 33 * 05 39 08.9 +35 45 11           ~ 1 0
33 2MASS J05390891+3545062 Y*O 05 39 08.9155163400 +35 45 06.275864772           ~ 2 0
34 2MASS J05390906+3545262 * 05 39 09.07 +35 45 26.2           ~ 1 0
35 [PCS2000] IR 29 * 05 39 09.1 +35 45 00           ~ 1 0
36 2MASS J05390916+3545031 Y*O 05 39 09.1696216848 +35 45 03.115774224           ~ 2 0
37 2MASS J05390916+3544225 Y*O 05 39 09.1741983960 +35 44 22.657178400           ~ 4 0
38 [PCS2000] IR 19 * 05 39 09.3 +35 44 48           ~ 1 0
39 [PCS2000] N05B IR 05 39 09.48 +35 45 29.9           ~ 3 0
40 2MASS J05390954+3545057 Y*O 05 39 09.5334985728 +35 45 06.022963476           ~ 3 0
41 [PCS2000] IR 20 * 05 39 09.6 +35 44 47           ~ 1 0
42 IRAS 05358+3543 Y*O 05 39 09.92 +35 45 17.2           ~ 164 0
43 [PCS2000] IR 39 * 05 39 10.1 +35 45 08           ~ 2 0
44 2MASS J05391014+3544282 Y*O 05 39 10.1558144472 +35 44 28.241061504           ~ 2 0
45 2MASS J05391035+3547081 * 05 39 10.35 +35 47 08.2           ~ 1 0
46 [PCS2000] IR 40 * 05 39 10.4 +35 45 13           ~ 2 0
47 2MASS J05391041+3545034 Y*O 05 39 10.4178393144 +35 45 03.522645072       17.23   ~ 3 0
48 [PCS2000] N03A IR 05 39 10.42 +35 46 19.6           ~ 2 0
49 2MASS J05391082+3546496 * 05 39 10.8344080296 +35 46 49.801261512           ~ 1 0
50 [PCS2000] N03D IR 05 39 10.88 +35 46 04.8           ~ 3 0
51 [PCS2000] N03B IR 05 39 10.96 +35 46 13.9           ~ 2 0
52 [PCS2000] IR 16 * 05 39 11.0 +35 44 39           ~ 1 0
53 2MASS J05391104+3544129 * 05 39 11.0506753176 +35 44 12.989450220           ~ 2 0
54 2MASS J05391127+3545226 Y*O 05 39 11.273 +35 45 22.64           ~ 2 0
55 [PCS2000] N03C IR 05 39 11.30 +35 46 07.2           ~ 2 0
56 2MASS J05391133+3546272 * 05 39 11.34 +35 46 27.2           ~ 1 0
57 2MASS J05391158+3546222 Y*O 05 39 11.583 +35 46 22.21           ~ 2 0
58 2MASS J05391158+3545091 Y*O 05 39 11.5905418344 +35 45 09.220168836           ~ 2 0
59 [PCS2000] IR 81 IR 05 39 11.6 +35 46 44           ~ 2 0
60 2MASS J05391162+3545311 NIR 05 39 11.62 +35 45 31.2           ~ 1 0
61 [PCS2000] N01B IR 05 39 11.69 +35 46 43.8           ~ 2 0
62 [PCS2000] N01 IR 05 39 11.69 +35 46 43.8           ~ 5 0
63 [PCS2000] N01A IR 05 39 11.69 +35 46 43.8           ~ 2 0
64 [PCS2000] N04C IR 05 39 11.83 +35 45 26.2           ~ 2 0
65 [PCS2000] N05 IR 05 39.2 +35 45           ~ 2 0
66 [PCS2000] N04 IR 05 39.2 +35 45           ~ 2 0
67 [PCS2000] IR 55 * 05 39 12.0 +35 45 43           ~ 1 0
68 [PCS2000] N03 IR 05 39.2 +35 46           ~ 2 0
69 [PCS2000] IR 77 IR 05 39 12.0 +35 46 32           ~ 2 0
70 [PCS2000] N04B IR 05 39 12.08 +35 45 46.7           ~ 2 0
71 [PCS2000] IR 90 * 05 39 12.1 +35 47 08           ~ 1 0
72 2MASS J05391218+3545156 NIR 05 39 12.19 +35 45 15.7           ~ 1 0
73 2MASS J05391248+3546096 * 05 39 12.48 +35 46 09.7           ~ 1 0
74 [PCS2000] IR 18 * 05 39 12.5 +35 44 42           ~ 1 0
75 [PCS2000] IR 93 IR 05 39 12.7 +35 45 53           ~ 5 0
76 [PCS2000] IR 22 * 05 39 12.8 +35 44 51           ~ 1 0
77 2MASS J05391280+3545430 * 05 39 12.80 +35 45 43.0           ~ 2 0
78 [PCS2000] IR 23 * 05 39 13.0 +35 44 58           ~ 1 0
79 SH 2-231 Y*O 05 39 13.2 +35 45 48           ~ 132 0
80 [PCS2000] N04A IR 05 39 13.29 +35 45 53.6           ~ 3 0
81 [PCS2000] IR 24 * 05 39 13.3 +35 44 58           ~ 1 0
82 [PCS2000] IR 94 IR 05 39 13.3 +35 45 50           ~ 1 0
83 [PCS2000] IR 58 * 05 39 13.3 +35 45 54           ~ 4 0
84 2MASS J05391331+3545226 * 05 39 13.31 +35 45 22.6           ~ 1 0
85 2MASS J05391335+3544170 Y*O 05 39 13.352 +35 44 17.02           ~ 3 0
86 [PCS2000] IR 59 * 05 39 13.6 +35 46 01           ~ 1 0
87 2MASS J05391361+3544118 * 05 39 13.6163749296 +35 44 11.918388300           ~ 1 0
88 2MASS J05391362+3546384 * 05 39 13.6386341808 +35 46 38.580706236           ~ 1 0
89 2MASS J05391367+3547067 * 05 39 13.6848576144 +35 47 06.798719040           ~ 1 0
90 [PCS2000] IR 74 * 05 39 13.7 +35 46 29           ~ 1 0
91 [PCS2000] IR 66 * 05 39 13.9 +35 46 18           ~ 1 0
92 [PCS2000] IR 60 * 05 39 14.0 +35 46 02           ~ 1 0
93 2MASS J05391404+3545471 NIR 05 39 14.04 +35 45 47.1           ~ 1 0
94 2MASS J05391405+3546332 * 05 39 14.06 +35 46 33.2           ~ 1 0
95 [PCS2000] N05A IR 05 39 14.14 +35 44 36.9           ~ 2 0
96 2MASS J05391415+3544259 * 05 39 14.1569714088 +35 44 26.078227296           ~ 1 0
97 [PCS2000] N06 IR 05 39 14.20 +35 44 36.3           ~ 5 0
98 2MASS J05391427+3546402 * 05 39 14.28 +35 46 40.2           ~ 1 0
99 [PCS2000] IR 8 * 05 39 14.4 +35 44 31           ~ 1 0
100 [PCS2000] IR 9 * 05 39 14.6 +35 44 36           ~ 1 0
101 2MASS J05391466+3545238 Y*O 05 39 14.662 +35 45 23.85           ~ 2 0
102 [PCS2000] IR 43 * 05 39 14.7439627080 +35 45 13.473001656           ~ 1 0
103 2MASS J05391473+3546431 * 05 39 14.7447602136 +35 46 43.179756312           ~ 1 0
104 2MASS J05391475+3545396 Y*O 05 39 14.750 +35 45 39.65           ~ 2 0
105 2MASS J05391479+3546018 Y*O 05 39 14.795 +35 46 01.88           ~ 3 0
106 [PCS2000] IR 13 * 05 39 15.5 +35 44 32           ~ 1 0
107 [PCS2000] IR 82 IR 05 39 16.5 +35 46 43           ~ 1 0
108 [PCS2000] IR 27 IR 05 39 16.7 +35 44 54           ~ 1 0
109 2MASS J05391676+3545593 PM* 05 39 16.7885481048 +35 45 59.342840244           ~ 1 0
110 [PCS2000] IR 91 * 05 39 16.7960027136 +35 47 08.704787244           ~ 1 0
111 [PCS2000] IR 28 * 05 39 17.0 +35 44 54           ~ 1 0
112 [PCS2000] IR 61 * 05 39 17.1 +35 45 52           ~ 1 0
113 [PCS2000] IR 92 * 05 39 17.1 +35 47 11           ~ 1 0
114 2MASS J05391721+3547019 NIR 05 39 17.2334235648 +35 47 02.026230360           ~ 1 0
115 2MASS J05391729+3545009 * 05 39 17.29 +35 45 01.0           ~ 1 0
116 [PCS2000] IR 67 IR 05 39 17.3 +35 46 13           ~ 1 0
117 [PCS2000] IR 68 * 05 39 17.7 +35 46 17           ~ 1 0
118 2MASS J05391814+3546085 Y*O 05 39 18.1505591520 +35 46 08.572658916           ~ 2 0
119 2MASS J05391869+3546552 * 05 39 18.6803921064 +35 46 55.092846108           ~ 1 0
120 SH 2-235 B HII 05 40 52.366 +35 41 29.43   17       ~ 179 1
121 SH 2-235 HII 05 41.1 +35 50           ~ 219 0
122 SH 2-232 HII 05 42 28 +36 11.4           ~ 54 0
123 NAME SH 2-233 IR NE Cluster Cl* ~ ~           ~ 3 0
124 NAME SH 2-233 IR SW Cluster Cl* ~ ~           ~ 3 0

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