2007A&A...468L..37F

Query : 2007A&A...468L..37F

2007A&A...468L..37F - Astronomy and Astrophysics, volume 468L37-40 (2007/6-4)

Protostellar clusters in intermediate mass (IM) star forming regions.

FUENTE A., CECCARELLI C., NERI R., ALONSO-ALBI T., CASELLI P., JOHNSTONE D., VAN DISHOECK E.F. and WYROWSKI F.

Abstract (from CDS):

The transition between the low density groups of T Tauri stars and the high density clusters around massive stars occurs in the intermediate-mass (IM) range (M*∼2-8M☉). High spatial resolution studies of IM young stellar objects (YSO) can provide important clues to understand the clustering in massive star forming regions. Our aim is to search for clustering in IM Class 0 protostars. The high spatial resolution and sensitivity provided by the new A configuration of the Plateau de Bure Interferometer (PdBI) allow us to study the clustering in these nearby objects. We have imaged three IM Class 0 protostars (Serpens-FIRS 1, IC 1396 N, CB 3) in the continuum at 3.3 and 1.3mm using the PdBI. The sources have been selected with different luminosity to investigate the dependence of the clustering process on the luminosity of the source. Only one millimeter (mm) source is detected towards the low luminosity source Serpens-FIRS 1. Towards CB 3 and IC1396 N, we detect two compact sources separated by ∼0.05pc. The 1.3mm image of IC 1396 N, which provides the highest spatial resolution, reveal that one of these cores is splitted in, at least, three individual sources.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - stars: individual: Serpens-FIRS 1 - stars: individual: IC 1396 N - stars: individual: CB 3

CDS comments: Paragraph 3 NGC 6336 I is a probable misprint for NGC 6334 I. Fig.2 Some sources [GFG2007] are not readable.

Simbad objects: 43

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Number of rows : 43
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 [CB88] 3-2 MoC 00 28 42.12 +56 41 37.2           ~ 5 0
2 [CB88] 3-1 MoC 00 28 42.17 +56 41 57.4           ~ 6 0
3 LBN 119.83-06.05 MoC 00 28 43.5075 +56 41 56.868           ~ 72 0
4 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
5 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 623 0
6 NAME IRAS 16293-2422B Y*O 16 32 22.63 -24 28 31.8           ~ 352 0
7 NAME IRAS 16293-2422A Y*O 16 32 22.869 -24 28 36.11           ~ 207 0
8 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
9 SH 2-68 N Y*O 18 29 48.09 +01 16 45.0           ~ 161 1
10 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
11 GCNM 23 Y*O 18 29 49.63 +01 15 21.9           ~ 291 2
12 NAME Serpens SMM 4 cor 18 29 57.1 +01 13 15           ~ 143 0
13 NAME SERPENS SMM 3 Y*O 18 29 59.28 +01 14 01.7           ~ 111 1
14 JCMTSE J183000.2+011251 Y*O 18 30 00.4 +01 12 50           ~ 53 0
15 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 837 0
16 HD 206267 Y*O 21 38 57.6195772032 +57 29 20.554016280 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 520 0
17 [OSP2002] BRC 38 2 Or* 21 40 27.3283494888 +58 14 21.256784340   21.11 19.32 17.77 16.37 M1e 13 0
18 CXOU J214028.8+581754 X 21 40 28.807 +58 17 54.62           ~ 2 0
19 ZTF J214031.59+581755.2 Or* 21 40 31.5978273696 +58 17 55.253122188   22.632 19.52 17.94 16.19 M1 10 0
20 CXOU J214032.8+581744 X 21 40 32.870 +58 17 44.29           ~ 2 0
21 2MASS J21403655+5813458 Or* 21 40 36.5621936256 +58 13 45.919734600   20.58 18.43 16.94 15.42 M1e 10 0
22 CXOU J214038.9+581413 X 21 40 38.987 +58 14 13.93           ~ 2 0
23 CXOU J214039.6+581609 Y*O 21 40 39.60 +58 16 09.0           ~ 4 0
24 ATO J325.1712+58.2330 Y*O 21 40 41.1068058696 +58 13 58.987884864   19.41 17.49 16.21 14.73 M1 10 0
25 2MASS J21404115+5812013 Y*O 21 40 41.15688 +58 12 01.3752           ~ 5 0
26 2MASS J21404156+5814255 Or* 21 40 41.5689456672 +58 14 25.669216248   20.91 18.81 17.04 15.69 M0e 10 0
27 CXOU J214041.8+581612 X 21 40 41.816 +58 16 12.35           ~ 2 0
28 [BGE2002] BIMA 2 Y*O 21 40 42.36 +58 16 09.7           ~ 123 0
29 NAME IC 1396 North CGb 21 40 42.6537 +58 16 01.882           ~ 193 1
30 [BGE2002] BIMA 3 Y*O 21 40 42.77 +58 16 01.1           ~ 20 0
31 CXOU J214042.8+581601 X 21 40 42.894 +58 16 01.03           ~ 2 0
32 2MASS J21404365+5816190 Y*O 21 40 43.650 +58 16 19.06           ~ 5 0
33 2MASS J21404433+5815133 Y*? 21 40 44.335 +58 15 13.36           ~ 3 0
34 2MASS J21404485+5815033 Or* 21 40 44.8559626680 +58 15 03.402853056     20.49 18.77 17.09 K5e 7 0
35 2MASS J21404485+5816050 Y*O 21 40 44.857 +58 16 05.03           ~ 5 0
36 CXOU J214045.1+581559 X 21 40 45.183 +58 15 59.82           ~ 2 0
37 2MASS J21404551+5815115 Y*? 21 40 45.5170766400 +58 15 11.608480368           ~ 3 0
38 CXOU J214045.7+581549 X 21 40 45.792 +58 15 49.05           ~ 2 0
39 ZTF J214046.49+581523.1 Y*O 21 40 46.4985194400 +58 15 23.165863236   19.08 17.16 15.90 14.55 K7 7 0
40 2MASS J21404688+5815334 G 21 40 46.8907832448 +58 15 33.444979344           ~ 3 0
41 2MASS J21404803+5815376 Or* 21 40 48.0351741192 +58 15 37.741974732   21.69 19.81 17.90 16.00 M4 8 0
42 CXOU J214048.2+581746 X 21 40 48.202 +58 17 46.04           ~ 2 0
43 2MASS J21404908+5817093 Or* 21 40 49.0940935968 +58 17 09.428337600     21.541   17.932 ~ 7 0

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