2007ApJ...667L.179T

Query : 2007ApJ...667L.179T

2007ApJ...667L.179T - Astrophys. J., 667, L179-L182 (2007/October-1)

A dense microcluster of class 0 protostars in NGC 2264 D-MM1.

TEIXEIRA P.S., ZAPATA L.A. and LADA C.J.

Abstract (from CDS):

We present sensitive and high angular resolution (∼1") 1.3 mm continuum observations of the dusty core D-MM1 in the Spokes cluster in NGC 2264 using the Submillimeter Array. A dense microcluster of seven Class 0 sources was detected in a 20"x20" region with masses between 0.4 and 1.2 M☉ and deconvolved sizes of ∼600 AU. We interpret the 1.3 mm emission as arising from the envelopes of the Class 0 protostellar sources. The mean separation of the 11 known sources (SMA Class 0 and previously known infrared sources) within D-MM1 is considerably smaller than the characteristic spacing between sources in the larger Spokes cluster and is consistent with hierarchical thermal fragmentation of the dense molecular gas in this region.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - Stars: Planetary Systems: Protoplanetary Disks - Stars: Formation - Techniques: Interferometric

Nomenclature: Fig.1, Table 1: [TZL2007] SMA N (Nos 1-7).

Simbad objects: 27

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Number of rows : 27
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 NAME LDN 1455 IRS 1 cor 03 27 39.08 +30 13 03.1           ~ 173 0
2 NAME HH 240/241 DNe 05 19 48.9 -05 52 05           ~ 115 1
3 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
4 NAME RNO 43 FIR HH 05 32 23.0 +12 49 54           ~ 49 0
5 NAME Mon I MoC 06 35 +10.1           ~ 268 0
6 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
7 Cl* NGC 2264 FMS 2-865 Y*O 06 40 57.973 +09 36 39.38           ~ 8 0
8 [YTL2006] 30 ? 06 41 05.16 +09 34 10.2           ~ 1 0
9 V* V812 Mon Or* 06 41 05.3635204704 +09 33 13.447329444 17.21 16.38 15.19 14.54 13.71 K4V 55 0
10 [YTL2006] 35 ? 06 41 05.50 +09 34 11.6           ~ 1 0
11 CXOANC J064105.5+093407 X 06 41 05.550 +09 34 07.68           ~ 2 0
12 [TZL2007] SMA 1 smm 06 41 05.60 +09 34 08.0           ~ 2 0
13 [TZL2007] SMA 2 smm 06 41 05.64 +09 34 05.7           ~ 3 0
14 [TZL2007] SMA 3 smm 06 41 05.69 +09 34 06.7           ~ 3 0
15 JCMTSE J064105.8+093407 smm 06 41 05.8 +09 34 09           ~ 18 0
16 [TZL2007] SMA 4 smm 06 41 05.87 +09 34 11.7           ~ 2 0
17 [YTL2006] 45 ? 06 41 05.93 +09 34 04.8           ~ 1 0
18 [TZL2007] SMA 5 smm 06 41 05.98 +09 34 09.8           ~ 3 0
19 2MASS J06410598+0934115 Y*? 06 41 05.98992 +09 34 11.5356           ~ 3 0
20 [TZL2007] SMA 6 smm 06 41 06.09 +09 34 08.6           ~ 3 0
21 [TZL2007] SMA 7 smm 06 41 06.16 +09 34 09.5           ~ 2 0
22 2MASS J06410642+0934099 Y*O 06 41 06.42120 +09 34 09.9948           ~ 4 0
23 NAME Mon OB1 D PoC 06 41 09.9 +09 34 34           ~ 64 1
24 QSO B0736+01 Bla 07 39 18.03389906 +01 37 04.6177501   16.90 16.47 16.19   ~ 738 1
25 IRAS 18148-0440 Y*O 18 17 29.94 -04 39 39.3           ~ 97 0
26 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 106 1
27 LDN 1177 DNe 21 17 38.62 +68 17 34.0           ~ 95 1

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