2000ApJ...545..340L


Query : 2000ApJ...545..340L

2000ApJ...545..340L - Astrophys. J., 545, 340-352 (2000/December-2)

Pre-Orion cores in the Trifid nebula.

LEFLOCH B. and CERNICHARO J.

Abstract (from CDS):

The Trifid Nebula is a young H II region undergoing a burst of star formation. This article reports on far-infrared and millimeter continuum and line observations of several massive and bright protostellar sources in the vicinity of the exciting star of the nebula, just behind the ionization front. These objects are probably young protostars (class 0) and are associated with very massive cores (M∼8-90 M) powering young energetic outflows. Analysis of the far-infrared emission in the 45-200 µm range from the Infrared Space Observatory (ISO) LWS data shows that they are embedded in cold dense material. Inspection of their physical properties suggest that they are similar to the dust protostellar cores observed in Orion, although at an earlier evolutionary ``pre-Orion'' stage. The cores are embedded in a compressed layer of dense gas. Based on comparison with the models, we find that the cores could have formed from the fragmentation of the layer and that the birth of the protostars was triggered by the expansion of the Trifid Nebula.

Abstract Copyright:

Journal keyword(s): ISM: individual (Trifid Nebula) - ISM: Jets and Outflows - ISM: Molecules - Stars: Formation

Nomenclature: Table 1: [CLC98] TCNa (Nos TC4b, TC4c) added.

Simbad objects: 26

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Number of rows : 26
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 IRAS F03226+3033 Y*O 03 25 38.83 +30 44 06.2           ~ 319 0
2 [SDA2014] West4 Y*O 03 25 38.83 +30 44 06.2           ~ 245 1
3 IRAS 03258+3104 Y*O 03 28 55.30 +31 14 27.8           ~ 160 1
4 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 421 3
5 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 639 1
6 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 473 0
7 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1279 1
8 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 573 0
9 [NW2007] OrionAN-0535136-52409 Y*? 05 35 13.57 -05 24 08.2           ~ 24 1
10 [MSB86] CS 1 IR 05 35 15.26 -05 22 05.1           ~ 10 0
11 M 42 HII 05 35 17.3 -05 23 28           ~ 3829 0
12 OMC 3 MoC 05 35 20.0 -05 01 00           ~ 240 1
13 OMC 2 MoC 05 35 27 -05 10.1           ~ 412 1
14 NAME Ori A MoC 05 38 -07.1           ~ 2788 0
15 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 389 0
16 [SSG2006] MMS002 smm 16 26 26.50 -24 24 30.9           ~ 241 0
17 [CLC98] TC3 PoC 18 02 07 -23 05.2           ~ 11 0
18 [CLC98] TC4 PoC 18 02 12.8 -23 05 47           ~ 12 0
19 [CLC98] TC4b PoC 18 02 14.4 +23 06 47           ~ 4 0
20 [CLC98] TC4c PoC 18 02 17.0 -23 07 13           ~ 3 0
21 HD 164492 Y*O 18 02 23.5527458788 -23 01 51.000902120 6.49 7.49 6.80 7.52   O7.5Vz 215 0
22 [CLC98] TC2 PoC 18 02 28.5 -23 03 57           ~ 12 0
23 M 20 OpC 18 02 42 -22 58.3           ~ 410 1
24 NGC 7129 OpC 21 42 56 +66 06.2     11.5     ~ 240 0
25 NAME NGC 7129 FIR 2 IR 21 44 01.5 +66 03 40           ~ 89 0
26 NAME Cep E HII 23 03 12.779 +61 42 25.75           ~ 160 0

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2021.09.23-05:04:08

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