2004A&A...426..941B


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.25CET23:28:44

2004A&A...426..941B - Astronomy and Astrophysics, volume 426, 941-949 (2004/11-2)

The dense molecular cores in the IRAS 21391+5802 region.

BELTRAN M.T., GIRART J.M., ESTALELLA R. and HO P.T.P.

Abstract (from CDS):

We present a detailed kinematical study and modeling of the emission of the molecular cores at ambient velocities surrounding IRAS 21391+5802, an intermediate-mass protostar embedded in IC 1396N. The high-density gas emission is found in association with three dense cores associated with the YSOs BIMA 1, BIMA 2, and BIMA 3. The CS (J=5->4) and CH3OH (J=5–1->4–1) emission around BIMA 1 has been modeled by considering a spatially infinitely thin ring seen edge-on by the observer. From the model we find that CS is detected over a wider radii range than CH3OH. A bipolar outflow is detected in the CS (J=2->1) line centered near BIMA 1. This outflow could be powered by a yet undetected YSO, BIMA 1W, or alternatively could be part of the BIMA 1 molecular outflow. The CS and CH3OH emission associated with the intermediate-mass protostar BIMA 2 is highly perturbed by the bipolar outflow even at cloud velocities, confirming that the protostar is in a very active stage of mass loss. For YSO BIMA 3 the lack of outflow and of clear evidence of infall suggests that both outflow and infall are weaker than in BIMA 1, and that BIMA 3 is probably a more evolved object.

Abstract Copyright:

Journal keyword(s): ISM: individual objects: IC 1396N - ISM: individual objects: IRAS 21391+5802 - ISM: jets and outflows - ISM: molecules - radio lines: ISM - stars: formation

Nomenclature: Text: [BGE2002] BIMA 1W added.

Simbad objects: 9

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Number of rows : 9

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 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 405 3
2 LDN 1554 DNe 05 20.0 +26 13           ~ 12 0
3 IRAS 05361+3539 Y*O 05 39 28.64016 +35 40 36.9588           ~ 35 0
4 HH 80N HH 18 19 19.74 -20 41 34.9           ~ 37 0
5 [BGE2002] BIMA 1W ? 21 40 39.00 +58 16 05.1           ~ 1 0
6 [BGE2002] BIMA 1 Y*O 21 40 39.67 +58 16 06.2           ~ 15 0
7 [BGE2002] BIMA 2 Y*O 21 40 42.36 +58 16 09.7           ~ 116 0
8 NAME IC 1396 North CGb 21 40 42.6537 +58 16 01.882           ~ 182 1
9 [BGE2002] BIMA 3 Y*O 21 40 42.77 +58 16 01.1           ~ 16 0

    Equat.    Gal    SGal    Ecl

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2021.01.25-23:28:44

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