2003ApJ...590..932T


Query : 2003ApJ...590..932T

2003ApJ...590..932T - Astrophys. J., 590, 932-943 (2003/June-3)

Interaction between the outflow and the core in IRAM 04191+1522.

TAKAKUWA S., OHASHI N. and HIRANO N.

Abstract (from CDS):

We have carried out mapping observations of the molecular core associated with the young Class 0 protostar, IRAM 04191+1522, in the CH3OH (JK=2K-1K) and C34S (J=2-1) lines, using the 45 m telescope at Nobeyama Radio Observatory. Our observations have revealed that there is a condensation associated with the protostar, elongated in the east-west direction mostly perpendicular to the axis of the associated CO outflow. Its size and mass are estimated to be 0.07x0.04 pc and 2.3 M, respectively, from the CH3OH data. In addition to the elongated envelope, two compact (∼0.03 pc) condensations were found in the CH3OH line at the southern edge of the elongated envelope, where the blueshifted CO outflow emerging from the protostar is located. In contrast to the elongated envelope, those compact CH3OH condensations show much larger line width (up to 2.0 km/s), with centroid velocities blueshifted by ∼0.8 km/s. The compact condensations have momenta (∼0.06 Mkm/s) comparable to that of the blueshifted molecular outflow. In addition, they are gravitationally unbound, and most probably will dissipate eventually. These results suggest that the compact condensations are probably formed in the course of interaction between the outflow and the ambient gas surrounding the protostar and that such interaction may cause dissipation of a part of the ambient gas. No drastic, localized enhancement of the CH3OH abundance is, however, observed toward the compact condensations, implying that there seems to be no significant shock heating at the compact condensations, in spite of the interaction with the outflow. This may be because the CO outflow velocity (<10 km/s) is too low to cause effective heating to release CH3OH on dust grains into the gas phase.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - ISM: Individual: Alphanumeric: IRAM 04191+1522 - ISM: Jets and Outflows - ISM: Molecules - Stars: Formation - Stars: Mass Loss

Simbad objects: 13

goto Full paper

goto View the references in ADS

Number of rows : 13
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 LDN 1448 DNe 03 22.5 +30 35           ~ 490 0
2 IRAS 03258+3104 Y*O 03 28 55.30 +31 14 27.8           ~ 160 1
3 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 421 3
4 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 641 1
5 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 473 0
6 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 574 0
7 IRAS 04191+1523 Y*O 04 22 00.43944 +15 30 21.2148           ~ 193 0
8 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3772 0
9 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1450 0
10 NAME HH 25MMS Y*O 05 46 07.8 -00 13 41           ~ 56 0
11 BHR 71 MoC 12 01 36.810 -65 08 49.22           ~ 128 0
12 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1113 1
13 LDN 1157 DNe 20 39 06.4 +68 02 13           ~ 516 0

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...590..932T and select 'bookmark this link' or equivalent in the popup menu


2021.09.27-18:36:32

© Université de Strasbourg/CNRS

    • Contact