2007ApJ...654..361Q


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET23:09:12

2007ApJ...654..361Q - Astrophys. J., 654, 361-372 (2007/January-1)

High-resolution imaging of molecular outflows in massive young stars.

QIU K., ZHANG Q., BEUTHER H. and YANG J.

Abstract (from CDS):

We present high angular resolution observations toward two massive star-forming regions, IRAS 18264-1152 and IRAS 23151+5912, with the Plateau de Bure Interferometer (PdBI) in the SiO(J=2-1) and H13CO+(J=1-0) lines and at 1.3 and 3.4 mm continuum, and with the Very Large Array (VLA) in the NH3(J,K)=(1,1), (2, 2) lines. The NH3(1, 1) and (2, 2) emission is detected toward IRAS 18264-1152 only. For IRAS 18264-1152, the SiO observations reveal at least two quasi-perpendicular outflows with high collimation factors, and the most dominant feature is a redshifted jetlike outflow with very high velocities up to about Δv=60 km/s with respect to the systemic velocity. The very high velocity component (Δv=22-60 km/s) of this outflow is spatially offset from its high-velocity (Δv=3-21 km/s) component. The SiO line profiles and position-velocity characteristics of these two components suggest that this outflow could be driven by an underlying precessing jet. For IRAS 23151+5912, the bipolar but mainly blueshifted SiO outflow coincides with the inner parts of the single-dish CO outflow. In particular, the quasi-parabolic shape of the blueshifted outflow coincides with the near-infrared nebulosity and is consistent with entrainment of the gas by an underlying wide-angle wind. The analysis of the molecular outflow data of the two luminous sources further supports high-mass stars forming via a disk-mediated accretion process similar to that in low-mass stars.

Abstract Copyright:

Journal keyword(s): ISM: individual (IRAS 18264-1152) - ISM: individual (IRAS 23151+5912) - ISM: Jets and Outflows - Stars: Formation

Simbad objects: 29

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Number of rows : 29

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           ~ 469 0
2 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 184 2
3 IRAS 05358+3543 mul 05 39 10.4 +35 45 19           ~ 136 1
4 NAME SH 2-233 IR Cl* 05 39 10.4 +35 45 19           ~ 93 0
5 GAL 192.16-03.82 HII 05 58 13.4 +16 32 00           ~ 135 1
6 NAME Mon OB1 G PoC 06 41 12 +09 55.6           ~ 107 0
7 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5365 1
8 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1062 1
9 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1564 2
10 QSO B1741-038 QSO 17 43 58.85613396 -03 50 04.6166450     18.5 17.98   ~ 481 1
11 GAL 005.88-00.41 HII 18 00 30.388 -24 04 00.20           ~ 302 0
12 IRAS 18264-1152 cor 18 29 14.6846 -11 50 23.966           ~ 73 1
13 QSO B1830-211 QSO 18 33 39.92 -21 03 39.9     18.70 21   ~ 556 6
14 [DLW84] G35.2N HII 18 58 13.036 +01 40 36.00           ~ 93 0
15 IRAS 19217+1651 cor 19 23 58.77 +16 57 44.8           ~ 32 0
16 MSX6C G059.7831+00.0648 Y*O 19 43 11.21664 +23 44 03.9696           ~ 130 0
17 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 143 0
18 [KCW94] 069.540-00.975 HII 20 10 09.0 +31 31 35           ~ 167 1
19 IRAS 20081+3122 Y*O 20 10 09.036 +31 31 34.14           ~ 170 0
20 Onsala 1 Mas 20 10 09.2036 +31 31 36.090           ~ 179 0
21 IRAS 20126+4104 Y*O 20 14 25.8816186803 +41 13 36.869078243           B2.5-B0.5 399 0
22 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 710 0
23 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 361 1
24 LDN 1157 DNe 20 39 06.4 +68 02 13           ~ 493 0
25 IRAS 21519+5613 HII 21 53 38.8 +56 27 53           ~ 37 0
26 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2026 1
27 IRAS 22506+5944 Y*O 22 52 38.09760 +60 01 01.1928           ~ 55 0
28 IRAS 23151+5912 HII 23 17 21.0 +59 28 49           ~ 93 0
29 2MASS J23172102+5928480 NIR 23 17 21.020 +59 28 48.01           ~ 4 1

    Equat.    Gal    SGal    Ecl

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2020.11.30-23:09:12

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