2001A&A...375.1018G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET23:06:24

2001A&A...375.1018G - Astronomy and Astrophysics, volume 375, 1018-1031 (2001/9-1)

An interferometric study of the HH 288 molecular outflow.

GUETH F., SCHILKE P. and McCAUGHREAN M.J.

Abstract (from CDS):

We present an interferometric study of the CO J=1->0 line emission in the HH 288 molecular outflow. The IRAM Plateau de Bure interferometer was used to obtain an 11-field mosaic covering the whole flow (∼2pc) with an angular resolution of about 3.5'' (7000AU at a distance of 2kpc). The data were complemented with short-spacings derived from IRAM 30-m observations. The exciting source of HH 288, IRAS 00342+6347, is a young (dynamical age of the outflow ≃a few 104 years) intermediate-mass (bolometric luminosity ≃500L, envelope mass ≃6 to 30M) embedded protostar. This source is likely to be an intermediate-mass counterpart of a classical Class 0 low-mass protostar. HH 288 is actually a quadrupolar outflow, and the angular resolution provided by the interferometric observations allows us to rule out models involving limb-brightened walls of a wide-angle single flow to explain such a morphology. The presence of two protostars in the central condensation is the most appealing explanation to account for the presence of the two flows. While the small East-West flow has a quite simple morphology and kinematics, the large North-South flow includes several overlapping structures, created by successive ejection events. Large collimated limb-brightened cavities are observed, with high-velocity material located along or near the flow axis. The internal structure of HH 288, including morphological coincidence between the CO and H2 emission, supports prompt entrainment at the head of large bow-shocks as the main formation process of molecular outflows from intermediate-mass protostars.

Abstract Copyright:

Journal keyword(s): stars: formation - interstellar medium: individual objects: HH 288 - interstellar medium: jets and outflows - interstellar medium: molecules - radio lines: ISM

CDS comments: IRAS 20050+2027 misprint for IRAS 20050+2720

Simbad objects: 20

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Number of rows : 20

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 00342+6347 HII 00 37 11.02 +64 04 01.0           ~ 20 0
2 HH 288 HH 00 37 13.6 +64 04 15           ~ 22 0
3 7C 0059+5808 QSO 01 02 45.76238248 +58 24 11.1366009   20.09 19.22 18.57 17.90 ~ 196 1
4 4C 67.05 QSO 02 28 50.05148948 +67 21 03.0293039   19.5   18.1   ~ 237 1
5 LDN 1448 DNe 03 22.5 +30 35           ~ 475 0
6 HH 211 cor 03 43 56.52 +32 00 52.8           ~ 302 0
7 HH 212 HH 05 43 51.41 -01 02 53.1           ~ 297 1
8 GAL 192.16-03.82 HII 05 58 13.4 +16 32 00           ~ 135 1
9 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 663 2
10 NAME Mon OB1 G PoC 06 41 12 +09 55.6           ~ 107 0
11 LDN 723 DNe 19 18 12 +19 13.6           ~ 153 0
12 IRAS 20050+2720 Y*O 20 07 06.549 +27 28 49.10           ~ 100 0
13 NAME IRAS 20050+2720 Cluster Cl* 20 07 06.7 +27 28 53           ~ 83 0
14 IRAS 20126+4104 Y*O 20 14 25.8816186803 +41 13 36.869078243           B2.5-B0.5 403 0
15 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 720 0
16 NAME NGC 7129 FIR 2 IR 21 44 01.5 +66 03 40           ~ 86 0
17 3C 454.3 Bla 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2556 2
18 NAME Cepheus A East SFR 22 54.3 +61 46           ~ 64 0
19 NAME Cep A HW 2 Y*O 22 56 17.9 +62 01 49           B0.5 199 0
20 NAME Cep E HII 23 03 12.779 +61 42 25.75           ~ 157 0

    Equat.    Gal    SGal    Ecl

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