2017A&A...602L...2H


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.15CET12:25:21

2017A&A...602L...2H - Astronomy and Astrophysics, volume 602, L2-2 (2017/6-1)

Gravitational collapse of the OMC-1 region.

HACAR A., ALVES J., TAFALLA M. and GOICOECHEA J.R.

Abstract (from CDS):

We have investigated the global dynamical state of the integral shaped filament in the Orion A cloud using new N2H+ (1-0) large-scale, IRAM 30m observations. Our analysis of its internal gas dynamics reveals the presence of accelerated motions towards the Orion Nebula Cluster, showing a characteristic blue-shifted profile centred at the position of the OMC-1 South region. The properties of these observed gas motions (profile, extension, and magnitude) are consistent with the expected accelerations for the gravitational collapse of the OMC-1 region and explain both the physical and kinematic structure of this cloud.

Abstract Copyright: © ESO, 2017

Journal keyword(s): ISM: clouds - ISM: kinematics and dynamics - ISM: structure - stars: formation - submillimeter: ISM - submillimeter: ISM

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1907 1
2 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 991 2
3 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 1945 1
4 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1433 1
5 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 691 0
6 2MASS J05352477-0510296 Y*O 05 35 24.777 -05 10 29.61           ~ 37 1
7 TKK 870 Y*O 05 35 28.19 -05 03 41.2           ~ 32 0
8 NAME OMC-2/3 reg 05 35 33.0 -05 00 32           ~ 46 0
9 OMC 4 MoC 05 36 06 -05 35.7           ~ 46 0
10 NAME Ori A MoC 05 38 -07.1           ~ 2616 0
11 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 431 0
12 NAME ORI MOL CLOUD MoC 05 56 -01.8           ~ 812 1

    Equat.    Gal    SGal    Ecl

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2019.11.15-12:25:21

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