2009ApJ...694L..26G


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.25CEST09:21:54

2009ApJ...694L..26G - Astrophys. J., 694, L26-L30 (2009/March-3)

Driving turbulence and triggering star formation by ionizing radiation.

GRITSCHNEDER M., NAAB T., WALCH S., BURKERT A. and HEITSCH F.

Abstract (from CDS):

We present high-resolution simulations on the impact of ionizing radiation of massive O stars on the surrounding turbulent interstellar medium (ISM). The simulations are performed with the newly developed software iVINE which combines ionization with smoothed particle hydrodynamics (SPH) and gravitational forces. We show that radiation from hot stars penetrates the ISM, efficiently heats cold low-density gas and amplifies overdensities seeded by the initial turbulence. The formation of observed pillar-like structures in star-forming regions (e.g. in M16) can be explained by this scenario. At the tip of the pillars gravitational collapse can be induced, eventually leading to the formation of low-mass stars. Detailed analysis of the evolution of the turbulence spectra shows that UV radiation of O stars indeed provides an excellent mechanism to sustain and even drive turbulence in the parental molecular cloud.

Abstract Copyright:

Journal keyword(s): ISM: structure - methods: numerical - stars: formation - turbulence - ultraviolet: ISM

Simbad objects: 6

goto Full paper

goto View the reference in ADS

Number of rows : 6

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 NGC 661 GiG 01 44 14.5986547790 +28 42 21.153100307   13.0       ~ 96 0
2 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 449 0
3 M 16 OpC 18 18 48 -13 48.4   6.58 6.0     ~ 940 2
4 NAME Elephant Trunk Nebula MoC 21 36 +57.4           ~ 47 0
5 IC 1396 OpC 21 39 00 +57 29.4           ~ 446 1
6 [G85] 12 CGb 21 40 29.5 +56 35 33           ~ 60 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2009ApJ...694L..26G and select 'bookmark this link' or equivalent in the popup menu


2020.09.25-09:21:54

© Université de Strasbourg/CNRS

    • Contact