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Related papers: Testing models of triggered star formation: theory…

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We examine the evidence offered for triggered star formation against the backdrop provided by recent numerical simulations of feedback from massive stars at or below giant molecular cloud sizescales. We compile a catalogue of sixty--seven…

Astrophysics of Galaxies · Physics 2015-06-23 J. E. Dale , T. J. Haworth , E. Bressert

We present simulations of initially stable isothermal clouds exposed to ionizing radiation from a discrete external source, and identify the conditions that lead to radiatively driven implosion and star formation. We use the Smoothed…

Solar and Stellar Astrophysics · Physics 2015-05-19 T. G. Bisbas , A. P. Whitworth , R. Wünsch , D. A. Hubber , S. Walch

Star formation can be triggered by compression from wind or supernova driven shock waves that sweep over molecular clouds. Because these shocks will likely contain processed elements, triggered star formation has been proposed as an…

Solar and Stellar Astrophysics · Physics 2015-06-19 Shule Li , Adam Frank , Eric Blackman

We have developed an empirical and effective set of criteria, based on the 2MASS colors, to select candidate classical T Tauri stars (CTTS). This provides a useful tool to study the young stellar population in star-forming regions. Here we…

Astrophysics · Physics 2009-11-10 Hsu-Tai Lee , W. P. Chen , Zhi-Wei Zhang , Jing-Yao Hu

The formation of massive stars is a long standing problem. Although a number of theories of massive star formation exist, ideas appear to converge to a disk-mediated accretion scenario. Here we present radiative hydrodynamic simulations of…

Solar and Stellar Astrophysics · Physics 2019-05-08 N. S. Sartorio , B. Vandenbroucke , D. Falceta-Goncalves , K. Wood , E. Keto

We present a review of the TORUS radiation transfer and hydrodynamics code. TORUS uses a 1-D, 2-D or3-D adaptive mesh refinement scheme to store and manipulate the state variables, and solves the equation of radiative transfer using Monte…

Solar and Stellar Astrophysics · Physics 2019-03-18 Tim Harries , Tom Haworth , David Acreman , Ahmad Ali , Tom Douglas

A "collect and collapse" model of triggered star formation is used to estimate the parameters of ring-like structure consisted of a sequence of low-mass clumps in the W40 region. The model parameters are close to the observed ones if the…

Astrophysics of Galaxies · Physics 2015-06-03 L. E. Pirogov

Radiation transport plays a crucial role in star formation models, as certain questions within this field cannot be accurately addressed without taking it into account. Given the high complexity of the interstellar medium from which stars…

Instrumentation and Methods for Astrophysics · Physics 2024-03-11 Richard Wünsch

Theoretical models of star formation consistently underestimate the rates observed in astronomical surveys. Stars form within giant molecular clouds, which fragment into dense clumps under the combined influences of turbulence, magnetic…

Astrophysics of Galaxies · Physics 2026-02-05 Marin Fontaine , Clotilde Busschaert , Émeric Falize

We investigate observational signatures of triggered star formation in bright rimmed clouds (BRCs) by using molecular line transfer calculations based on radiation-hydrodynamic radiatively-driven-implosion models. We find that for BRCs the…

Astrophysics of Galaxies · Physics 2015-06-15 Thomas J. Haworth , Tim J. Harries , David M. Acreman , David A. Rundle

Accurate determinations of masses and radii in binary stars, along with estimates of the effective temperatures, metallicities, and other properties, have long been used to test models of stellar evolution. As might be expected,…

Solar and Stellar Astrophysics · Physics 2014-03-05 Guillermo Torres

The interaction of ionizing and far-ultraviolet radiation with the interstellar medium is of great importance. It results in the formation of regions in which the gas is ionized, beyond which are photodissociation regions (PDRs) in which…

Astrophysics of Galaxies · Physics 2015-10-21 T. G. Bisbas , T. J. Haworth , M. J. Barlow , S. Viti , T. J. Harries , T. Bell , J. A. Yates

Triggered star formation in bright rims and shells is reviewed. Shells are commonly observed in the Milky Way and other galaxies, but most diffuse shells seen in HI or the infrared do not have obvious triggered star formation. Dense…

Astrophysics of Galaxies · Physics 2015-05-27 Bruce G. Elmegreen

Using the hydrodynamic code ZEUS, we perform 2D simulations to determine the fate of the gas ejected by massive stars within super star clusters. It turns out that the outcome depends mainly on the mass and radius of the cluster. In the…

Astrophysics · Physics 2009-11-13 R. Wunsch , G. Tenorio-Tagle , J. Palous , S. Silich

This paper reviews the theoretical modelling of starburst galaxies with particular emphasis on the importance of the gas-phase physics in determining the form of the continuum SED and the emission line spectrum. Both line and continuum…

Astrophysics · Physics 2008-11-26 Michael A. Dopita

We investigated six H II regions with infrared, bright rimmed bubble or cometary morphology, in search of quantitative evidence for triggered star formation, both collect and collapse and radiatively driven implosion. We identified and…

The gravitational instability of expanding shells triggering the formation of clouds and stars is analyzed. Disks with different scale-heights, ambient and shell velocity dispersions, mid-plane densities, rotation rates and shear rates are…

Astrophysics · Physics 2009-11-07 J. Palous , S. Ehlerova , B. G. Elmegreen

Dust emission is an important tool in studies of star-forming clouds, as a tracer of column density and indirectly via the dust evolution that is connected to the history and physical conditions of the clouds. We examine radiative transfer…

Astrophysics of Galaxies · Physics 2024-01-24 M. Juvela

We present simulations of initially stable isothermal clouds exposed to ionising radiation from a discrete external source, and identify the conditions that lead to radiatively driven implosion and star formation. We use the Smoothed…

Solar and Stellar Astrophysics · Physics 2015-05-28 Thomas G. Bisbas , Richard Wunsch , Anthony P. Whitworth , David A. Hubber , Stefanie Walch

The aim of this paper is to quantitatively testify the "{\it small-scale sequential star formation}" hypothesis in and around bright-rimmed clouds (BRCs). As a continuation of the recent attempt by Ogura et al. (2007, Paper I), we have…

Solar and Stellar Astrophysics · Physics 2015-05-13 Neelam Chauhan , A. K. Pandey , K. Ogura , D. K. Ojha , B. C. Bhatt , S. K. Ghosh , P. S. Rawat
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