Results 51 to 60 of about 1,362,486 (349)

Stellar feedback and triggered star formation [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractYoung, massive stars influence their ambient medium through winds and radiation. The outcome of this feedback depends on the number of massive stars in a star cluster and on the density of the ambient medium. This contribution is based on a comparison of observations to the results of numerical simulations.
Palous, Jan, Wünsch, Richard, Dale, James E., Sidorin, Vojtech, Whitworth, Anthony Peter   +4 more
openaire   +1 more source

Delayed Massive-star Mechanical Feedback at Low Metallicity

The Astrophysical Journal, 2023
The classical model of massive-star mechanical feedback is based on effects at solar metallicity ( Z _⊙ ), yet feedback parameters are very different at low metallicity.
Michelle C. Jecmen, M. S. Oey
doaj   +1 more source

The Structure of the Interstellar Medium of Star Forming Galaxies [PDF]

, 2012
We present numerical methods for including stellar feedback in galaxy-scale simulations. We include heating by SNe (I & II), gas recycling and shock-heating from O-star & AGB winds, HII photoionization, and radiation pressure from stellar photons.
Audit, Ballesteros-Paredes, Ballesteros-Paredes, Bell, Bolatto, Bond, Bournaud, Bournaud, Buat, Ceverino, Chevalier, Cole, Cortese, Dobbs, Dobbs, Eliot Quataert, Erb, Evans, Evans, Federrath, Fukui, Förster Schreiber, Förster Schreiber, Förster Schreiber, Genzel, Glover, Goodman, Governato, Harper-Clark, Hernquist, Heyer, Heyer, Hopkins, Hopkins, Hopkins, Iglesias-Páramo, Imara, Jonsson, Jonsson, Katz, Kennicutt, Kitsionas, Koda, Kroupa, Krumholz, Krumholz, Krumholz, Krumholz, Kuhlen, Leitherer, Li, Li, Mac Low, Mannucci, Matzner, McGaugh, McKee, McKee, Murray, Noll, Nordlund, Norman Murray, Ostriker, Ostriker, Ostriker, Padoan, Padoan, Pei, Philip F. Hopkins, Pineda, Press, Price, Price, Reddy, Robertson, Rosolowsky, Rosolowsky, Sargsyan, Scalo, Solomon, Somerville, Springel, Springel, Stinson, Swinbank, Tacconi, Takeuchi, Tasker, Tasker, Teyssier, Thacker, Torrey, Vazquez-Semadeni, Vázquez-Semadeni, Williams, Wong, Zuckerman   +96 more
core   +2 more sources

Modeling for Stellar Feedback in Galaxy Formation Simulations [PDF]

The Astrophysical Journal, 2017
Abstract Various heuristic approaches to model unresolved supernova (SN) feedback in galaxy formation simulations exist to reproduce the formation of spiral galaxies and the overall inefficient conversion of gas into stars. Some models, however, require resolution-dependent scalings.
Alejandro Núñez, Jeremiah P. Ostriker, Thorsten Naab, Ludwig Oser, Chia-Yu Hu, Ena Choi   +5 more
openaire   +3 more sources

Breathing FIRE: How Stellar Feedback Drives Radial Migration, Rapid Size Fluctuations, and Population Gradients in Low-Mass Galaxies [PDF]

, 2016
We examine the effects of stellar feedback and bursty star formation on low-mass galaxies ($M_{\rm star}=2\times10^6-5\times10^{10}{\rm M_{\odot}}$) using the FIRE (Feedback in Realistic Environments) simulations.
Chan, T. K., El-Badry, Kareem, Faucher-Giguère, Claude-André, Geha, Marla, Hopkins, Philip F., Kereš, Dušan, Wetzel, Andrew R.   +6 more
core   +3 more sources

Effects of Stellar Feedback on Stellar and Gas Kinematics of Star-forming Galaxies at 0.6 < z < 1.0 [PDF]

Astrophysical Journal, 2020
Recent zoom-in cosmological simulations have shown that stellar feedback can flatten the inner density profile of the dark matter halo in low-mass galaxies.
D. Pelliccia, B. Mobasher, B. Darvish, B. Lemaux, L. Lubin, Jessie Hirtenstein, Lu Shen, Po-Feng Wu, K. El-Badry, A. Wetzel, T. Jones   +10 more
semanticscholar   +1 more source

Stellar dynamics and feedback connections to stellar evolution [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractIn dense stellar systems, dynamical interactions between objects inevitably lead to frequent formation of exotic stellar objects and multiple systems, thereby imposing new questions for the stellar evolution theory. The evolutionary path of such systems could be different from that of the unperturbed objects, therefore, we must re-evaluate ...
openaire   +1 more source

MOLECULAR CLOUD EVOLUTION. III. ACCRETION VERSUS STELLAR FEEDBACK [PDF]

The Astrophysical Journal, 2010
We numerically investigate the effect of feedback from the ionizing radiation heating from massive stars on the evolution of giant molecular clouds (GMCs) and their star formation efficiency (SFE). We find that the star-forming regions within the GMCs are invariably formed by gravitational contraction.
Enrique Vázquez-Semadeni, Pedro Colín, Gilberto C. Gómez, Javier Ballesteros-Paredes, Alan W. Watson   +4 more
openaire   +2 more sources

Dust-buried Compact Sources in the Dwarf Galaxy NGC 4449

The Astrophysical Journal, 2023
Multiwavelength images from the Hubble Space Telescope covering the wavelength range 0.27–1.6 μ m show that the central area of the nearby dwarf galaxy NGC 4449 contains several tens of compact sources that are emitting in the hydrogen recombination line
Daniela Calzetti, Sean T. Linden, Timothy McQuaid, Matteo Messa, Zhiyuan Ji, Mark R. Krumholz, Angela Adamo, Bruce Elmegreen, Kathryn Grasha, Kelsey E. Johnson, Elena Sabbi, Linda J. Smith, Varun Bajaj   +12 more
doaj   +1 more source

A Systematic Look at the Effects of Radiative Feedback on Disc Galaxy Formation [PDF]

, 2014
Galaxy formation models and simulations rely on various feedback mechanisms to reproduce the observed baryonic scaling relations and galaxy morphologies. Although dwarf galaxy and giant elliptical properties can be explained using feedback from supernova
Agertz, Oscar, Moore, Ben, Roškar, Rok, Teyssier, Romain, Wetzstein, Markus   +4 more
core   +1 more source