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We predict the evolution of giant clumps undergoing star-driven outflows in high-z gravitationally unstable disk galaxies. We find that the mass loss is expected to occur through a steady wind over many tens of free-fall times (t_ff ~ 10…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Avishai Dekel , Mark R. Krumholz

Supernova-driven outflows from early galaxies may have had a large impact on the kinetic and chemical structure of the intergalactic medium (IGM). We use three-dimensional Monte Carlo cosmological realizations of a simple linear peaks model…

Astrophysics · Physics 2009-11-07 Evan Scannapieco , Andrea Ferrara , Piero Madau

We study the dispersal of a gaseous disc surrounding a central high-mass stellar core once this circumstellar disc becomes fully ionized. If the stellar and surrounding EUV and X-ray radiations are so strong as to rapidly heat up and ionize…

Astrophysics · Physics 2007-05-23 Yue Shen , Yu-Qing Lou

We study the effect of a single, instantaneous starburst in a gas-rich dwarf galaxy on the dynamical and chemical evolution of its interstellar medium. We consider the energetic input and the chemical yields originating from SNeII, SNeIa…

Astrophysics · Physics 2007-05-23 Simone Recchi , Francesca Matteucci , Annibale D'Ercole

We investigate the chemo-dynamical effects of multiple supernova explosions in the central region of primordial galaxies using three-dimensional hydrodynamical simulations of the inhomogenous interstellar medium down to parsec-scales. We…

Astrophysics · Physics 2009-11-07 K. Wada , A. Venkatesan

It is well known that gas in galaxy discs is highly turbulent, but there is much debate on which mechanism can energetically maintain this turbulence. Among the possible candidates, supernova (SN) explosions are likely the primary drivers…

Astrophysics of Galaxies · Physics 2020-09-16 Cecilia Bacchini , Filippo Fraternali , Giuliano Iorio , Gabriele Pezzulli , Antonino Marasco , Carlo Nipoti

Dwarf galaxies provide a special environment due to their low mass, small size and generally low metal content. These attributes make them perfect laboratories for the interaction of massive stars with the interstellar medium on small and…

Astrophysics · Physics 2007-05-23 Dominik J. Bomans

A variety of supernova events, including Type IIn supernovae and ultraluminous supernovae, appear to have lost up to solar masses of their envelopes in 10's to 100's of years leading up to the explosion. In order to explain the close timing…

High Energy Astrophysical Phenomena · Physics 2015-06-04 Roger A. Chevalier

Gas blown away from galactic disks by supernova (SN) feedback plays a key role in galaxy evolution. We investigate outflows utilizing the solar neighborhood model of our high-resolution, local galactic disk simulation suite, TIGRESS. In our…

Astrophysics of Galaxies · Physics 2018-02-21 Chang-Goo Kim , Eve C. Ostriker

Galactic outflows are ubiquitously observed in star-forming disk galaxies and are critical for galaxy formation. Supernovae (SNe) play the key role in driving the outflows, but there is no consensus as to how much energy, mass and metal…

Astrophysics of Galaxies · Physics 2017-06-14 Miao Li , Greg L. Bryan , Jeremiah P. Ostriker

Hot, X-ray emitting gaseous halos around massive elliptical galaxies are a result of both stellar mass loss and inflow toward the overdensity from which giant ellipticals and their associated galaxy groups formed. The metal abundance in…

Astrophysics · Physics 2009-10-31 Fabrizio Brighenti , William G. Mathews

When stars form in small groups (N = 100 - 500 members), their circumstellar disks are exposed to little EUV radiation but a great deal of FUV radiation from massive stars in the group. This paper calculates mass loss rates for…

Astrophysics · Physics 2009-11-10 Fred C. Adams , David Hollenbach , Gregory Laughlin , Uma Gorti

It is firmly established that the stellar mass distribution is smooth, covering the range 0.1-100 Msun. It is to be expected that the masses of the ensuing compact remnants correlate with the masses of their progenitor stars, and thus it is…

Astrophysics of Galaxies · Physics 2015-05-30 K. Belczynski , G. Wiktorowicz , C. Fryer , D. Holz , V. Kalogera

Following the recent suggestion that it is dwarf galaxies in clusters -- as opposed to large ellipticals -- that provide the intracluster gas, we estimate the metallicity of the intracluster medium (ICM) in such a case. We derive analytical…

Astrophysics · Physics 2009-10-28 Biman B. Nath , Masashi Chiba

We analyse a set of galaxy interactions performed by using a self-consistent chemo-hydrodynamical model which includes star formation, Supernova feedback and chemical evolution. In agreement with previous works, we find that tidally-induced…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Josefa Perez , Leo Michel-Dansac , Patricia Tissera

We have developed a new scheme to treat a multiphase interstellar medium in smoothed particle hydrodynamics simulations of galaxy formation. This scheme can represent a co-spatial mixture of cold and hot ISM components, and is formulated…

Debris disks are classically considered to be gas-less systems, but recent (sub)millimeter observations have detected tens of those with rich gas content. The origin of the gas component remains unclear; namely, it can be protoplanetary…

Solar and Stellar Astrophysics · Physics 2021-07-21 Riouhei Nakatani , Hiroshi Kobayashi , Rolf Kuiper , Hideko Nomura , Yuri Aikawa

Ultra-diffuse galaxies, characterized by comparable effective radii to the Milky Way but possessing 100-1,000 times fewer stars, offer a unique opportunity to garner novel insights into the mechanisms governing galaxy formation.…

Astrophysics of Galaxies · Physics 2024-04-02 Yu Rong , Huijie Hu , Min He , Wei Du , Qi Guo , Hui-Yuan Wang , Hong-Xin Zhang , Houjun Mo

The synthesis of $r$-process elements is known to involve extremely energetic explosions. At the same time, recent observations find significant $r$-process enrichment even in extremely small ultra-faint dwarf (UFD) galaxies. This raises…

High Energy Astrophysical Phenomena · Physics 2018-07-09 Paz Beniamini , Irina Dvorkin , Joe Silk

We present a search for and characterization of ionized outflows in 15 star-forming systems at $z\sim3-9$ with no evidence of Active Galactic Nuclei (AGN), observed with JWST/NIRSpec IFU as part of the GA-NIFS program. The targets often…