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We have computed a series of realistic and self-consistent models of the emitted spectra of H{\sc ii} galaxies. Our models combine different codes of chemical evolution, evolutionary population synthesis and photoionization. The emitted…

Astrophysics · Physics 2009-11-13 M. Martín Manjón , M. Mollá , A. I. Díaz , R. Terlevich

Using a suite of simulations (Governato et al. 2010) which successfully produce bulgeless (dwarf) disk galaxies, we provide an analysis of their associated cold interstellar media (ISM) and stellar chemical abundance patterns. A preliminary…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 K. Pilkington , B. K. Gibson , F. Calura , G. S. Stinson , C. B. Brook , A. Brooks

The infrared-radio correlation (IRRC) underpins many commonly used radio luminosity-star formation rate (SFR) calibrations. In preparation for the new generation of radio surveys we revisit the IRRC of low-$z$ galaxies by (a) drawing on the…

We show that the multiphase chemical evolution model reproduces the correlations obtained along the spiral sequence, dwarf galaxies included. However the apparent spatial chemical uniformity observed in some irregular galaxies cannot be…

Astrophysics · Physics 2007-05-23 Mercedes Molla , Jean-Rene Roy

Current constraints on models of galaxy evolution rely on morphometric catalogs extracted from multi-band photometric surveys. However, these catalogs are altered by selection effects that are difficult to model, that correlate in non…

Instrumentation and Methods for Astrophysics · Physics 2017-09-06 Sébastien Carassou , Valérie de Lapparent , Emmanuel Bertin , Damien Le Borgne

We explore the intergalactic medium (IGM) as a potential source of the unresolved soft X-ray background (XRB) and the feasibility to extract the IGM state and evolution from XRB observations. We build two analytical models, the continuum…

Astrophysics · Physics 2009-11-07 Pengjie Zhang , Ue-Li Pen

The chemical evolution of distant galaxies cannot be assessed from observations of individual stars, in contrast to the case of nearby galaxies. On the other hand, the study of the interstellar medium (ISM) offers an alternative way to…

The presence of charged dust grains is known to have a profound impact on the physical evolution of the multiphase interstellar medium (ISM). Despite its importance, this process is still poorly explored in numerical simulations due to its…

Astrophysics of Galaxies · Physics 2021-12-01 Martin Glatzle , Luca Graziani , Benedetta Ciardi

Empirical 'backward' galaxy evolution models for IR-bright galaxies are constrained using multiband IR surveys. A new Monte-Carlo algorithm is developed for this task. It exploits a large library of realistic Spectral Energy Distributions…

Astrophysics · Physics 2009-10-31 Cong Xu , Carol J. Lonsdale , David L. Shupe , JoAnn O'Linger , Frank Masci

How cosmic rays sample the multi-phase interstellar medium (ISM) in starburst galaxies has important implications for many science goals, including evaluating the cosmic ray calorimeter model for these systems, predicting their neutrino…

High Energy Astrophysical Phenomena · Physics 2013-11-22 Erin Boettcher , Ellen G. Zweibel , Tova M. Yoast-Hull , J. S. Gallagher

This is the first of a series of papers that will introduce a user-friendly, detailed, and modular GALactic Chemical Evolution Model, GalCEM, that tracks isotope masses as a function of time in a given galaxy. The list of tracked isotopes…

[abridged]We calculate multi-wavelength spectral energy distributions (SEDs) (spanning optical to millimeter wavelengths) from simulations of major galaxy mergers with black hole feedback which produce submillimeter bright galaxies (SMGs),…

Astrophysics · Physics 2009-11-11 Sukanya Chakrabarti , Yeshe Fenner , Lars Hernquist , T. J. Cox , Philip F. Hopkins

Interstellar dust grains are responsible for modifying the spectral energy distribution (SED) of galaxies, both absorbing starlight at UV and optical wavelengths and converting this energy into thermal emission in the infrared. The detailed…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Fabio Fontanot , Rachel S. Somerville

We model gas phase metallicity radial profiles of galaxies in the local Universe by building on the `bathtub' chemical evolution formalism - where a galaxy's gas content is determined by the interplay between inflow, star formation and…

Astrophysics of Galaxies · Physics 2019-05-15 F. Belfiore , F. Vincenzo , R. Maiolino , F. Matteucci

We present high-resolution hydrodynamical simulations of isolated dwarf galaxies including self-gravity, non-equilibrium cooling and chemistry, interstellar radiation fields (IRSF) and shielding, star formation, and stellar feedback. This…

Astrophysics of Galaxies · Physics 2017-08-23 Chia-Yu Hu , Thorsten Naab , Simon C. O. Glover , Stefanie Walch , Paul C. Clark

We investigate models of self-consistent chemical enrichment of the intergalactic medium (IGM) from z=6 to 1.5, based on hydrodynamic simulations of structure formation that incorporate galactic outflows. Our main result is that outflow…

Astrophysics · Physics 2009-08-21 Benjamin D. Oppenheimer , Romeel Davé

Microarray gene expression data-based tumor classification is an active and challenging issue. In this paper, an integrated tumor classification framework is presented, which aims to exploit information in existing available samples, and…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Xiaohui Yang , Wenming Wu , Yunmei Chen , Xianqi Li , Juan Zhang , Dan Long , Lijun Yang

X-ray radiation, in particular radiation between 0.1 keV and 10 keV, is evident from both point-like sources, such as compact objects and T-Tauri young stellar objects, and extended emission from hot, cooling gas, such as in supernova…

Instrumentation and Methods for Astrophysics · Physics 2023-05-02 Brandt A. L. Gaches , Stefanie Walch , Richard Wünsch , Jonathan Mackey

We present results on the interstellar medium (ISM) properties of 29 galaxies based on a comparison of {\it Spitzer} far-infrared and Westerbork Synthesis Radio Telescope radio continuum imagery. Of these 29 galaxies, 18 are close enough to…

Astrophysics · Physics 2009-11-13 E. J. Murphy , G. Helou , J. D. P. Kenney , L. Armus , R. Braun
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