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Related papers: The Evolution of Stars and Gas in starburst Galaxi…

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We analyze the stellar and nebular energy distributions of starbursts using our evolutionary synthesis model PEGASE coupled to the photoionization code CLOUDY. The originality of this study is to relate the evolution and the metallicity of…

Astrophysics · Physics 2009-11-06 E. Moy , B. Rocca-Volmerange , M. Fioc

We build, as far as theory will permit, self consistent model HII regions around central clusters of aging stars. These produce strong emission line diagnostics applicable to either individual HII regions in galaxies, or to the integrated…

Starburst galaxies are powered by massive stars. These stars dominate the heating and enrichment with heavy elements of the interstellar medium, gas out of which new stars form. Thus, high-mass stars, and in consequence starburst galaxies,…

Astrophysics · Physics 2007-05-23 Rosa M. Gonzalez Delgado

We study the stellar population of galaxies with active star formation, determining ages of the stellar components by means of spectral population synthesis of their absorption spectra. The data consist of optical spectra of 185 nearby ($z…

Astrophysics · Physics 2009-10-31 D. Raimann , E. Bica , T. Storchi-Bergmann , J. Melnick , H. Schmitt

We use the self-consistent model technique developed by Mart\'in-Manj\'on et al. (2008) that combines the chemical evolution with stellar population synthesis and photo-ionization codes, to study the star formation scenarios capable of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 M. L. Martín-Manjón , M. Mollá , A. I. Díaz , R. Terlevich

We present a model to self-consistently describe the joint evolution of starburst galaxies and the galactic wind resulting from this evolution. We combine the population synthesis code Starburst99 with a semi-analytical model of galactic…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Benoit Côté , Hugo Martel , Laurent Drissen , Carmelle Robert

We study the gas emission of galaxies with active star formation, consisting mostly of HII galaxies and Starbursts, as well as some Seyfert 2s, and determine chemical and physical parameters. The data consist of 19 high signal-to-noise…

Astrophysics · Physics 2009-07-22 D. Raimann , T. Storchi-Bergmann , E. Bica , J. Melnick , H. Schmitt

The reddening properties and the star formation history of a sample of 19 starburst galaxies are investigated using multiwavelength spectroscopy and infrared broad band photometry. The difference in reddening between the ionized gas and the…

Astrophysics · Physics 2008-11-26 Daniela Calzetti

By using a one-zone chemical and spectrophotometric evolution model of a disk galaxy undergoing a dusty starburst, we investigate, numerically, the optical spectroscopic properties in order to explore galaxy evolution in distant clusters.…

Astrophysics · Physics 2009-11-06 Yasuhiro Shioya , Kenji Bekki , Warrick J. Couch

We present a study of the stellar populations of a sample of 39 local, field early-type galaxies whose HI properties are known from interferometric data. Our aim is to understand whether stellar age and chemical composition depend on the HI…

Astrophysics · Physics 2009-11-13 Paolo Serra , Scott C. Trager , Tom A. Oosterloo , Raffaella Morganti

We constructed diagnostic diagrams using emission line ratios and equivalent widths observed in several samples of HII galaxies. The diagrams are compared to predictions from new photoionization models for evolving starbursts. We find that…

Astrophysics · Physics 2009-11-06 Grazyna Stasinska , Daniel Schaerer , Claus Leitherer

We present evolutionary stellar population synthesis models to predict the spectrum of a single-metallicity stellar population, with a spectral sampling of 0.3 A in five spectral regions between 3700 and 5000 A. The models, which are…

Astrophysics · Physics 2009-10-31 Rosa M. Gonzalez Delgado , Claus leitherer , Timothy Heckman

We have computed a series of realistic and self-consistent models that have been shown to be able to reproduce the emitted spectra of HII galaxies in a star bursting scenario (Martin-Majon et al. 2008). Our models combine different codes of…

Cosmology and Nongalactic Astrophysics · Physics 2009-03-24 M. L. Martin-Manjon , M. Molla , A. I. Diaz , R. Terlevich

Interstellar ultraviolet absorption-lines provide crucial information about the properties of galactic outflows. In this paper, we augment our previous analysis of the systematic properties of starburst-driven galactic outflows by expanding…

Astrophysics of Galaxies · Physics 2016-05-04 Timothy M. Heckman , Sanchayeeta Borthakur

One of the key questions in understanding the formation and evolution of galaxies is how starbursts affect the assembly of stellar populations in galaxies over time. We define a burst indicator ($\eta$), which compares a galaxy's star…

The young stellar population of a star-forming galaxy is the primary engine driving its radiative properties. As a result, the age of a galaxy's youngest generation of stars is critical for a detailed understanding of its star formation…

Astrophysics of Galaxies · Physics 2015-06-17 Emily M. Levesque , Claus Leitherer

This review covers age-dating methods applied to young stellar populations in starburst galaxies with ages of 10^8 yr and less. First, recent advances in stellar modeling, both for the interior and the atmospheres, are discussed and…

Astrophysics · Physics 2009-11-10 Claus Leitherer

A spectrophotometric model able to compute the integrated spectrum of a galaxy, including the contribution both of the stellar populations and of the ionized interstellar gas of the HII regions powered by young hot stars, has been used to…

Astrophysics · Physics 2009-08-17 G. Barbaro , B. M. Poggianti

The interplay between stellar populations and gas in local starburst galaxies is analyzed using images from the Hubble Space Telescope to map the ages of the young stellar components and to isolate the contribution of shocks on spatial…

Astrophysics · Physics 2007-05-23 Daniela Calzetti

We summarize the principles and fundamental ingredients of evolutionary synthesis models, which are stellar evolution, stellar atmospheres, the IMF, star-formation histories, nebular emission, and also attenuation from the ISM and IGM. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Daniel Schaerer
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