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We present a library of 1654 high-resolution stellar spectra, with a sampling of 0.3 A and covering the wavelength range from 3000 A ~ to 7000 A The library was computed with the latest improvements in stellar atmospheres, incorporating…

We present an integrated study of star formation and galactic stellar mass assembly from z=0.05-1.5 and galactic metallicity evolution from z=0.05-0.9 using a very large and highly spectroscopically complete sample selected by rest-frame…

Astrophysics · Physics 2011-02-16 L. L. Cowie , A. J. Barger

We present the stellar mass - stellar metallicity relation for 3491 star-forming galaxies at $2 \lesssim z \lesssim 3$ using rest-frame far-ultraviolet (FUV) spectra from the Ly$\alpha$ Tomography IMACS Survey (LATIS). We fit stellar…

Astrophysics of Galaxies · Physics 2023-10-20 Nima Chartab , Andrew B. Newman , Gwen C. Rudie , Guillermo A. Blanc , Daniel D. Kelson

We present a new model for computing consistently the line and continuum emission from galaxies, based on a combination of recent population synthesis and photoionization codes. We use effective parameters to describe the HII regions and…

Astrophysics · Physics 2015-06-24 S. Charlot , M. Longhetti

We have developed a new stellar population synthesis model designed to study early-type galaxies. It provides optical and near-infrared colors, and line indices for 25 absorption lines. It can synthesize single age, single metallicity…

Astrophysics · Physics 2008-11-26 A. Vazdekis , E. Casuso , R. F. Peletier , J. E. Beckman

We analyze the optical continuum of star-forming galaxies in SDSS by fitting stacked spectra with stellar population synthesis models to investigate the relation between stellar mass, stellar metallicity, dust attenuation and star formation…

Astrophysics of Galaxies · Physics 2017-09-27 H. Jabran Zahid , Rolf-Peter Kudritzki , Charlie Conroy , Brett Andrews , I-Ting Ho

Aims. We present a continuation of our study about the relation between stellar mass and gas-phase metallicity in the VIMOS VLT Deep Survey (VVDS). In this work we extend the determination of metallicities up to redshift = 1.24 for a sample…

We examine the redshift evolution of standard strong emission-line diagnostics for Hbeta-selected star-forming galaxies using the local SDSS sample and a new z = 0.2 - 2.3 sample obtained from HST WFC3 grism and Keck DEIMOS and MOSFIRE…

Astrophysics of Galaxies · Physics 2016-01-27 Lennox L. Cowie , Amy J. Barger , Antoinette Songaila

Accounting for nebular emission when modeling galaxy spectral energy distributions (SEDs) is important, as both line and continuum emission can contribute significantly to the total observed flux. In this work, we present a new nebular…

Astrophysics of Galaxies · Physics 2017-05-10 Nell Byler , Julianne J. Dalcanton , Charlie Conroy , Benjamin D. Johnson

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 present a new generation of chemically consistent evolutionary synthesis models for galaxies of various spectral types from E through Sd. The models follow the chemical enrichment of the ISM and take into account the increasing initial…

We have studied a sample of 11 blue, luminous, metal-poor galaxies at redshift 0.744 < z < 0.835 from the DEEP2 redshift survey. They were selected by the presence of the [OIII]4363 auroral line and the [OII]3726,3729 doublet together with…

Astrophysics of Galaxies · Physics 2014-12-15 J. M. Perez-Martinez

[Abridged]. We present SEDs for single-age, single-metallicity stellar populations (SSPs) covering the optical range at resolution 2.3A (FWHM). These SEDs constitute our base models, as they combine scaled-solar isochrones with MILES…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-27 A. Vazdekis , P. Sánchez-Blázquez , J. Falcón-Barroso , A. J. Cenarro , M. A. Beasley , N. Cardiel , J. Gorgas , R. F. Peletier

We provide here the documentation of the new version of the spectral evolution model PEGASE. PEGASE computes synthetic spectra of galaxies in the UV to near-IR range from 0 to 20 Gyr, for a given stellar IMF and evolutionary scenario (star…

Astrophysics · Physics 2007-05-23 Michel Fioc , Brigitte Rocca-Volmerange

We exploit the unprecedented depth of integral field data from the KMOS Ultra-deep Rotational Velocity Survey (KURVS) to analyse the strong (H$\alpha$) and forbidden ([NII], [SII]) emission line ratios in 22 main-sequence galaxies at…

We have explored the emission line trends in the integrated spectra of normal spiral galaxies of the Nearby Field Galaxy Survey, in order to investigate the relationships between dust extinction, metallicity and some macroscopic properties…

Astrophysics · Physics 2009-11-06 Grazyna Stasinska , Laerte Sodre

We present a new library of semi-empirical stellar population models that are based on the empirical MILES and semi-empirical sMILES stellar libraries. The models span a large range of age and metallicity, in addition to an [$\alpha$/Fe]…

Astrophysics of Galaxies · Physics 2023-06-12 Adam T. Knowles , Anne E. Sansom , Alex Vazdekis , Carlos Allende Prieto

We include gaseous continuum and line emission into our GALEV models for the spectral and photometric evolution of Simple Stellar Populations (SSPs) for various metallicities in the range 0.02 <= Z/Zsun <= 2.5. This allows to extend them to…

Astrophysics · Physics 2010-04-06 Peter Anders , Uta Fritze -- v. Alvensleben

With the aim of building a data-set of spectral properties of well studied early-type galaxies showing emission lines, we present intermediate resolution spectra of 50 galaxies in the nearby Universe. The sample, which covers several of the…

Astrophysics · Physics 2009-11-10 R. Rampazzo , F. Annibali , A. Bressan , M. Longhetti , F. Padoan , W. W. Zeilinger
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