Knowles, Adam T. and Sansom, Anne E. and Vazdekis, Alexandre and Allende Prieto, Carlos sMILES SSPs - A library of semi-empirical MILES stellar population models with variable [alpha/Fe] abundances. [DataSet]

Description

A new library of optical spectral models for analysis of populations of stars, allowing for different population ages, metallicities and [alpha/Fe] element abundance ratios. The models are built from empirical star spectra modified by theoretical star spectra, which are then combined via an initial stellar mass function and weighted by isochrones to produce integrated light spectra of single age, single metallicity, single [alpha/Fe] abundance pattern populations called SSPs. A full description is published in Knowles et al. 2023, Monthly Notices of the Royal Astronomical Society, Volume 523, pp3450-3470.

Research / Data Type:	Collection - various types
Keywords:	galaxies, stellar content, element abundances, models, spectra
DOI:	10.17030/uclan.data.00000388
Research Institutes:	Jeremiah Horrocks Institute > Galaxies
Depositing User:	Anne E Sansom
Date Deposited:	12 Jul 2023 12:53
Revision:	30
URI:	https://uclandata.uclan.ac.uk/id/eprint/388
Additional details Additional details Creators: Creators Email ORCID Knowles, Adam T. adamtknowles@gmail.com 0000-0003-1795-9894 Sansom, Anne E. AESansom@uclan.ac.uk 0000-0002-2782-7388 Vazdekis, Alexandre vazdekis@iac.es 0000-0002-6259-8293 Allende Prieto, Carlos callende@iac.es 0000-0002-0084-572X Schools: School of Engineering and Computing* > Engineering, Construction, Maths and Physics* Collection period: From To 2021 2023 Data collection method: Spectra of semi-empirical stars modified from stars in our Galaxy were combined using available isochrone models and choices of initial mass functions (IMFs) to make SSP spectra. These sMILES SSPs sample 53 ages, from 0.03 to 14 Gyr; 10 metallicities (heavy elements > H and He), from -1.79 to +0.26 dex (on a log scale relative to the Sun's atmospheric metallicity); and [alpha/Fe] abundance patterns from -0.2 to +0.6 dex. The resulting sMILES SSP spectra are in the wavelength range 354.05 to 740.96 nm, with a spectral sampling of 0.09 nm per bin and a spectral resolution of 0.25 nm. The dataset available to anyone from here is for a Kroupa IMF. Additional choices of IMFs are available for the full model set presented on the MILES website at http://miles.ac.es. Keywords: galaxies, stellar content, element abundances, models, spectra Contact email address: rdmsupport@uclan.ac.uk Last Modified: 24 Jul 2023 13:32

Available Files

Data

sMILES_SSPs_Uni ... alKroupa.tar.gz sMILES_SSPs_Uni ... alKroupa.tar.gz sMILES_SSPs_Uni ... alKroupa.tar.gz Visible to: Anyone Document Type : Data File Description: A gzipped tar file of directories containing fits format files of SSP spectra, for a Universal Kroupa IMF Metadata Revision: 4 Mime-Type: application/x-gzip Language: English License: Creative Commons: Attribution-Noncommercial 4.0 File size: 85MB

sMILES_SSPs.tar.gz | Request a copy sMILES_SSPs.tar.gz | Request a copy sMILES_SSPs.tar.gz | Request a copy Visible to: Registered users only Document Type : Data File Description: Full sMILES SSP dataset, for a variety of stellar initial mass functions Metadata Revision: 2 Mime-Type: application/x-gzip Language: English License: Creative Commons: Attribution-Noncommercial 4.0 File size: 2GB

Read me

ATK_sMILES_SSP_ ... E_UCLanData.pdf ATK_sMILES_SSP_ ... E_UCLanData.pdf ATK_sMILES_SSP_ ... E_UCLanData.pdf Visible to: Anyone Document Type : README file File Description: Document describing the stellar population models (sMILES SSPs). Metadata Revision: 9 Mime-Type: application/pdf Language: English License: Creative Commons: Attribution-No Derivative Works 4.0 File size: 3MB

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