@article{anders_spectral_2003,
	title = {Spectral and photometric evolution of young stellar populations: {The} impact of gaseous emission at various metallicities},
	volume = {401},
	issn = {0004-6361},
	shorttitle = {Spectral and photometric evolution of young stellar populations},
	url = {http://adsabs.harvard.edu/abs/2003A%26A...401.1063A},
	doi = {10.1051/0004-6361:20030151},
	abstract = {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 {\textless}=
Z/Zsun {\textless}= 2.5. This allows to extend them to significantly
younger ages than before. They now cover the age range from 4 Myr all
through 14 Gyr. We point out the very important contributions of gaseous
emission to broad band fluxes and their strong metallicity dependence
during very early evolutionary stages of star clusters, galaxies or
subgalactic fragments with vigorous ongoing star formation.
Emission-line contributions are commonly seen in these actively
star-forming regions. Models without gaseous emission cannot explain
their observed colors at all, or lead to wrong age estimates. We use
up-to-date Lyman continuum (=Lyc) emission rates and decided to use
recent empirical determinations of emission line ratios relative to
Hbeta for subsolar metallicities. We justify this approach
for all situations where no or not enough spectral information is
available to determine all the parameters required by photoionization
models. The effects of gaseous line and continuum emission on broad band
fluxes are shown for different metallicities and as a function of age.
In addition to the many filter systems already included in our earlier
models, we here also include the HST NICMOS and Advanced Camera for
Surveys (=ACS) filter systems.

Data files are provided in the electronic version at CDS via anonymous
ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via
http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/401/1063, and at
http://www.uni-sw.gwdg.de/{\textasciitilde}galev/panders/},
	urldate = {2019-02-20},
	journal = {Astronomy and Astrophysics},
	author = {Anders, P. and Fritze-v. Alvensleben, U.},
	month = apr,
	year = {2003},
	keywords = {galaxies: evolution, galaxies: star clusters, globular clusters: general, open clusters and associations: general},
	pages = {1063--1070},
}

{"_id":"tt2xviJfnwKtrHJDk","bibbaseid":"anders-fritzevalvensleben-spectralandphotometricevolutionofyoungstellarpopulationstheimpactofgaseousemissionatvariousmetallicities-2003","author_short":["Anders, P.","Fritze-v. Alvensleben, U."],"bibdata":{"bibtype":"article","type":"article","title":"Spectral and photometric evolution of young stellar populations: The impact of gaseous emission at various metallicities","volume":"401","issn":"0004-6361","shorttitle":"Spectral and photometric evolution of young stellar populations","url":"http://adsabs.harvard.edu/abs/2003A%26A...401.1063A","doi":"10.1051/0004-6361:20030151","abstract":"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 \\textless= Z/Zsun \\textless= 2.5. This allows to extend them to significantly younger ages than before. They now cover the age range from 4 Myr all through 14 Gyr. We point out the very important contributions of gaseous emission to broad band fluxes and their strong metallicity dependence during very early evolutionary stages of star clusters, galaxies or subgalactic fragments with vigorous ongoing star formation. Emission-line contributions are commonly seen in these actively star-forming regions. Models without gaseous emission cannot explain their observed colors at all, or lead to wrong age estimates. We use up-to-date Lyman continuum (=Lyc) emission rates and decided to use recent empirical determinations of emission line ratios relative to Hbeta for subsolar metallicities. We justify this approach for all situations where no or not enough spectral information is available to determine all the parameters required by photoionization models. The effects of gaseous line and continuum emission on broad band fluxes are shown for different metallicities and as a function of age. In addition to the many filter systems already included in our earlier models, we here also include the HST NICMOS and Advanced Camera for Surveys (=ACS) filter systems. Data files are provided in the electronic version at CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/401/1063, and at http://www.uni-sw.gwdg.de/\\textasciitildegalev/panders/","urldate":"2019-02-20","journal":"Astronomy and Astrophysics","author":[{"propositions":[],"lastnames":["Anders"],"firstnames":["P."],"suffixes":[]},{"propositions":[],"lastnames":["Fritze-v.","Alvensleben"],"firstnames":["U."],"suffixes":[]}],"month":"April","year":"2003","keywords":"galaxies: evolution, galaxies: star clusters, globular clusters: general, open clusters and associations: general","pages":"1063–1070","bibtex":"@article{anders_spectral_2003,\n\ttitle = {Spectral and photometric evolution of young stellar populations: {The} impact of gaseous emission at various metallicities},\n\tvolume = {401},\n\tissn = {0004-6361},\n\tshorttitle = {Spectral and photometric evolution of young stellar populations},\n\turl = {http://adsabs.harvard.edu/abs/2003A%26A...401.1063A},\n\tdoi = {10.1051/0004-6361:20030151},\n\tabstract = {We include gaseous continuum and line emission into our GALEV models for \nthe spectral and photometric evolution of Simple Stellar Populations\n(SSPs) for various metallicities in the range 0.02 {\\textless}=\nZ/Zsun {\\textless}= 2.5. This allows to extend them to significantly\nyounger ages than before. They now cover the age range from 4 Myr all\nthrough 14 Gyr. We point out the very important contributions of gaseous\nemission to broad band fluxes and their strong metallicity dependence\nduring very early evolutionary stages of star clusters, galaxies or\nsubgalactic fragments with vigorous ongoing star formation.\nEmission-line contributions are commonly seen in these actively\nstar-forming regions. Models without gaseous emission cannot explain\ntheir observed colors at all, or lead to wrong age estimates. We use\nup-to-date Lyman continuum (=Lyc) emission rates and decided to use\nrecent empirical determinations of emission line ratios relative to\nHbeta for subsolar metallicities. We justify this approach\nfor all situations where no or not enough spectral information is\navailable to determine all the parameters required by photoionization\nmodels. The effects of gaseous line and continuum emission on broad band\nfluxes are shown for different metallicities and as a function of age.\nIn addition to the many filter systems already included in our earlier\nmodels, we here also include the HST NICMOS and Advanced Camera for\nSurveys (=ACS) filter systems.\n\nData files are provided in the electronic version at CDS via anonymous\nftp to cdsarc.u-strasbg.fr (130.79.128.5) or via\nhttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/401/1063, and at\nhttp://www.uni-sw.gwdg.de/{\\textasciitilde}galev/panders/},\n\turldate = {2019-02-20},\n\tjournal = {Astronomy and Astrophysics},\n\tauthor = {Anders, P. and Fritze-v. Alvensleben, U.},\n\tmonth = apr,\n\tyear = {2003},\n\tkeywords = {galaxies: evolution, galaxies: star clusters, globular clusters: general, open clusters and associations: general},\n\tpages = {1063--1070},\n}\n\n","author_short":["Anders, P.","Fritze-v. Alvensleben, U."],"key":"anders_spectral_2003","id":"anders_spectral_2003","bibbaseid":"anders-fritzevalvensleben-spectralandphotometricevolutionofyoungstellarpopulationstheimpactofgaseousemissionatvariousmetallicities-2003","role":"author","urls":{"Paper":"http://adsabs.harvard.edu/abs/2003A%26A...401.1063A"},"keyword":["galaxies: evolution","galaxies: star clusters","globular clusters: general","open clusters and associations: general"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["galaxies: evolution","galaxies: star clusters","globular clusters: general","open clusters and associations: general"],"search_terms":["spectral","photometric","evolution","young","stellar","populations","impact","gaseous","emission","various","metallicities","anders","fritze-v. alvensleben"],"title":"Spectral and photometric evolution of young stellar populations: The impact of gaseous emission at various metallicities","year":2003}