Fritze-von Alvensleben, Uta

[["dc.bibliographiccitation.issue","204"],["dc.bibliographiccitation.seriesnr","204"],["dc.contributor.author","Moller, C. S."],["dc.contributor.author","Fritze-Von Alvensleben, U."],["dc.contributor.author","Calzetti, D."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T09:32:17Z"],["dc.date.available","2018-11-07T09:32:17Z"],["dc.date.issued","2001"],["dc.identifier.isi","000175997600051"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31720"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Astronomical Soc Pacific"],["dc.publisher.place","San Francisco"],["dc.relation.conference","24th General Assembly of the International-Astronomical-Union"],["dc.relation.crisseries","Proceedings of the ... Symposium of the International Astronomical Union"],["dc.relation.eventend","2000-08-18"],["dc.relation.eventlocation","Manchester, United Kingdom"],["dc.relation.eventstart","2000-08-15"],["dc.relation.isbn","1-58381-062-5"],["dc.relation.ispartof","The extragalactic infrared background and its cosmological implications"],["dc.relation.ispartofseries","Symposium International Astronomical Union; 204"],["dc.title","Metallicities and dust in high-z galaxies"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","11"],["dc.bibliographiccitation.volume","392"],["dc.contributor.author","Schulz, J."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.contributor.author","Moller, C. S."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T10:03:52Z"],["dc.date.available","2018-11-07T10:03:52Z"],["dc.date.issued","2002"],["dc.description.abstract","A new set of evolutionary synthesis spectra are presented for Simple Stellar Populations (SSPs) covering ranges in metallicity from 0.02 less than or equal to Z/Z(.) less than or equal to 2.5 and ages from 4 x 10(6) yr less than or equal to t less than or equal to 16 Gyr. They are based on the most recent isochrones from the Padova group that extend earlier models by the inclusion of the thermal pulsing AGB phase for stars in the mass range 2 M-. less than or equal to m less than or equal to 7 M-. in accordance with the fuel consumption theorem. We show that with respect to earlier models, inclusion of the TP-AGB phase leads to significant changes in the (V-I) and(V-K) colors of SSPs in the age range from 10(8) to greater than or similar to 10(9) yr. Using model atmosphere spectra from Lejeune et al. (1997, 1998), we calculate the spectral evolution of single burst populations of various metallicities covering the wavelength range from 90 Angstrom through 160 mum. Isochrone spectra are convolved with filter response functions to describe the time evolution of luminosities and colors in Johnson, Thuan & Gunn, Koo, HST, Washington and Stromgren filters. The models and their results are not only intended for use in the interpretation of star clusters but also for combination with any kind of dynamical galaxy formation and/or evolution model that contains a star formation criterion. Moreover, the evolution of these single burst single metallicity stellar populations is readily folded with any kind of star formation - and eventually chemical enrichment - history to describe the evolutionary spectral synthesis of composite stellar populations like galaxies of any type with continuous or discontinuous star formation. For these latter purposes we also present the time evolution of ejection rates for gas and metals for two different Initial Mass Functions (IMFs) as well as cosmological and evolutionary corrections for all the filters as a function of redshift for 0 less than or equal to z less than or equal to 5 and two different cosmologies. Extensive data files are provided in the electronic version, at CDS, and at our above www-address."],["dc.identifier.doi","10.1051/0004-6361:20020657"],["dc.identifier.isi","000177868700006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9730"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38572"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E D P Sciences"],["dc.relation.issn","0004-6361"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Spectral and photometric evolution of simple stellar populations at various metallicities"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","37"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","48"],["dc.bibliographiccitation.volume","413"],["dc.contributor.author","Bicker, J."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.contributor.author","Moller, C. S."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T10:52:04Z"],["dc.date.available","2018-11-07T10:52:04Z"],["dc.date.issued","2004"],["dc.description.abstract","The composite stellar populations of galaxies comprise stars of a wide range of metallicities. Subsolar metallicities become increasingly important, both in the local universe when going from early towards later galaxy types as well as for dwarf galaxies and for all types of galaxies towards higher redshifts. 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 metallicity of successive stellar generations using recently published metallicity dependent stellar evolutionary isochrones, spectra and yields. Our first set of closed-box 1-zone models does not include any spatial resolution or dynamics. For a Salpeter initial mass function ( IMF) the star formation rate (SFR) and its time evolution are shown to successfully parameterise spectral galaxy types E,..., Sd. We show how the stellar metallicity distribution in various galaxy types build up with time to yield after similar to12 Gyr agreement with stellar metallicity distributions observed in our and other local galaxies. The models give integrated galaxy spectra over a wide wavelength range (90.9 Angstrom-160 mum), which for ages of similar to12 Gyr are in good agreement not only with observed broad band colours but also with template spectra for the respective galaxy types. Using filter functions for Johnson-Cousins U, B, V, R-C, I-C, as well as for HST broad band filters in the optical and Bessel & Brett's NIR J, H, K filter system, we calculate the luminosity and colour evolution of model galaxies over a Hubble time. Including a standard cosmological model (H-0 = 65, Omega 0 = 0.1) and the attenuation by intergalactic hydrogen we present evolutionary and cosmological corrections as well as apparent luminosities in various filters over the redshift range from z similar to 5 to the present for our galaxy types and compare to earlier models using single (= solar) metallicity input physics only. We also resent a first comparison of our cc models to HDF data. A more detailed comparison with Hubble Deep Field ( HDF) and other deep field data and an analysis and interpretation of high redshift galaxies in terms of ages, metallicities, star formation histories and, galaxy types will be the subject of a forthcoming paper."],["dc.identifier.doi","10.1051/0004-6361:20031483"],["dc.identifier.fs","21413"],["dc.identifier.isi","000187356300005"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9821"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49035"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E D P Sciences"],["dc.relation.issn","0004-6361"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Chemically consistent evolution of galaxies - II. Spectrophotometric evolution from zero to high redshift"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]