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Home Search Quick Search Advanced Fulltext Browse Collections Persons My eDoc Session History Login Name: Password: Documentation Help Support Wiki Direct access to document ID:	Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents   history ID: 448041.0, MPI für Astronomie / Publikationen_mpia A library of galaxy spectra for Gaia Authors: Tsalmantza, P.; Kontizas, M.; Rocca-Volmerange, B.; Bailer-Jones, C. A. L.; Kontizas, E.; Bellas-Velidis, I.; Korakitis, R.; Livanou, E.; Dapergolas, A.; Vallenari, A.; Fioc, M. Language: English Publisher: AIP, Springer Date of Publication (YYYY-MM-DD): 2009 Title of Proceedings: Probing Stellar Populations Out to the Distant Universe Start Page: 79 End Page: 82 Title of Series: AIP Conference Proceedings Volume (in Series): 1111 Place of Conference/Meeting: Cefalu, Sicily, Italy Review Status: not specified Audience: Experts Only Abstract / Description: The ESA satellite mission Gaia will acquire spectrophotometric observations of several million unresolved galaxies during its five years of operation. In order to implement a classification scheme for these observations we need to build a new library of galaxy spectra which covers the necessary parameter space. Using the evolutionary code PÉGASE.2 we have produced a library of 28885 synthetic galaxy spectra at zero redshift covering four general spectral types of galaxies over the wavelength range from 250 to 1050 nm, at a sampling of 1 nm or less. The library was also reproduced for four random values of redshift in the range of 0-0.2 and it is computed on a random grid of four key astrophysical parameters (3 for SFR and 1 for timescale of the infall of gas). The synthetic library was compared with various photometric and spectroscopic observations (e.g. from SDSS) and found in good agreement with them. Free Keywords: red shift; galaxies; gamma-ray spectroscopy Comment of the Author/Creator: Date: 2009, May 1, 2009 External Publication Status: published Document Type: Conference-Paper Communicated by: N. N. Affiliations: MPI für Astronomie Identifiers: ISBN:978-0-7354-0648-3 [ID No:1] URL:http://adsabs.harvard.edu/abs/2009AIPC.1111...79T [ID No:2] The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.