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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 PÃGASE.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] | |
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