Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..13e..41t&link_type=abstract
Exploiting Large Surveys for Galactic Astronomy, 26th meeting of the IAU, Joint Discussion 13, 22-23 August 2006, Prague, Czech
Astronomy and Astrophysics
Astronomy
Scientific paper
Introduction: The ESA cornerstone mission GAIA will acquire spectrophotometric observations of a large number of unresolved galaxies. An integral part of the data analysis task is the preparation of a library of galaxy spectra, suitable for the classification and parameterization of the observed objects. Methods: An extended grid of synthetic galaxy spectra has been created, using the code PEGASE.2, which is based on models of galaxy evolutionary synthesis and the BaSeL stellar spectral library. Results: The library contains about 4000 zero-redshift spectra, in the wavelength range 250 to 1050 nm and at one nm or less resolution, and covers the main morphological (Hubble) types of galaxies, at a regular grid of four key astrophysical parameters for each type and at intermediate random values of the same parameters. In addition, the library is produced for various redshifts. Discussion: This synthetic library has been compared with real spectra obtained from SDSS. We have produced two-color diagrams computed from both the synthetic PEGASE.2 and the real SDSS spectra. The agreement is very good at the full range of morphological types.
Bailer-Jones Coryn
Bellas-Velidis I.
Dapergolas A.
Kontizas Evangelista
Kontizas Mary
No associations
LandOfFree
A library of synthetic galaxy spectra for GAIA. Comparison with SDSS. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A library of synthetic galaxy spectra for GAIA. Comparison with SDSS., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A library of synthetic galaxy spectra for GAIA. Comparison with SDSS. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1624479