A library of galaxy spectra for Gaia

Tsalmantza, P; Kontizas, M; Rocca-Volmerange, B; Bailer-Jones, CAL; Kontizas, E; Bellas-Velidis, I; Korakitis, R; Livanou, E; Dapergolas, A; Vallenari, A; Fioc, M

dc.contributor.author	Tsalmantza, P	en
dc.contributor.author	Kontizas, M	en
dc.contributor.author	Rocca-Volmerange, B	en
dc.contributor.author	Bailer-Jones, CAL	en
dc.contributor.author	Kontizas, E	en
dc.contributor.author	Bellas-Velidis, I	en
dc.contributor.author	Korakitis, R	en
dc.contributor.author	Livanou, E	en
dc.contributor.author	Dapergolas, A	en
dc.contributor.author	Vallenari, A	en
dc.contributor.author	Fioc, M	en
dc.date.accessioned	2014-03-01T02:51:55Z
dc.date.available	2014-03-01T02:51:55Z
dc.date.issued	2009	en
dc.identifier.issn	0094243X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35745
dc.subject	Classification	en
dc.subject	Galaxies	en
dc.subject	Photometry	en
dc.subject	Spectroscopy	en
dc.title	A library of galaxy spectra for Gaia	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1063/1.3141626	en
heal.identifier.secondary	http://dx.doi.org/10.1063/1.3141626	en
heal.publicationDate	2009	en
heal.abstract	The ESA satellite mission Gaia will acqiure 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 sampUng of Inm 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. © 2009 American Institute of Physics.	en
heal.journalName	AIP Conference Proceedings	en
dc.identifier.doi	10.1063/1.3141626	en
dc.identifier.volume	1111	en
dc.identifier.spage	79	en
dc.identifier.epage	82	en