Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

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



ID: 607335.0, MPI für Astronomie / Publikationen_mpia
The unresolved galaxies with Gaia
Authors:Kontizas, M.; Bellas-Velidis, I.; Rocca-Volmerange, B.; Kontizas, E.; Tsalmantza, P.; Livanou, E.; Dapergolas, A.; Karampelas, A.
Publisher:EDP Sciences
Date of Publication (YYYY-MM-DD):2011
Title of Proceedings:GAIA: At the Frontiers of Astrometry
Start Page:337
End Page:342
Volume (in Series):45
Name of Conference/Meeting:GAIA: At the Frontiers of Astrometry
Audience:Not Specified
Abstract / Description:Classification and parametrization of unresolved galaxies to be detected by Gaia is the goal of our contribution to DPAC/CU8. Gaia will observe more than several times 106 unresolved galaxies seen almost as point sources. For the classification and parametrization of these sources we have undertaken the following tasks: a) providing libraries of synthetic galaxy spectra (produced under the PÉGASE.2 code of galaxy evolution) and a semi-empirical library using observed galaxy spectra from SDSS data archive. b) Developping an appropriate algorithm called Unresolved Galaxy Classifier (UGC). The algorithm is being developed implementing the Support Vector Machines (SVM), a supervised training technique. This algorithm utilizes Gaia simulated BP/RP galaxy spectra of our synthetic galaxy library.
Comment of the Author/Creator:Date: 2011, February 1, 2011
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2011EAS....45..337K
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.