Mostrar el registro sencillo del ítem

Detection of Galaxies with Gaia

hal.structure.identifierDepartamento de Astronomia, Universidade de São Paulo
dc.contributor.authorDE SOUZA, Ronaldo E.
hal.structure.identifierM2A 2014
dc.contributor.authorKRONE-MARTINS, A.
dc.contributor.authorANJOS, Sandra Dos
hal.structure.identifierM2A 2014
dc.contributor.authorDUCOURANT, C.
dc.contributor.authorTEIXEIRA, Ramachrisna
dc.date.created2014-04-17
dc.date.issued2014
dc.identifier.issn0004-6361
dc.description.abstractEnBesides its major objective tuned to the detection of the stellar galactic population the Gaia mission experiment will also observe a large number of galaxies. In this work we intend to evaluate the number and the characteristics of the galaxies that will effectively pass the onboard selection algorithm of Gaia. The detection of objects in Gaia will be performed in a section of the focal plane known as the Sky Mapper. Taking into account the Video Processing Algorithm criterion of detection and considering the known light profiles of discs and bulges galaxies we assess the number and the type of extra-galactic objects that will be observed by Gaia. We show that the stellar disk population of galaxies will be very difficult to be observed. On the contrary the spheroidal component of elliptical galaxies and bulges having higher central surface brightness and steeper brightness profile will be more easy to be detected. We estimate that most of the 20 000 elliptical population of nearby galaxies inside the local region up to 170 Mpc are in condition to be observed by Gaia. A similar number of bulges could also be observed although the low luminosity bulges should escape detection. About two thirds of the more distant objects up to 600 Mpc could also be detected increasing the total sample to half a million objects including ellipticals and bulges. The angular size of the detected objects will never exceed 4.72 arcsec which is the size of the largest transmitted windows. An heterogeneous population of elliptical galaxies and bulges will be observable by Gaia. This nearby Universe sample of galaxies should constitute a very rich and interesting sample to study their structural properties and their distribution.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enDetection of Galaxies with Gaia
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201423514
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1404.4521
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.A124
bordeaux.volume568
bordeaux.peerReviewedoui
hal.identifierhal-00981325
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00981325v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2014&rft.volume=568&rft.spage=id.A124&rft.epage=id.A124&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=DE%20SOUZA,%20Ronaldo%20E.&KRONE-MARTINS,%20A.&ANJOS,%20Sandra%20Dos&DUCOURANT,%20C.&TEIXEIRA,%20Ramachrisna&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem