Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign

Using 8 telescopes in the northern and southern hemispheres, plus archival data from two on-line sky surveys, we performed a systematic optical spectroscopic study of 39 putative counterparts of unidentified or poorly studied INTEGRAL sources in order to determine or at least better assess their nat...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Cellone, Sergio Aldo, Romero, Gustavo Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Astronómicas
Galaxies: Seyfert
Stars: novae, cataclysmic variables
Techniques: spectroscopic
X-rays: binaries
X-rays: general
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83470
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83470
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: Seyfert
Stars: novae, cataclysmic variables
Techniques: spectroscopic
X-rays: binaries
X-rays: general
spellingShingle Ciencias Astronómicas
Galaxies: Seyfert
Stars: novae, cataclysmic variables
Techniques: spectroscopic
X-rays: binaries
X-rays: general
Cellone, Sergio Aldo
Romero, Gustavo Esteban
Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
topic_facet Ciencias Astronómicas
Galaxies: Seyfert
Stars: novae, cataclysmic variables
Techniques: spectroscopic
X-rays: binaries
X-rays: general
description Using 8 telescopes in the northern and southern hemispheres, plus archival data from two on-line sky surveys, we performed a systematic optical spectroscopic study of 39 putative counterparts of unidentified or poorly studied INTEGRAL sources in order to determine or at least better assess their nature. This was implemented within the framework of our campaign to reveal the nature of newly-discovered and/or unidentified sources detected by INTEGRAL. Our results show that 29 of these objects are active galactic nuclei (13 of which are of Seyfert 1 type, 15 are Seyfert 2 galaxies and one is possibly a BL Lac object) with redshifts between 0.011 and 0.316, 7 are X-ray binaries (5 with high-mass companions and 2 with low-mass secondaries), one is a magnetic cataclysmic variable, one is a symbiotic star and one is possibly an active star. Thus, the large majority (74%) of the identifications in this sample belongs to the AGN class. When possible, the main physical parameters for these hard X-ray sources were also computed using the multiwavelength information available in the literature. These identifications further underscore the importance of INTEGRAL in studying the hard X-ray spectra of all classes of X-ray emitting objects, and the effectiveness of a strategy of multi-catalogue cross-correlation plus optical spectroscopy to securely pinpoint the actual nature of still unidentified hard X-ray sources.
format Articulo
Articulo
author Cellone, Sergio Aldo
Romero, Gustavo Esteban
author_facet Cellone, Sergio Aldo
Romero, Gustavo Esteban
author_sort Cellone, Sergio Aldo
title Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
title_short Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
title_full Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
title_fullStr Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
title_full_unstemmed Unveiling the nature of INTEGRAL objects through optical spectroscopy : VI. A multi-observatory identification campaign
title_sort unveiling the nature of integral objects through optical spectroscopy : vi. a multi-observatory identification campaign
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/83470
work_keys_str_mv AT cellonesergioaldo unveilingthenatureofintegralobjectsthroughopticalspectroscopyviamultiobservatoryidentificationcampaign
AT romerogustavoesteban unveilingthenatureofintegralobjectsthroughopticalspectroscopyviamultiobservatoryidentificationcampaign
bdutipo_str Repositorios
_version_ 1764820488648916995

Ejemplares similares