Título
Unveiling the nature of INTEGRAL objects through optical spectroscopy*: X. A new multi-year, multi-observatory campaign
Autor
Vahram Chavushyan
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Within the framework of our program (running since 2004) of identification of hard X-ray INTEGRAL sources through optical spectroscopy, we present the results concerning the nature of 33 high-energy objects. The data were acquired with the use of six telescopes of different sizes and from one on-line archive. The results indicate that the majority of these objects (23 out of 33) are active galactic nuclei (AGNs), whereas 10 are sources in the local Universe with eight of which in the Galaxy and two in the Small Magellanic Cloud (SMC). Among the identified AGNs, 13 are of Type 1 (i.e., with broad emission lines), eight are of Type 2 (with narrow emissions only), and two are X-ray bright, optically normal galaxies with no apparent nuclear activity in the optical. Six of these AGNs lie at high redshift (z > 0.5). Concerning local objects, we found that five of them are Galactic cataclysmic variables, three are high-mass X-ray binaries (two of which lying in the SMC), one is a low-mass X-ray binary, and one is classified as a flare star that is likely of RS CVn type. The main optical properties and inferred physical characteristics of these sources are presented and discussed.
Editor
Astronomy
&
Astrophysics
Fecha de publicación
20 de junio de 2013
Tipo de publicación
Artículo
Versión de la publicación
Versión aceptada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Relación
&
Astrophysics, Vol. 556(A120):1-21
Audiencia
Estudiantes
Investigadores
Público en general
Sugerencia de citación
Masetti, N., et al., (2013), Unveiling the nature of INTEGRAL objects through optical spectroscopy*: X. A new multi-year, multi-observatory campaign, Astronomy
Repositorio Orígen
Repositorio Institucional del INAOE
Descargas
119