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Optical spectroscopy of the microquasar GRS 1758258: a possible intermediate mass system?

Author: Martí Josep   Luque-Escamilla Pedro L.   Muñoz-Arjonilla Álvaro J.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|596|issue|A46-A46

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.596, Iss.issue, 2016-11, pp. : A46-A46

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Abstract

Context. GRS 1758258 is one of two prototypical microquasars towards the Galactic center direction discovered almost a quarter of a century ago. The system remains poorly studied in the optical domain due to its counterpart being a very faint and absorbed target in a crowded region of the sky.