Hernández Santisteban J.; Echevarría J.; Zharikov S.; Neustroev V.; Tovmassian G.; Chavushyan V.; Napiwotzki R.; Costero R.; Michel R.; Sánchez L.; Ruelas-Mayorga A.; Olguín L.; García-Díaz M.; González-Buitrago D.; De Miguel E.; De La Fuente E.; De Anda R.; Suleimanov V.
(2019)
© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse new optical spectroscopic, direct-image and X-ray observations of the recently discovered a high-proper ...