Abstract
New outburst of the object BX Mon occurred in the beginning of 2019. The uniqueness of this event lies in its coincidence with the periastron passage by the hot component. This happened for the first time in the history of observations of this object. Previous epochs the moment of periastron passage corresponded to the lower part of the ascending branch of the light curve. Photometric and spectroscopic observations of BX Mon were carried out in the Fesenkov Astrophysical Institute (Republic of Kazakhstan). BVRc magnitudes, absolute fluxes and the profiles of emission lines were obtained. The maximal values B = 9.m7 and V = 9.m3, obtained in the beginning of 2019, are close to those observed during the previous outburst (2003, February). A high level of brightness was maintained until the middle of April. The absolute fluxes in the emission lines Hβ and Hα, obtained during the current outburst, turned out to be significantly weaker compared to the results, obtained in the previous periastron passages. A possible reason of the anomalous decrease of the emission line fluxes is the destruction of the accretion disk - the source of ionizing radiation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
