Peculiar Red Nova V838 Mon: Accretion and Interaction in a Wide Binary System after Explosion of Its Companion

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dc.creatorGoranskij, Vitaly
dc.creatorZharova, Alla
dc.creatorBarsukova, Elena
dc.creatorFabrika, Sergei
dc.creatorValeev, Azamat
dc.date2008-10-10
dc.date.accessioned2026-07-07T10:09:11Z
dc.date.available2026-07-07T10:09:11Z
dc.descriptionWe report the results of recent multicolor photometry and medium resolution spectroscopy of V838 Mon taken in 2007-2008. In the eclipse-like event in December 2006, the hot B3V type companion disappeared. The event accompanied by strengthening emission [FeII]/FeII lines in the spectra. We explain this event as the formation of temporal short-lived accretion disc around the hot companion. Later, in February 2007 the hot star reappeared in its full brightness, but disappeared again for a long time since September 2007. This is the engulf of B3V companion by expanding remnant of 2002 outburst. We assume that the thick accretion disc has formed around B type companion which is moving now inside the envelope of the cool star. There is some evidence of heating this disc and/or cool star envelope. We estimated the radius of expanding cool remnant in December, 2006 of about 150 A.U. or 30000 solar radii.
dc.description7 pages, 5 figures, contributed paper to Conference "Interacting Binaries: Accretion and Synchronization" held in Crimean Astrophysical Observatory (Ukraine) on June 20-26, 2008
dc.identifierhttps://arxiv.org/abs/0810.1887
dc.identifierhttp://arxiv.org/abs/0810.1887
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171240
dc.subjectAstrophysics
dc.titlePeculiar Red Nova V838 Mon: Accretion and Interaction in a Wide Binary System after Explosion of Its Companion
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