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Download fileSwift observations of the March 2011 outburst of the cataclysmic variable NSV 1436: a probable dwarf nova (Research Note)
journal contribution
posted on 2012-10-24, 09:10 authored by J. P. Osborne, K. L. Page, A. A. Henden, J. -. U. Ness, M. F. Bode, G. J. Schwarz, S. Starrfield, J. J. Drake, E. Kuulkers, A. P. BeardmoreAims. The March 2011 outburst of the poorly-studied cataclysmic variable NSV 1436 offered an opportunity to decide between dwarf nova and recurrent nova classifications.
Methods. We use seven daily observations in the X-ray and UV by the Swift satellite, together with AAVSO V photometry, to characterise the outburst and decline behaviour.
Results. The short optical outburst coincided with a faint and relatively soft X-ray state, whereas in decline to fainter optical magnitudes the X-ray source was harder and brighter. These attributes, and the modest optical outburst amplitude, indicate that this was a dwarf nova outburst and not a recurrent nova. The rapid optical fading suggests an orbital period below 2 h.
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Citation
Astronomy & Astrophysics, 2011, 533Version
- VoR (Version of Record)