Abstract
Aims. 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.
Original language | English (US) |
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Article number | A41 |
Journal | Astronomy and Astrophysics |
Volume | 533 |
DOIs | |
State | Published - 2011 |
Keywords
- Accretion, accretion disks
- Binaries: general
- Novae, cataclysmic variables
- Stars: dwarf novae
- Stars: individual: NSV 1436
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science