V2491 Cyg - a possible recurrent nova ?
E. Ragan, M. Mikolajewski, T. Tomov, E. Swierczynski, T. Brozek, C., Galan, P. Rozanski, M. Wiecek, P. Wychudzki
TL;DR
This paper investigates whether Nova V2491 Cyg could be a recurrent nova by analyzing its spectrophotometric properties and comparing them to known recurrent novae.
Contribution
It presents spectrophotometric observations and comparative analysis suggesting V2491 Cyg as a potential recurrent nova candidate.
Findings
Spectrophotometric properties resemble those of known recurrent novae.
V2491 Cyg shares characteristics with V2487 Oph, a confirmed recurrent nova.
Observations support the recurrent nova hypothesis for V2491 Cyg.
Abstract
Nova V2491 Cyg was discovered on April 10.72 UT 2008 (Nakano, 2008). Here we present spectrophotometric premises that V2491 Cyg can be a good candidate for recurrent nova (RNe). Its properties are compared to five well known RNe with red dwarf secondaries (U Sco, V394 Cra, T Pyx, CI Aql, IM Nor) and recently confirmed as recurrent nova V2487 Oph (Pagnotta et al.,2008). Photometric and moderate resolution (R) spectral observations of V2491 Cyg were carried out in the Torun Observatory (Poland) between April 14 and May 20 2008.
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Taxonomy
TopicsAstrophysical Phenomena and Observations · Particle Accelerators and Free-Electron Lasers · Astronomical Observations and Instrumentation