Open AccessHigh‐speed photometry of the recurrent nova IM Normae
Author(s) -
Woudt Patrick A.,
Warner Brian
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06666.x
Subject(s) - physics , light curve , astrophysics , nova (rocket) , photometry (optics) , brightness , orbital period , accretion disc , astronomy , eclipse , binary star , cataclysmic variable star , accretion (finance) , stars , white dwarf , aeronautics , engineering
The recurrent nova IM Nor is found to have an orbital period of 2.462 h, shown by periodic dips in brightness. This is only the second recurrent nova known to have such a short period. We interpret the light curve as largely produced by a reflection effect from the heated face of the secondary star, probably with the addition of a partial eclipse of the accretion disc.