2014/12/14 by Jeremy Shears, David Boyd, Shears, Jeremy +18 · 1 citation
Engineering · Physics and Astronomy · #Accretion disc #Amplitude #Astronomical Observations and Instrumentation #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Cataclysmic variable star #Dwarf nova #FOS: Physical sciences #Gamma-ray bursts and supernovae #Intermediate polar #Light curve #Photometry (optics) #Physics #Polar #Solar and Stellar Astrophysics (astro-ph.SR) #Stars #White dwarf #astro-ph.SR
paper · pdf · doi:10.48550/arxiv.1412.4364
14 pages, 5 Figures. Accepted for publication in the Journal of the British Astronomical Association
arxiv created 2014/12/14 · openalex publication_date 2014/12/14 · arxiv updated 2014/12/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present the 13-year light curve of HW Boo between 2001 May and 2014 May. We identified 12 outbursts, which typically lasted 2 to 5 days, with an amplitude of 2.7 to 3.6 magnitudes. Time resolved photometry during two outbursts revealed small hump-like structures which increased in size as the outburst progressed, reaching a peak-to-peak amplitude of ~0.8 mag. They occurred on timescales of 15 min to an hour, but did not exhibit a stable period. Similar irregular hump-like variations of 0.1 to 0.8 magnitudes, at intervals of 7 to 30 minutes, were also detected during quiescence. We discuss whether HW Boo might be a dwarf nova of the SU UMa family or an Intermediate Polar, but require further observations to support classification.