We report photometry and analysis of a previously unknown SU UMa-type dwarf nova in Bootes detected in outburst by the Catalina Real-time Transient Survey on 2009 May 30 with the discovery identifier CSS090530:144011+494734. This apparently stellar object had previously been catalogued by the Sloan Digital Sky survey as SDSS J144011.01+494733.4. We measured its mean superhump period over the first 3 days following detection as 0.06500(4) d at which point this changed to 0.06438(3) d. We detected a possible orbital period of 0.06322(8) d implying a mean superhump period excess of 0.020(2). After detection, the dwarf nova maintained steady brightness for 5 days before starting to fade. The outburst amplitude was 5.5 magnitudes above its quiescent level.
@article{arxiv.0911.0272,
title = {CSS090530:144011+494734: a new SU UMa-type dwarf nova in Bootes},
author = {David Boyd and Nick Dunckel and Jerry Foote and Ian Miller},
journal= {arXiv preprint arXiv:0911.0272},
year = {2014}
}
Comments
Accepted for publication in Journal of the British Astronomical Association, 8 pages, 7 figures, title changed and identification provenance clarified