SN2009ip is re-brightening, again
ATel #4539; R. Margutti, A. Soderberg, (Harvard University), J. Martin (University of Virgina), F. J. Hambsch (Remote Observatory Atacama Desert), T. G. Tan (Perth Exoplanet Survey Telescope), I. Curtis (Vale Park, Austrailia) on behalf of a large collaboration
on 4 Nov 2012; 02:09 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Raffaella Margutti (rmargutti@cfa.harvard.edu)
Subjects: Optical, Ultra-Violet, Supernovae
We have been monitoring SN2009ip (Smith et al., 2010, ApJ, 139, 1451; Foley et al., 2011, ApJ, 732, 32) during its major 2012 re-brightening with nearly daily cadence photometry from the UV to the optical band. SN2009ip reached maximum light around Oct 5 and then started to decay. However, our latest Swift-UVOT and ground based photometry clearly shows evidence for a re-brightening of SN2009ip starting from Nov 1. The source is re-brightening with an average ~0.1 mag/day in the UVOT u, b, v, w1 and w2 filters, while it is slower in the UVOT m2 filter. Ground-based I photometry shows a ~0.05 mag/day re-brightening.
We thank the Swift team for scheduling the UVOT-ToO observations.
