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iPTF upper limit on recurrent nova M31N 2008-12a

ATel #6532; Y. Cao, T. Prince, S. R. Kulkarni (Caltech), S. Tang, L. Bildsten (UCSB) J. van Roestel (Radboud), M. M. Kasliwal (Carnegie) on behalf of the intermediate Palomar Transient Factory collaboration
on 3 Oct 2014; 18:32 UT
Credential Certification: Yi Cao (ycao@astro.caltech.edu)

Subjects: Optical, Nova

Referred to by ATel #: 6535, 6540, 6543, 6546

The intermediate Palomar Transient Factory monitors M31 on a nightly cadence, weather-permitting. Following ATel#6527, we examined our archive and found no source at the location of M31N 2008-12a on Oct 2 11:14 UT, 10 hours before the reported detection in ATel#6527. We then derived a 5-sigma limiting magnitude of about 19.5 mag in g-band.