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First Confirmed Supernova with the SkyMapper/Zooniverse Supernova Sighting Project

ATel #10426; B. E. Tucker, A. M\"oller, P. Armstrong (Mount Stromlo Observatory, the Australian National University), J. Mould (Swinburne University of Technology), S. Uddin (Purple Mountain Observatory), D. Muthukrishna, F. H. Panther, A. Ruiter, R. Ridden-Harper, B. P. Schmidt, N. E. Sommer, B. Zhang (Mount Stromlo Observatory, the Australian National University), I. Seitenzahl (University of New South Wales), E. Baeten, A. Craggs, WEB, deb86 (Zooniverse Supernova Sighting)
on 25 May 2017; 17:31 UT
Credential Certification: Brad Tucker (brad@mso.anu.edu.au)

Subjects: Optical, Supernovae

We report the classification of a type Ia supernova, SN 2017dxh, discovered in the SkyMapper Transient (SMT) Survey (Scalzo et al. 2017) which utilizes the 268-Mpix camera on the SkyMapper 1.3-m telescope at Siding Spring Observatory near Coonabarabran, NSW, Australia (Keller et al., 2007, PASA, 24, 1). The object was photometrically discovered by citizen scientists as part of the Zooniverse Supernova Sighting Project. Spectroscopic observations of the object were taken on 2017-05-17 using the Wide Field Spectrograph (WiFeS - Dopita et al., 2007, ApSS, 310, 255) on the ANU 2.3m telescope at Siding Spring Observatory using the B3000/R3000 gratings (3500-9800 A, 1 A resolution). Classification was performed using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and the object is well matched to several normal type Ia supernova about one-week post-max at a redshift of 0.073 which is consistent with the host redshift. JM and SU thanks MIAPP for support during their visit.