Object type   SN Ia
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Reference: CBET004193 ATEL8291
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of PSN J01072038+3223598 discovered by E. Conseil, G. Arlic in NGC 383 and PSN J10081137+5150409 discovered by K. Nishimura in UGC 5460.
Informations on this transient are available from the "Bright Supernova" website (http://www.rochesterastronomy.org/snimages/) and the CBAT "Transient Object Followup Reports" pages. The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).
Name | Discovery UT | Obs. Date UT |z | Type | Phase |Notes PSN J01072038+3223598 | 20151111.76 | 20151116.92 |0.017 | Ia | -5 days | (1) PSN J10081137+5150409 | 20151115.78 | 20151117.17 |0.0036 | II | 2-3 weeks | (2)
(1) The expansion velocity, as deduced from the position of the minimum of the Si II 635 nm line, is about 12700 km/s. The redshift adopted for NGC 383 is from Smith et al. 2000, MNRAS, 313, 469.(2) The expansion velocity, as deduced from the position of the minimum of Halpha, is about 9700 km/s. The spectrum, along with Balmer lines, show strong Ca II H&K, Fe II and the relatively weak He I 587.6 nm feature. We note that the SN was also detected with AFOSC about 1 week before the discovery of Nishimura, in the course of routine imaging observations of UGC 5460. On 2015 Nov 9.175 UT, we estimate for PSN J10081137+5150409 a magnitude r = 17.59 +/- 0.02 (ABmag).
Classifications were done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.