Classification of OGLE-2014-SN-067 as a SN Ic with WiFeS
ATel #6430; M. Childress (1), L. Fogarty (2), M. Owers (3), R. Scalzo (1), F. Yuan (1), B. Zhang (1), A. Ruiter (1), I. Seitenzahl (1), B. Tucker (1, 4), B. Schmidt (1), L. Wyrzykowski (5); (1) Australian National University, (2) University of Sydney, (3) Australian Astronomical Observatory, (4) University of California Berkeley, (5) Warsaw University Observatory/OGLE
on 30 Aug 2014; 06:17 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Michael Childress (mjc@mso.anu.edu.au)
We report spectroscopic classification of OGLE-2014-SN-067 with the Wide Field Spectrograph (WiFeS - Dopita et al., 2007, ApSS, 310, 255) on the ANU 2.3m telescope at Siding Spring Observatory, NSW Australia, using the B3000/R3000 gratings (3500-9800 A, 1 A resolution). The SN was discovered by the OGLE-IV Transient Search (Wyrzykowski et al. ATEL #4495, Kozlowski et al. 2013, http://ogle.astrouw.edu.pl/ogle4/transients/ ) on 2014 Aug 26 at mag 16.5 (ATel #6424), and a 20 minute spectrum of the SN was obtained on 2014 Aug 29 UT. Strong narrow emission lines from the host galaxy indicate a redshift of z=0.0187, with strong OIII and weak NII, indicating low metallicity. The SN spectrum exhibits strong absorption features in Ca and O, with weak Si absorption, consistent with a type Ic SN. Inspection with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) shows best matches to SN 1990aa at +0 days at z=0.019 and SN 1994I at +0 days at z=0.018. The spectrum of the SN (with host emission lines removed) can be see at http://www.mso.anu.edu.au/~mjc/OGLE-2014-SN-067_wifes_spec.png
Name | RA (J2000) | Dec (J2000) | Disc. Date | Disc Mag | Disc. Source | z | Type | Phase | Match SN | Notes
OGLE-2014-SN-019 | 04:57:50.49 | -74:00:39.5 | 20140826 | 16.5 | OGLE | 0.0187 | Ic | +0 | SN 1990aa | (1)
Notes:
(1) Redshift from narrow host emission lines.
