Spectroscopic Classification of Three ASAS-SN Supernovae

ATel #11530; Subhash Bose, Subo Dong, P. Chen (KIAA-PKU), J. Rupert (MDM Observatory), J. Shields, K. Z. Stanek (OSU), Jose L. Prieto (UDP)
on 12 Apr 2018; 06:30 UT
Credential Certification: Subhash Bose (bose@pku.edu.cn)

Subjects: Optical, Supernovae

We report optical spectroscopic observation of supernova candidates ASASSN-18gs/2018apn, ASASSN-18gu/2018aqa and ASASSN-18gz/2018aqe (ATel #11521) using OSMOS (range 398-686 nm) mounted on the MDM 2.4m telescope at KPNO. All three targets were discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN, Shappee et al. 2014). We used SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) to identify the type, phase, and redshift of the SN spectra.

 
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 Survey Name | IAU Name   | Obsv. Date    | Spec. Type | Phase             |  Redshift     | Notes  
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 ASASSN-18gs | SN 2018apn | 2018-04-10.41 |    Ia      | 3-7 days post max.|  0.039        |  (1)   
 ASASSN-18gu | SN 2018aqa | 2018-04-10.25 |    Ia      | Week after max.   |  0.0288 (NED) |  (2,3)  
 ASASSN-18gz | SN 2018aqe | 2018-04-10.34 |    Ia      | Near max.         |  0.0446 (NED) |  (3)  
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(1) The redshift is estimated from SNID SN template cross-correlation.
(2) The classification is consistent with that reported in ATel #11524.
(3) The SNID estimated redshift is consistent with that of the host galaxy.