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Spectroscopic classification of three supernovae with the Nordic Optical Telescope

ATel #8992; S. Mattila (Turku), N. Elias-Rosa (INAF-Padova), P. Lundqvist (Stockholm), M. Stritzinger (Aarhus U), H. Kuncarayakti (MAS, DAS), J. Harmanen (Turku), A. Pastorello (INAF-Padova), S. Benetti (INAF-Padova), E. Cappellaro (INAF-Padova), N. Blagorodnova (Caltech), S. Davis (FSU), S. Dong (KIAA-PKU), M. Fraser (IoA), C. Gall (Aarhus U), D. Harrison (IoA), S. Hodgkin (IoA), E. Y. Hsiao (FSU), P. Jonker (SRON), T. Kangas (Turku), E. Kankare (QUB), Z. Kostrzewa-Rutkowska (Warsaw/SRON), M. Nielsen (Aarhus U), Paolo Ochner (INAF-Padova), J. L. Prieto (UDP, MAS), T. Reynolds (Turku, NOT), C. Romero-Canizales (PUC, MAS), F. Taddia (OKC), L. Tartaglia (INAF-Padova), G. Terreran (INAF-Padova/QUB), L. Tomasella (INAF-Padova), L. Wyrzykowski (Warsaw Observatory)
on 27 Apr 2016; 10:45 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Hanindyo Kuncarayakti (kuncarayakti@gmail.com)

Subjects: Optical, Supernovae, Transient

The NOT Unbiased Transient Survey (NUTS) collaboration reports the spectroscopic classifications of supernovae Gaia16akk, ASASSN-16ek, and ASASSN-16eq in an anonymous host galaxy, GALEXASC J072024.60+325058.8, and UGC 11898 respectively. The candidates were discovered by the Gaia Photometric Science survey and the All-Sky Automated Survey for Supernovae (ATEL #8944, #8979).

The observations were performed with the 2.56 m Nordic Optical Telescope equipped with ALFOSC (range 350-950 nm; resolution 0.34 nm) on 2016-04-25 UT.

 
Name            |  Host galaxy                   |   Redshift   |  Discovery (UT) |  Discovery mag |  Type    | Phase   | Notes 
Gaia16akk       |  anon                          |   0.115      | 2016-04-06.82   | 18.78          |   Ia     | +15d    | (1) 
ASASSN-16ek     |  GALEXASC J072024.60+325058.8  |   0.0142     | 2016-04-12.29   | 16.5           |   IIb    | -5d     | (2) 
ASASSN-16eq     |  UGC 11898                     |   0.026      | 2016-04-22.62   | 16.3           |   Ia     | -1d     | (3) 
 
(1) Redshift from host galaxy lines 
(2) = AT 2016bmd; redshift from host galaxy lines 
(3) = AT 2016bsa 
 

Classifications were performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools, and are posted on WISeREP (Yaron & Gal-Yam 2012, PASP, 124, 668). We acknowledge ESA Gaia (http://cosmos.esa.int/gaia), and the DPAC Photometric Science Alerts Team (http://gaia.ac.uk/selected-gaia-science-alerts) (Rixon et al, 2014, ATel #6593).