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Spectroscopic observation of AT2016iyw and AT2016jal by NUTS (NOT Un-biased Transient Survey)

ATel #9933; F. Taddia, P. Lundqvist, M. Ergon (OKC), T. Kangas, S. Mattila, H. Kuncarayakti, J. Harmanen, A. Somero, T. Reynolds (Turku), M. Stritzinger (Aarhus U), S. Dong (KIAA-PKU), P. Blay (IAC-NOT)
on 4 Jan 2017; 14:43 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Francesco Taddia (ftadd@astro.su.se)

Subjects: Optical, Cataclysmic Variable, Transient, Variables

The Nordic Optical Telescope (NOT) Unbiased Transient Survey (NUTS; ATel #8992) reports the spectroscopic classification of two transients. The candidates were discovered by the ATLAS survey (Tonry et al., ATel #9685).

The observations were performed with the 2.56 m Nordic Optical Telescope equipped with ALFOSC (range 350-950 nm; resolution 1.6 nm FWHM).

 
Survey Name    | IAU Name   | Discovery (UT)  | Discovery mag | Observation (UT) | Redshift | Type    | Phase   | Notes  
ATLAS16dzn     | AT2016iyw  | 2016-12-20.44   | 16.03         | 2017-01-04.02    | 0        | stellar | -       | (1,2) 
ATLAS16ebo     | AT2016jal  | 2016-12-24.21   | 14.79         | 2017-01-03.84    | 0        | stellar | -       | (1,2) 
  

(1) Redshift from absorption lines.

(2) Probably cataclysmic variable or dwarf nova, given the blue continuum and the hydrogen lines in absorption observed in the spectrum.

Classifications were performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools. Calibrated spectra and additional information can be retrieved in the IAU Transient Name Server.