SOAR spectroscopic confirmation of V6566 Sgr (PNV J17561375-2942546) as a classical nova
ATel #13449; E. Aydi, K. V. Sokolovsky, J. Strader, L. Chomiuk, A. Kawash, (MSU)
on 5 Feb 2020; 17:35 UT
Credential Certification: Elias Aydi (eaydi@saao.ac.za)
Subjects: Optical, Binary, Cataclysmic Variable, Nova, Star, Transient
We report on spectroscopic follow up of the optical transient V6566 Sgr (PNV J17561375-2942546) which was discovered by Minoru Yamamoto, Okazaki, Aichi, Japan on 2020-01-30.85UT (CBAT) and was classified as a possible classical nova by Akazawa-san, Funao, Kurashiki, Okayama, Japan (vsnet-alert 23924).
On 2020-02-05.35UT, we obtained two low- and medium- resolution spectra using the Goodman spectrograph (Clemens et al. 2004, SPIE, 5492, 331) on the 4.1 m SOAR telescope. The spectra show broad emission lines of H I, Fe II, Na I, and O I. The spectral lines are characterized by P Cygni profiles typical for classical novae. We identify multiple absorption components in the line profiles with the fastest absorption dips located at a velocity of around -1750 km/s. We measure a FWHM for the Balmer lines of around 1500 km/s. The overall spectrum is that of a Galactic classical nova.
We encourage follow up observations in all bands.
This ATel is based on observations obtained at the Southern Astrophysical Research (SOAR) telescope, which is a joint project of the Ministério da Ciência, Tecnologia, Inovações e Comunicações do Brasil (MCTIC/LNA), the U.S. National Science Foundation's National Optical Astronomy Observatory (NOAO), the University of North Carolina at Chapel Hill (UNC), and Michigan State University (MSU).
