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Spectroscopic confirmation of ASASSN-18ca as a nova

ATel #11292; Ashish Raj, D. K. Sahu, B. S. Kiran, G. C. Anupama (Indian Institute of Astrophysics, Bengaluru 560034, India)
on 13 Feb 2018; 16:49 UT
Credential Certification: G.C. Anupama (gca@iiap.res.in)

Subjects: Optical, Nova

Referred to by ATel #: 11349

We report optical spectroscopic observations of nova ASASSN-18ca (ATel #11275) on Feb 9.58 UT. The spectrum was obtained using the HFOSC instrument mounted on the 2m Himalayan Chandra Telescope (HCT) of the Indian Astronomical Observatory, Hanle, India, in the 380-850nm wavelength range. Prominent emission features are the hydrogen Balmer lines, Fe II lines (multiplets 27, 42, 74), and OI line at 7773 Angstroms. The FWHM velocity of the H-alpha and H-beta lines were measured to be ~2500 km/s and ~ 2250 km/s, respectively. We confirm ASASSN-18ca is an Fe II type classical nova eruption in M31.