2006IAUC.8702....2S -
IAU Circ., 8702, 2 (2006/April-0)
V2362 Cygni.
SIVIERO A., MUNARI U., VALENTINI M. and VALISA P.
Abstract (from CDS):
A. Siviero, U. Munari, and M. Valentini, INAF, Padova-Asiago; and P. Valisa, Centro Geofisico Prealpino, report that high- dispersion spectra (range 370-730 nm; resolving power 21000) of V2362 Cyg (cf. IAUC 8697, 8698) were obtained on Apr. 13.1 UT with the Asiago 1.82-m telescope; low-dispersion spectra (range 410-700 nm; dispersion 0.17 nm/pixel) were obtained about the same time with the 0.6-m telescope of the Schiapparelli Observatory in Varese. The nova belongs to the 'Fe II class' in showing prominent Fe II emission lines from multiplets 27, 37, 38, 42, 48, 49, and 74 – in addition to [O I] at 557.7, 630.1, and 636.4 nm, and also Na I and Balmer series lines. H_alpha and H_beta display a very broad and structured profile with FWZI = 3750 km/s and FWHM = 1800 km/s. The interstellar Na I D in absorption shows two narrow components (FWHM 20 km/s) at radial velocities -39 and -11 km/s; their equivalent widths correspond, via a Munari and Zwitter (1997, A.Ap. 318, 269) calibration, to a total reddening of the nova of E(B-V) = 0.56.
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