New spectroscopic observations of the SMC classical nova ASASSN-19qv
ATel #12917; Terry C. Bohlsen (ARAS group; Mirranook, Armidale, NSW Australia)
on 10 Jul 2019; 12:10 UT
Distributed as an Instant Email Notice Novae
Credential Certification: S. N. Shore (shore@df.unipi.it)
We report new optical low resolution (R ~ 1750) flux calibrated spectroscopic observations of the recently reported SMC nova ASASSN-19qv (first spectroscopic confirmation, ATel #12907). A spectrum was obtained on 2019 Jul 9.5UT with a C11 reflector and LISA spectrograph (exposure time 1535 sec, minimum continuum S/N = 10 at 7000 A) covering the range 3800 - 7200 A. The continuum is comparatively flat, fluxes are (8+/-0.2)E-13 erg/s/cm^2/A at H-beta and H-alpha, The Balmer lines show strong absorption with maximum velocity -2000 km/s (H-alpha through H-gamma), corrected for SMC +158 km/s). The Fe II spectrum is quite strong throughout, but with lower velocities than the hydrogen lines, e.g., Fe II 4921, 5018, 5169, 6148 (vrad ~ -1200 km/s), Mg I 5176 (-1400 km/s). Many of the metallic ions show displaced, overlapping absorption/emission profiles due to the relative low resolution data and richness of the spectrum. To guide observations, those lines not detected include all He I optical transitions, Si II 6347/70, [O I] 6300,64, C II 4267. The nova is clearly still in a very opaque stage of the expansion but the high velocities indicate that its development may be rapid and, given its brightness, continuing spectroscopic observations are strongly encouraged.
ARAS Nova Database
