Continuing spectroscopic observations of the SMC classical nova ASASSN-19qv
ATel #12938; Terry C. Bohlsen (ARAS group; Mirranook, Armidale, NSW Australia)
on 13 Jul 2019; 15:02 UT
Distributed as an Instant Email Notice Novae
Credential Certification: S. N. Shore (shore@df.unipi.it)
Referred to by ATel #: 12990
We report continuing optical low resolution (R ~ 1750) flux calibrated spectroscopy of the SMC nova ASASSN-19qv (see ATel #12917), A new spectrum was obtained on 2019 Jul 12.2UT with a C11 reflector and LISA spectrograph (exposure time 4328 sec, high winds, minimum continuum S/N = 4 at 7000 A) covering the range 4100 - 7200 A. The integrated (not dereddened) flux (4000-7200A) is 1.2E-10 erg/s/cm^2 compared to 2.4E-10 erg/s/cm^2 on Jul. 9. The spectrum continues to show a spectrum characteristic of the Fe-curtain opaque stage of the ejecta expansion despite it rapid fading. The Na I D emission detected on Jul 9 is no longer present. The Balmer lines continue to show strong absorption but with higher velocity (-2400 km/s (H-alpha), -2240 km/s H-beta, both corrected for SMC +158 km/s); the emission to absorption ratio is >10, higher than on Jul. 9, the red wing continues to extend to +2500 km/ on all Balmer lines. The Fe II spectrum is still dominant, though with the weaker absorption lines, e.g., Fe II 5018, 5169, 6148 (vrad ~ -1800 km/s). No emission/absorption is yet detected of He I, Si II, Mg II, C II, [O I]; [Fe II] may appear be present. Continuing spectroscopic observations are strongly encouraged even as the nova fades; X-ray observations would be especially interesting.
ARAS Nova Database
