000002487 001__ 2487
000002487 005__ 20160701171706.0
000002487 0247_ $$2DOI$$a10.1063/1.1518218
000002487 037__ $$aASTROimport-644
000002487 100__ $$aDuerbeck, H. W.
000002487 245__ $$aSpectroscopic and photometric observations of the recurrent nova IM Normae
000002487 260__ $$c2002
000002487 520__ $$aThe outburst of the recurrent nova IM Nor was followed visually and spectroscopically. In the beginning of the outburst, the nova belonged to Williams' Fe II class, but one month later, the spectrum changed to the He/N class. Thus IM Nor is a member of the hybrid class of novae, and has many spectroscopic similarities with CI Aql and T Pyx, the two other slow recurrent novae observed until now. In early February, the radial velocity of the Fe II emission lines was +220 +/- 35 km/s, the main absorption had -682 +/- 4 km/s, and a faint absorption component -902 +/- 1 km/s. The strengths of the interstellar Ca II, Na I, and K I lines as well as those of the diffuse interstellar bands indicate an interstellar extinction EB-V >= 0.8 and a distance d >= 2.5 kpc. The (uncertain) conclusion is that the absolute magnitude of IM Nor is comparable to that of classical novae of the same speed class. 
000002487 700__ $$a Sterken, C.
000002487 700__ $$a Baptista, R.
000002487 700__ $$a Diaz, M. P.
000002487 700__ $$a Dutra, C. M.
000002487 700__ $$a Freyhammer, L.
000002487 700__ $$a Hensberge, H.
000002487 700__ $$a Jones, A. F.
000002487 773__ $$c299-302$$pClassical Nova Explosions$$v637$$y2002
000002487 85642 $$ahttp://esoads.eso.org/abs/2002AIPC..637..299D
000002487 905__ $$apublished in
000002487 980__ $$aNONREF