0.72-1.62 MU-M SPECTROSCOPY OF NOVA-AQUILAE-1993

Citation
Dk. Lynch et al., 0.72-1.62 MU-M SPECTROSCOPY OF NOVA-AQUILAE-1993, The Astronomical journal, 110(5), 1995, pp. 2274-2279
Citations number
42
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
110
Issue
5
Year of publication
1995
Pages
2274 - 2279
Database
ISI
SICI code
0004-6256(1995)110:5<2274:0MSON>2.0.ZU;2-6
Abstract
We report near infrared spectroscopy of Nova Aquilae 1993 approximatel y 18 and 108 days after maximum light. The early spectrum is a low exc itation one in which only permitted lines are seen. Many of the N I li nes observed can be formed only by recombination. This fact, coupled w ith their prominence, indicates nitrogen is enriched, supporting the m odels which posit enhanced CNO abundances in fast nova. The strongest line in the later spectrum is He I 10830. Many of the lines in the ear lier spectrum are still present in the later spectrum but are dramatic ally weaker relative to the continuum. The unusual light curve of the nova is discussed, as are the possible CNO abundances. (C) 1995 Americ an Astronomical Society.