| Issue |
A&A
Volume 378, Number 1, October IV 2001
|
|
|---|---|---|
| Page(s) | 132 - 141 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20011154 | |
| Published online | 15 October 2001 | |
Infrared spectroscopy of the 1999 outburst of U Scorpii*
1
Department of Physics, Keele University, Keele, Staffs, ST5 5BG, UK
2
Landessternwarte, Königstuhl, 69117 Heidelberg, Germany e-mail: J.Krautter@lsw.uni-heidelberg.de
3
European Southern Observatory, Casilla 19001, Santiago 19, Chile e-mail: lvanzi@eso.org
4
Department of Physics & Astronomy, Arizona State University, PO Box 871504, Tempe, AZ 85287-1504, USA e-mail: sumner.starrfield@asu.edu
Corresponding author: A. Evans, ae@astro.keele.ac.uk
Received:
11
December
2000
Accepted:
9
August
2001
We present infrared spectroscopy of the recurrent nova U Sco, obtained
during the 1999 eruption. The 0.94...2.4μm spectrum is dominated
by Hi, Hei and Heii emission lines and the
pseudo photosphere of the hot white dwarf. The ejected material is
overabundant in He and O; we estimate He/H 
and O/H
by number, for
electron temperature 
K. There appears to be excess
emission longward of ~1.4μm, which is likely to be due to
free-free emission by the material ejected in the 1999 eruption; from
this we deduce an ejected mass of 
.
Key words: stars: individual: U Sco / stars: novae, cataclysmic variables / infrared: stars
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.