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Title: Spitzer and ground-based infrared observations of the 2006 eruption of RS ophiuchi
Authors: Evans, A.
Woodward, C. E.
Helton, L. A.
Gehrz, R. D.
Lynch, D. K.
Rudy, R. J.
Russell, R. W.
Kerr, T.
Bode, M. F.
Darnley, M. J.
Eyres, S. P. S.
Geballe, T. R.
O'Brien, T. J.
Davis, R. J.
Starrfield, S.
Ness, J-U.
Drake, J.
Osborne, J. P.
Page, K. L.
Schwarz, G.
Krautter, J.
First Published: 1-Jul-2007
Publisher: American Astronomical Society, IOP Publishing
Citation: Astrophysical Journal, 2007, 663 (1), pp. L29-L32
Abstract: We present Spitzer Space Telescope and complementary ground-based infrared observations of the recurrent nova RS Ophiuchi, obtained over the period 64-111 days after the 2006 eruption. The Spitzer IRS data show a rich emission-line spectrum superimposed on a free-free continuum. The presence of fine-structure and coronal infrared lines lead us to deduce that there are at least two temperatures (1.5 × 10^5 and 9 × 10^5 K) in the ejecta/wind environment and that the electron density in the "cooler" region is 2.2 × 10^5 cm^-3. The determination of elemental abundances is not straightforward, but on the assumption that the Ne and O fine-structure lines arise in the same volume of the ejecta, the O/Ne ratio is >~ 0.6 by number.
DOI Link: 10.1086/519924
ISSN: 0004-637X
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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