Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1779661 | New Astronomy | 2008 | 6 Pages |
Abstract
The spectral evolution of the slow nova V5558 Sgr has been monitored at the Loiano Observatory, Italy, during the pre-maximum stage and the early decline. The nova exhibited a long pre-maximum stage and several secondary outbursts after the initial maximum. The spectra during the pre-maximum stage showed emission lines of H I and Fe II. The spectra after the first maximum showed intense emission lines of H I, Fe II and emerging He I lines. During a secondary brightening absorption components appeared on H I, He II and Fe II lines. The spectroscopic evolution is similar to the evolution of the slow nova V723 Cas. The estimated distance of V5558 Sgr is 1.3 ± 0.3 kpc.
Keywords
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Physics and Astronomy
Astronomy and Astrophysics
Authors
R. Poggiani,