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Unusual Phase Reversal of Superhumps in ER Ursae Majoris | | T. Kato
; D. Nogami
; S. Masuda
; | | Date: |
24 Nov 2002 | | Subject: | astro-ph | | Affiliation: | Kyoto U), S. Masuda (NAOJ Okayama | | Abstract: | We studied the evolution of superhumps in the peculiar SU UMa-type dwarf nova, ER UMa. Contrary to the canonical picture of the SU UMa-type superhump phenomena, the superhumps of ER UMa show an unexpected phase reversal during the very early stage (~5 d after the superoutburst maximum). We interpret that a sudden switch to so-called late superhumps occurs during the very early stage of a superoutburst. What had been believed to be (ordinary) superhumps during the superoutburst plateau of ER UMa were actually late superhumps. The implication of this discovery is briefly discussed. | | Source: | arXiv, astro-ph/0211520 | | Services: | Forum | Review | PDF | Favorites | |
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