Rapid photometric changes in the temporal spectra of the PNN NGC 246

Bibcode
2003whdw.conf..333G
González Pérez, José Miguel; Solheim, Jan-Erik
Bibliographical reference

"White Dwarfs, proceedings of the conference held at the Astronomical Observatory of Capodimonte, Napoli, Italy. http://www.na.astro.it/meetings/wd2002/wd.html. Edited by D. de Martino, R. Silvotti, J.-E. Solheim, and R. Kalytis. Kluwer Academic Publishers. NATO Science Series II -- Mathematics, Physics and Chemistry, Vol. 105, p. 333."

Advertised on:
0
2003
Number of authors
2
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We present an analysis over 3 different campaigns orientated to follow up the temporal spectra of the PNN NGC 246. Using wavelet analysis, we have found evidences of changes in time scale of hours. Such rapid changes have never been observed before. The temporal spectra of the 2001 dataset present a higher number of modulation frequencies and a complex harmonic structure related to one of them. These differences could be explained by a more complicated unsolved combination of modulation frequencies, but more likely due to rapid changes in the physical source which produce them. For this later case we propose binary interaction as responsible of it.
Type
Non-refereed

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