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

It may interest you

  • Non-refereed
    Mass and radius determination of young planets and the implications for their gas envelope evolution
    Despite thousands of extrasolar planets discovered to date, the dominant mechanisms forming planets and the timescales of planetary migration and atmospheric evaporation remain to be probed observationally. To shed light on these mechanisms, we performed a combined photometric and spectroscopic analysis of several young transiting systems at
    Mallorquín Díaz, Manuel et al.

    Advertised on:

    7
    2024
    Bibcode
    2024eas..conf.1375M
    Citations
    0
  • Non-refereed
    Participation to the PLATO Ground-Based Observation Programme
    The ESA PLATO (PLAnetary Transits and Oscillations of stars) mission aims at the detection and characterisation (radii, mass, density, age) of terrestrial exoplanets in orbits up to the habitable zone around Sun-like stars. To achieve these goals, an optimised complementary Ground-based Observations Programme (GOP) is set up with the purpose to
    Mowlavi, Nami et al.

    Advertised on:

    7
    2024
    Bibcode
    2024eas..conf.1896M
    Citations
    0
  • Non-refereed
    Unveiling the central kpc of Type I AGN host galaxies in seeing-limited IFS data
    The evolution of galaxies appears linked to the growth of supermassive black holes (SMBH), as evidenced by empirical scale relations between hosts' large-scale properties and the mass of their central black holes. This co-evolutionary scenario suggests that all galaxies experience nuclear activity — active phases during which the black hole
    García Lorenzo, Begoña et al.

    Advertised on:

    7
    2024
    Bibcode
    2024eas..conf..718G
    Citations
    0