Publications

This section contains the publications database that collects IAC articles published in scientific journals. Please, click on the arrow to see full search filter and sort options: author, journal, year, etc..

It also provides access to IAC Preprints Repository here: https://research.iac.es/preprints/

  • Chemical abundances and masses of the haloes around the planetary nebulae NGC 6543 and NGC 6826
    Spatial resolved low resolution spectroscopy of the haloes around the planetary nebulae NGC 6543 and NGC 6826 were conducted. The results imply that the radiation is thermal and not due to dust reflection. From those data chemical abundances and masses were calculated. Chemical abundances decrease in the haloes, while masses increase up to ten
    Manchado, A. et al.

    Advertised on:

    9
    1989
    Citations
    40
  • An example of the cancellation of magnetic fields during the decay of an active region
    A case of cancellation of magnetic fields is observed during the decay of a small active region. Three different sources of information were simultaneously used: high resolution magnetograms, chromospheric Ca II filtergrams and transverse velocity fields. A magnetic structure is apparently dragged to the network by the supergranular velocity field
    de la Rosa, I. G. et al.

    Advertised on:

    9
    1989
    Citations
    8
  • Search for radial velocity variations in rapidly oscillating AP stars using the Fabry-Perot interferometric stellar oscillation spectrometer
    Radial velocity measurements of a group of Ap stars were obtained in May and December 1987 using a Fabry-Perot interferometric stellar oscillation spectrometer that has been improved to enable the instrument to be referenced to the Cd blue line. Observations of the rapidly oscillating Ap stars 33 Lib and HR 1217 were analyzed in order to search for
    Belmonte, J. A. et al.

    Advertised on:

    8
    1989
    Citations
    11
  • Relation between the ionizing continuum and the emission lines in Fairall 9
    The evolution of the emission line ratios of a photoionized cloud described by standard BLR parameters which is exposed to a varying ionizing continuum is studied. The hardness of the ionizing distribution was varied by decoupling the UV increase from that of the X-ray component. After many tests using various ionizing distributions, it became
    Binette, Luc et al.

    Advertised on:

    8
    1989
    Citations
    51
  • Periodic Comet Brorsen-Metcalf (1989o)
    IAUC 4830 available at Central Bureau for Astronomical Telegrams.
    Brooke, T. Y. et al.

    Advertised on:

    8
    1989
    Citations
    0
  • Optical and infrared observations of the H II region S201
    Optical spectroscopy, H-alpha interferometry, and near-IR mapping and photometry of the bipolar H II region S201 are reported. The observations are used to place constraints upon the energetics of the H II region as well as to provide a clearer understanding of the IR structure. The exciting star is coincident with a central bar of obscuring
    Mampaso, A. et al.

    Advertised on:

    8
    1989
    Citations
    7