The magnetic fields of late-type stars are measured using the method of Saar et al. (1986). The method includes radiative transfer effects and compensation for line blending; the photospheric magnetic field parameters are derived by comparing observed and theoretical line profiles using an LTE code that includes line saturation and full Zeeman pattern. The preliminary mean active region magnetic field strengths (B) and surface area coverages for 20 stars are discussed. It is observed that there is a trend of increasing B towards the cooler dwarfs stars, and the linear correlation between B and the equipartition value of the magnetic field strength suggests that the photospheric gas pressure determines the photospheric magnetic field strengths. A tendency toward larger filling factors at larger stellar angular velocities is also detected.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    New measurements of photospheric magnetic fields in late-type stars and emerging trends


    Beteiligte:
    Saar, S. H. (Autor:in) / Linsky, J. L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1986-01-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    INTERPLANETARY MAGNETIC FIELD CALCULATED FROM PHOTOSPHERIC MEASUREMENTS

    Obridko, V. N. / Belov, A. V. / Shelting, B. D. et al. | British Library Conference Proceedings | 2005


    Observed and simulated photospheric velocities within inclined magnetic fields

    Schunker, H. / Cally, P. / European Space Agency | British Library Conference Proceedings | 2006