Reviews In Modern Astronomy: Variabilities In Stars And Galaxies
by Gerhard Klare /
2011 / English / PDF
16.3 MB Download
The International Scientific Spring Meeting of the Astronomische
Ge sellschaft (AG) held at Bamberg in April 1991 was devoted to
"Vari abilities in Stars and Galaxies". Time-dependent phenomena
are observed in a wide range of as tronomical objects. They are
caused by different physical mechanisms (for example by pulsation,
by accretion, or by dramatic eruptive events in connection with
mass outflow) producing observable intensity vari ations through
all wavelengths. Many of the papers in this volume are concerned
with galactic stars showing such behaviour (for ex ample
cataclysmic variables, symbiotic stars, luminous blue variables
(LBVs) and novae). Intrinsic variations of the, magnetic field
struc ture on observable time scales are, for instance, a
peculiarity of cool, solar-like stars and represent a useful tool
to study differential rotation and cycles of activity. Recent
results on the investigation of gas motions in the inner regions of
the Milky Way system, a study of the bipolar galaxy M 82,
observations of variable extragalactic radio sources, the
variability of emission lines in active galactic nuclei (AGN) as
well as continuum variations of quasars and AGN are discussed by
several authors. The yearbook series Reviews in Modern Astronomy of
the AG to bring the scientific events of the was established in
1988 in order meetings of the society to the attention of the
worldwide astronomical community.
The International Scientific Spring Meeting of the Astronomische
Ge sellschaft (AG) held at Bamberg in April 1991 was devoted to
"Vari abilities in Stars and Galaxies". Time-dependent phenomena
are observed in a wide range of as tronomical objects. They are
caused by different physical mechanisms (for example by pulsation,
by accretion, or by dramatic eruptive events in connection with
mass outflow) producing observable intensity vari ations through
all wavelengths. Many of the papers in this volume are concerned
with galactic stars showing such behaviour (for ex ample
cataclysmic variables, symbiotic stars, luminous blue variables
(LBVs) and novae). Intrinsic variations of the, magnetic field
struc ture on observable time scales are, for instance, a
peculiarity of cool, solar-like stars and represent a useful tool
to study differential rotation and cycles of activity. Recent
results on the investigation of gas motions in the inner regions of
the Milky Way system, a study of the bipolar galaxy M 82,
observations of variable extragalactic radio sources, the
variability of emission lines in active galactic nuclei (AGN) as
well as continuum variations of quasars and AGN are discussed by
several authors. The yearbook series Reviews in Modern Astronomy of
the AG to bring the scientific events of the was established in
1988 in order meetings of the society to the attention of the
worldwide astronomical community.
