منابع مشابه
Low mass X-ray binaries as stellar mass indicator of the host galaxy
Using results of Chandra observations of old stellar systems in eleven nearby galaxies of various morphological types and census of LMXBs in the Milky Way we study population of low mass X-ray binaries and their relation to the mass of the host galaxy. We show that azimuthally averaged spatial distribution of the number of LMXBs and, in the majority of cases, of their collective luminosity clos...
متن کاملLow mass X-ray binaries as a stellar mass indicator for the host galaxy
Using results of Chandra observations of old stellar systems in eleven nearby galaxies of various morphological types and the census of LMXBs in the Milky Way, we study the population of low mass X-ray binaries and their relation to the mass of the host galaxy. We show that the azimuthally averaged spatial distribution of the number of LMXBs and, in the majority of cases, of their collective lu...
متن کاملModulation and symmetry changes in stellar dynamos
Stellar dynamos are governed by non-linear partial differential equations (PDEs) which admit solutions with dipole, quadrupole or mixed symmetry (i.e. with different parities). These PDEs possess periodic solutions that describe magnetic cycles, and numerical studies reveal two different types of modulation. For modulations of Type 1 there are parity changes without significant changes of ampli...
متن کاملSolar and stellar dynamos – latest developments
Recent progress in the theory of solar and stellar dynamos is reviewed. Particular emphasis is placed on the mean-field theory which tries to describe the collective behavior of the magnetic field. In order to understand solar and stellar activity, a quantitatively reliable theory is necessary. Much of the new developments center around magnetic helicity conservation which is seen to be importa...
متن کاملLow-mass binaries in young stellar clusters: a deep near-infrared adaptive optics survey
{ Observations of diierent young clusters with ages ranging from 2 to 700 Myr have been performed with the adaptive optics system PUEO at CFHT to search for companions around low-mass stars (M < 1:5M). Over 350 stars were observed with the high angular resolution and sensitivity provided by PUEO, leading to the detection of 60 multiple systems, with separations down to 0: 00 08. The companion s...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1996
ISSN: 0004-637X,1538-4357
DOI: 10.1086/177374