Magnetic field and chemical composition of the peculiar star HD 10221

2005 ◽  
Vol 31 (5) ◽  
pp. 327-334 ◽  
Author(s):  
Yu. V. Glagolevskii ◽  
T. A. Ryabchikov ◽  
G. A. Chountonov
Keyword(s):  
Magnetic Field ◽  
Chemical Composition ◽  
Peculiar Star

ROOM TEMPERATURE MAGNETIC ANOMALIES IN BENZENE TREATED Bi–Pb–Sr–Ca–Cu–O POWDER

1991 ◽  
Vol 05 (21) ◽  
pp. 1447-1456 ◽  
Author(s):  
A. R. HARUTUNYAN ◽  
L. S. GRIGORYAN ◽  
A. S. KUZANYAN ◽  
A. A. KUZNETSOV ◽  
A. A. TERENTIEV ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Chemical Composition ◽  
Room Temperature ◽  
Microprobe Analysis ◽  
Magnetic Anomalies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Two Samples ◽  
Field Dependent ◽  
History Of

Two samples of benzene-treated Bi–Pb–Sr–Ca–Cu–O powder exhibited at 300 K magnetic field dependent diamagnetism and magnetization irreversibility. The treatment with benzene resulted also in the appearance of microwave absorption at low magnetic fields, while is sensitive to magnetic history of the sample. From X-ray diffraction data one can see that upon benzene treatment the reflections of 85 K and 110 K phases do not change practically, but a series of new reflections appeared, indicating a lattice modulation with 4.9 nm periodicity. A microprobe analysis revealed substantial inhomogeneity of chemical composition across the samples. The room temperature anomalies were weakened in one sample and vanished in the second upon thermal cycling.

scholarly journals Influence of the magnetic field on bandgap and chemical composition of zinc thin films prepared by sparking discharge process

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Stefan Ručman ◽  
Panich Intra ◽  
E. Kantarak ◽  
W. Sroila ◽  
T. Kumpika ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Chemical Composition ◽  
Discharge Process ◽  
The Magnetic Field

scholarly journals Orbital parameters, chemical composition and magnetic field of the Ap binary HD 98088★

2013 ◽  
Vol 431 (2) ◽  
pp. 1513-1527 ◽  
Author(s):  
C. P. Folsom ◽  
K. Likuski ◽  
G. A. Wade ◽  
O. Kochukhov ◽  
E. Alecian ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Chemical Composition ◽  
Orbital Parameters

scholarly journals Study of Inhomogeneities on the Surface of Magnetic CP Stars

1986 ◽  
Vol 90 ◽  
pp. 125-132
Author(s):  
V.L. Khokhlova
Keyword(s):  
Magnetic Field ◽  
Inverse Problem ◽  
Stokes Parameters ◽  
Abundance Distribution ◽  
Peculiar Star ◽  
Chemically Peculiar ◽  
Field Geometry

AbstractThe formulation and solution of the inverse problem to determine local Stokes parameters on the surface of a star, in particular magnetic chemically peculiar star, and hence to determine surface abundance distribution and magnetic field geometry is reviewed.

Effect of Mn Concentration on Magneto-mechnaical Properties in Directionally Solidified Ferromagnetic Shape Memory Ni-Mn-Ga Alloys

2016 ◽  
Vol 66 (4) ◽  
pp. 391
Author(s):  
R.K Singh ◽  
M. Manivel Raja ◽  
P. Ghosal ◽  
R.P. Mathur
Keyword(s):  
Magnetic Field ◽  
Crystal Structure ◽  
Mechanical Properties ◽  
Phase Transformation ◽  
Chemical Composition ◽  
Room Temperature ◽  
Martensite Phase ◽  
Directionally Solidified ◽  
Ferromagnetic Shape Memory ◽  
Mn Concentration

Heusler type alloys Ni50Mn25+xGa25-x  (x=2,3,4 and 5) based on near stoichiometric Ni2MnGa compositions were directionally solidified using modified Bridgman method. The alloys thus prepared were characterized for their chemical composition, crystal structure, microstructure, phase transformation, magnetic  and magneto-mechanical properties. The directionally solidified Ni50Mn30Ga20 alloy rod exhibited maximum magnetocrystalline value of 95 kJm-3 and lowest detwinning stresses for martensite phase of about 5MPa. The reversible room temperature magnetic field induced strain of 0.2% under external magnetic field of 0.6T and 0.05kN bias load was obtained for the directionally solidified Ni50Mn30Ga20 alloy.

scholarly journals Magnetic field topology of the unique chemically peculiar star CU Virginis

2014 ◽  
Vol 565 ◽  
pp. A83 ◽  
Author(s):  
O. Kochukhov ◽  
T. Lüftinger ◽  
C. Neiner ◽  
E. Alecian ◽  
MiMeS collaboration
Keyword(s):  
Magnetic Field ◽  
Peculiar Star ◽  
Magnetic Field Topology ◽  
Chemically Peculiar

scholarly journals The dynamically young outflow of the Class 0 protostar Cha-MMS1

2020 ◽  
Vol 633 ◽  
pp. A126 ◽  
Author(s):  
L. A. Busch ◽  
A. Belloche ◽  
S. Cabrit ◽  
P. Hennebelle ◽  
B. Commerçon
Keyword(s):  
Magnetic Field ◽  
Chemical Composition ◽  
Large Scale ◽  
Angular Resolution ◽  
Continuum Emission ◽  
High Angular Resolution ◽  
Upper Limit ◽  
Large Scale Magnetic Field ◽  
Full Power ◽  
Magnetohydrodynamic Simulations

Context. On the basis of its low luminosity, its chemical composition, and the absence of a large-scale outflow, the dense core Cha-MMS1 located in the Chamaeleon I molecular cloud, was proposed a decade ago as a candidate for a first hydrostatic core (FHSC). Aims. Our goal is to test this hypothesis by searching for a slow, compact outflow driven by Cha-MMS1 that would match the predictions of magnetohydrodynamic simulations for this short phase of star formation. Methods. We used the Atacama Large Millimetre/submillimetre Array to map Cha-MMS1 at high angular resolution in CO 3–2 and 13CO 3–2 as well as in continuum emission. Results. We report the detection of a bipolar outflow emanating from the central core, along a (projected) direction roughly parallel to the filament in which Cha-MMS1 is embedded and perpendicular to the large-scale magnetic field. The morphology of the outflow indicates that its axis lies close to the plane of the sky. We measure velocities corrected for inclination of more than 90 km s−1, which is clearly incompatible with the expected properties of an FHSC outflow. Several properties of the outflow are determined and compared to previous studies of Class 0 and Class I protostars. The outflow of Cha-MMS1 has a much smaller momentum force than the outflows of other Class 0 protostars. In addition, we find a dynamical age of 200–3000 yr indicating that Cha-MMS1 might be one of the youngest ever observed Class 0 protostars. While the existence of the outflow suggests the presence of a disk, no disk is detected in continuum emission and we derive an upper limit of 55 au to its radius. Conclusions. We conclude that Cha-MMS1 has already gone through the FHSC phase and is a young Class 0 protostar, but it has not yet brought its outflow to full power.

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