2011A&A...527A.120L


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.24CEST09:34:16

2011A&A...527A.120L - Astronomy and Astrophysics, volume 527A, 120-120 (2011/3-1)

Photospheric hanle diagnostic of weak magnetic dipoles in stars.

LOPEZ ARISTE A., ASENSIO RAMOS A. and GONZALEZ FERNANDEZ C.

Abstract (from CDS):

We propose and explore a new diagnostic technique based upon the linear polarization emitted in Hanle-sensitive lines in disk-integrated stars where a dipolar magnetic field breaks the rotational symmetry of the resonance scattering polarization A star with a simple dipolar field and a 1-0 spectral line were used to compute polarization amplitudes and angles. Predicted amplitudes are low but within reach of present instrumentsA new application of the Hanle effect is proposed and analyzed as a tool that allows measuring of some of the weakest stellar magnetic fields.

Abstract Copyright:

Journal keyword(s): techniques: polarimetric - techniques: spectroscopic - methods: observational - stars: magnetic field

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 19161 * 03 04 13.2496190791 -23 08 37.065920735   10.16 9.09     K0III 5 0
2 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1422 1
3 * zet Ori A ** 05 40 45.527 -01 56 33.26 0.50 1.77 1.88 1.84 2.04 O9.2IbvarNwk 638 0
4 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1031 1

    Equat.    Gal    SGal    Ecl

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2019.07.24-09:34:16

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