2010MNRAS.408L..61H

Query : 2010MNRAS.408L..61H

2010MNRAS.408L..61H - Mon. Not. R. Astron. Soc., 408, L61-L65 (2010/October-2)

The magnetic field and the evolution of element spots on the surface of the HgMn eclipsing binary ARAur.

HUBRIG S., SAVANOV I., ILYIN I., GONZALEZ J.F., KORHONEN H., LEHMANN H., SCHOLLER M., GRANZER T., WEBER M., STRASSMEIER K.G., HARTMANN M. and TKACHENKO A.

Abstract (from CDS):

The system AR Aur is a young late B-type double-lined eclipsing binary with a primary star of HgMn peculiarity. We applied the Doppler imaging method to reconstruct the distribution of Fe and Y over the surface of the primary using spectroscopic time series obtained in 2005 and from 2008 October to 2009 February. The results show a remarkable evolution of the element distribution and overabundances. Measurements of the magnetic field with the moment technique using several elements reveal the presence of a longitudinal magnetic field of the order of a few hundred gauss in both stellar components and a quadratic field of the order of 8kG on the surface of the primary star.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): stars: abundances - binaries: eclipsing - binaries: spectroscopic - stars: chemically peculiar - stars: individual: AR Aur - stars: magnetic field

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * alf And a2* 00 08 23.25988 +29 05 25.5520 1.48 1.95 2.06 2.09 2.19 B8IV-VHgMn 479 1
2 * phi Phe SB* 01 54 22.0319152104 -42 29 48.942141036   5.055 5.109     A3V 120 0
3 * 17 Aur SB* 05 18 18.8960529504 +33 46 02.516925540   6.102 6.144     B9V+B9.5V 308 0
4 Ass Aur OB 1 As* 05 22 +33.9           ~ 85 0
5 * chi Lup SB* 15 50 57.5453432166 -33 37 37.728345509 3.77 3.909 3.946     B9III 318 0
6 * 74 Aqr a2* 22 53 28.7049178152 -11 36 59.453153568 5.41 5.709 5.780     B8IV/V 160 0

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