2000A&A...360..642P

Query : 2000A&A...360..642P

2000A&A...360..642P - Astronomy and Astrophysics, volume 360642-646 (2000/8-2)

Magnetic field variations with pulsational phase in the classical Cepheid star η Aquilae.

PLACHINDA S.I.

Abstract (from CDS):

The presence of the magnetic field on the classical Cepheid η Aquilae is established. The magnetic field shows periodic variations with a reversal of its polarity due to stellar pulsations (-100<Be<+50G). Two closed values of Be lie out of the magnetic curve at phases φ=0.610 and φ=0.629. It was suggested that these recoiled points show that the abrupt change of the magnetic field occurred at the phase of propagation of the shock wave within the stellar atmosphere.

Abstract Copyright: ∼

Journal keyword(s): shock waves - stars: individual: η Aquilae - stars: magnetic fields - stars: oscillations - stars: variables: Cepheids

Simbad objects: 3

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Number of rows : 3
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 Car * 06 23 57.10988 -52 41 44.3810 -0.49 -0.59 -0.74 -0.96 -1.13 A9II 461 1
2 * eta Aql cC* 19 52 28.3689223781 +01 00 20.371980515 5.12 4.61 3.80   3.030 F6Iab+B9.8V 701 0
3 * gam Cyg V* 20 22 13.7018357 +40 15 24.044963 3.44 2.90 2.23 1.74 1.40 F8Ib 607 0

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