2005A&A...437..227O

Query : 2005A&A...437..227O

2005A&A...437..227O - Astronomy and Astrophysics, volume 437, 227-234 (2005/7-1)

Discovery of magnetic fields in hot subdwarfs.

O'TOOLE S.J., JORDAN S., FRIEDRICH S. and HEBER U.

Abstract (from CDS):

We present polarisation measurements of sdB and sdO stars using FORS1 on the VLT. The observations were made as part of a project to determine whether magnetic fields in two super-metal-rich stars can explain their extreme abundance peculiarities. Field strengths of up to ∼1.5kG range have been measured at varying levels of significance in each of our six targets, however no clear evidence was found between apparently normal subdwarfs and the metal-rich objects. The origin of the magnetic fields is unknown. We also discuss the implications of our measurements for magnetic flux conservation in late stages of stellar evolution.

Abstract Copyright: ∼

Journal keyword(s): stars: subdwarfs - stars: magnetic fields

Simbad objects: 9

Full paper

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Number of rows : 9

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	[CW83] 0512-08	HS*	05 14 43.9316872560	-08 48 06.372157464		10.97	11.34			sdO	30	0
2	CPD-64 481	HS*	05 47 59.3028778320	-64 23 03.123185352		10.97	11.17			sdB	40	0
3	CD-31 4800	HS*	07 36 30.1950207312	-32 12 43.685045964	9	10.26	10.48	10.81		sdO8p	70	0
4	BD+75 325	HS*	08 10 49.4903003712	+74 57 57.931973676	8.002	9.23	9.50	9.698	9.884	sdO5	253	0
5	HD 76431	HS*	08 56 11.1729974904	+01 40 37.650650664		9.251	9.217	9.498		sdB	49	0
6	PG 0909+276	HS*	09 12 51.6607835328	+27 20 31.396804260		11.92	12.10	12.62		sdB0.5VIIHe19	39	1
7	BD+25 2534	HS*	12 37 23.5161671712	+25 03 59.867922240	9.117	10.26	10.59	10.642	10.809	sdB1(k)	243	0
8	CD-46 8926	HS*	13 53 08.2139106408	-46 43 42.314548008		11.04	11.30			sdO	45	0
9	GD 358	WD*	16 47 18.3925183824	+32 28 32.862804384	12.511	13.530	13.653	13.752	13.852	DB2	348	0

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