2015A&A...577A.107N

Query : 2015A&A...577A.107N

2015A&A...577A.107N - Astronomy and Astrophysics, volume 577A, 107-107 (2015/5-1)

Photometric identification of the periods of the first candidate extragalactic magnetic massive stars.

NAZE Y., WALBORN N.R., MORRELL N., WADE G.A. and SZYMANSKI M.K.

Abstract (from CDS):

Galactic stars belonging to the Of?p category are all strongly magnetic objects exhibiting rotationally modulated spectral and photometric changes on timescales of weeks to years. Five candidate Of?p stars in the Magellanic Clouds have been discovered, notably in the context of ongoing surveys of their massive star populations. Here we describe an investigation of their photometric behaviour, revealing significant variability in all studied objects on timescales of one week to more than four years, including clearly periodic variations for three of them. Their spectral characteristics along with these photometric changes provide further support for the hypothesis that these are strongly magnetized O stars, analogous to the Of?p stars in the Galaxy.

Abstract Copyright: ∼

Journal keyword(s): stars: magnetic field - stars: early-type - stars: individual: AV220 - stars: individual: 2dFS 936 - stars: individual: BI 57 - stars: individual: OGLE SMC-SC5 95303

Simbad objects: 16

Full paper

View the references in ADS

Number of rows : 16

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	HD 108	SB*	00 06 03.3890541936	+63 40 46.771220928	6.79	7.58	7.40			O4-8f?p	321	0
2	NAME SMC 159-2	*	00 49 58.72	-73 19 28.4						O8f?p	5	0
3	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2			~	10601	1
4	OGLE SMC-SC6 237339	*	00 53 29.9470860936	-72 41 44.562639876	12.74	13.88	14.02		14.29	O6.5f?p	9	0
5	AzV 220	Em*	00 59 09.9690896976	-72 05 48.278525460	13.13	14.24	14.51		14.73	O7If	35	0
6	NAME Magellanic Clouds	GrG	03 00	-71.0						~	6632	1
7	NGC 1624	OpC	04 40 36.0	+50 27 42			11.8			~	72	1
8	NGC 1624 2	*	04 40 37.2758720568	+50 27 41.040508572	11.9	12.47	11.57			O7f?cp	50	0
9	Brey 3a	WR*	04 53 30.0791072664	-69 17 49.385662368	13.000	14.398	14.267	14.79	12.791	WC9	37	0
10	BI 57	*	05 01 08.5837288920	-68 11 45.184218108	12.77	13.77	13.97			B1:II:	7	0
11	IRSF J05134985-6923216	*	05 13 49.8679780752	-69 23 21.745655304						O8f?p	5	0
12	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	16639	1
13	* tet01 Ori C	SB*	05 35 16.4662967280	-05 23 22.921811880	4.20	5.15	5.13	4.91	4.73	O7Vp	1374	1
14	CD-28 5104	s*b	07 55 52.8512069760	-28 37 46.791254424	9.39	10.13	9.94	10.12		O6Ifp	83	0
15	HD 148937	SB*	16 33 52.3869185520	-48 06 40.476418740	6.49	7.12	6.71	7.61		O6f?p	378	4
16	HD 191612	SB*	20 09 28.6105997664	+35 44 01.286453904	7.40	8.07	7.80			O8fpe	234	0

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