2001MNRAS.321..678A

Query : 2001MNRAS.321..678A

2001MNRAS.321..678A - Mon. Not. R. Astron. Soc., 321, 678-684 (2001/March-2)

A 421-d activity cycle in the BeX recurrent transient A0538-66 from MACHO monitoring.

ALCOCK C., ALLSMAN R.A., ALVES D.R., AXELROD T.S., BECKER A.C., BENNETT D.P., CHARLES P.A., COOK K.H., DRAKE A.J., FREEMAN K.C., GEHA M., GRIEST K., LEHNER M.J., MARSHALL S.L., McGOWAN K.E., MINNITI D., NELSON C.A., PETERSON B.A., POPOWSKI P., PRATT M.R., QUINN P.J., STUBBS C.W., SUTHERLAND W., TOMANEY A.B., VANDEHEI T. and WELCH D.L.

Abstract (from CDS):

We present a ∼5-yr optical light curve of the recurrent Be/X-ray transient A0538-66 obtained as a by-product of the MACHO Project. These data reveal both a long-term modulation at P=420.8±0.8d and a short-term modulation at 16.6510±0.0022d which, within errors, confirms the previously found orbital period. Furthermore, the orbital activity is only seen at certain phases of the 421-d cycle, suggesting that the long-term modulation is related to variations in the Be star envelope.

Abstract Copyright: 2001, Royal Astronomical Society

Journal keyword(s): binaries: close - stars: individual: A0538-66 - X-rays: stars

Simbad objects: 2

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Number of rows : 2

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	1A 0535-668	HXB	05 35 40.9970566152	-66 51 53.547559416				15.036	15.138	B2IIIe	302	0
2	X Nor X-1	LXB	16 34 01.610	-47 23 34.80						~	579	0

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