2004AJ....128..709C

Query : 2004AJ....128..709C

2004AJ....128..709C - Astron. J., 128, 709-711 (2004/August-0)

The orbital period of SMC X-3 from optical photometry.

COWLEY A.P. and SCHMIDTKE P.C.

Abstract (from CDS):

We have investigated the long-term optical light curve of SMC X-3 using the MACHO database. The optical counterpart is an O9e star that shows low-amplitude variability with a period of 44.86 days in both visible and red light. This compares favorably with the X-ray outburst recurrence period of 45.1 days recently found by Corbet et al. It is likely that this ∼45 day cycle is the orbital period of the hot star and its 7.8 s pulsar companion.

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Journal keyword(s): Stars: Pulsars: General - Stars: Emission-Line, Be - stars: individual (SMC X-3) - Stars: Variables: Other - X-Rays: Binaries

Simbad objects: 9

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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 - 2024 		#notes
1 LIN 198 HXB 00 52 05.6251611744 -72 26 04.228773036 13.86 14.91 14.927 14.91 14.794 B0-5(II)e 166 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11160 1
3 RX J0058.2-7231 HXB 00 58 12.5869662000 -72 30 48.759613812 13.91 14.98 14.87   14.62 B0IIIe 60 0
4 SK 160 HXB 01 17 05.1457288392 -73 26 36.014808156 12.23 13.00 13.15   13.17 O9.7Ia+ 858 0
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7074 0
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17450 0
7 RX J0535.6-6651 HXB 05 35 40.9970566152 -66 51 53.547559416   13.7 13.8     B0.5IIIe 287 0
8 X LMC X-3 HXB 05 38 56.6323605504 -64 05 03.317937504   17 17.2     B2.5Ve 676 0
9 X LMC X-1 HXB 05 39 38.8284304464 -69 44 35.531553624   14.8 14.5     O8(f)p 642 2

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