1997A&A...328..269S

Query : 1997A&A...328..269S

1997A&A...328..269S - Astronomy and Astrophysics, volume 328, 269-273 (1997/12-1)

Photometric variability of the SMC W-R binary HD 5980.

STERKEN C. and BREYSACHER J.

Abstract (from CDS):

We present the results of a photometric monitoring campaign of the W-R binary HD 5980 conducted in November-December 1995, 16 months after the LBV-like outburst of one of the components of the system. On the basis of almost 800 y-band measurements, an improved orbital ephemeris is derived. We also report the discovery of a coherent 6h periodic oscillation visible in the Stroemgren b and y bands with amplitudes ∼0.025mag . This short period may be related to pulsations of the primary or secondary component.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - stars: oscillations - stars: Wolf-Rayet - stars: individual: HD 5980

Simbad objects: 8

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Number of rows : 8
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11145 1
2 HD 5572 PM* 00 55 48.6122749224 -71 38 04.045514856   10.69 10.26     F5/6V 13 0
3 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 410 0
4 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 490 0
5 HD 5980 WR* 00 59 26.5838833944 -72 09 53.927337312   11.13 11.31   11.029 WN4+O7I: 393 1
6 HD 134877 WR* 15 14 57.7186057272 -59 50 30.215432688 12.13 12.19 11.34 11.08   WN8(h) 108 0
7 * zet01 Sco s*b 16 53 59.7271314888 -42 21 43.307334468 4.80 5.31 4.79 4.32 3.86 B1.5Ia+ 372 0
8 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1938 2

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