Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....91..147m&link_type=abstract
Astronomy and Astrophysics, vol. 91, no. 1-2, Nov. 1980, p. 147-154. Research supported by the National Research Council of Can
Astronomy and Astrophysics
Astrophysics
32
Binary Stars, Hot Stars, Stellar Spectra, Stellar Spectrophotometry, Variable Stars, Wolf-Rayet Stars, Companion Stars, Electrophotometers, Light Curve, Line Spectra, Radial Velocity, Stellar Mass
Scientific paper
Extensive narrow-band photoelectric photometry and high-dispersion optical photographic spectroscopy indicate in the WN8 star HD 96548 the presence of two variable components: (1) random noise with approximately 0.02 mag rms both in the continuum and, uncorrelated, in emission lines, on a time scale of days; (2) a possible periodic modulation (P equals 4.762d) with full amplitude 0.04 mag in the light curve with double minimum and semi-amplitude 8 - 10 km/sec in the radial velocity curve. These are tentatively interpreted in terms of a WR plus compact binary. Supporting evidence for a compact companion comes from two other factors: DH 96548 is located relatively far from the galactic plane and it is surrounded by an expanding, ejected H II gas ring.
Isserstedt J.
Moffat Anthony F. J.
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