Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...153..163v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 153, no. 1, Dec. 1985, p. 163-167.
Astronomy and Astrophysics
Astrophysics
15
Astronomical Photometry, Stellar Evolution, Supergiant Stars, Variable Stars, B Stars, Data Reduction, Light Curve, Magellanic Clouds, Stellar Color
Scientific paper
VBLUW photometry of the LMC S Dor type star R 71 = HDE 269006 is presented and discussed. It appears that the star similar to other high luminous OB type stars shows optical micro variations. The light amplitude is ≡0m.1 and the typical time scale ≡20d. The star fits well into the PLC relation for variable supergiants, suggesting that some type of pulsation is the cause. Contrary to a few other normal B type supergiants, the light curves of individual cycles are smooth and the V-B and B-L colours vary in anti-phase with each other. The largest colour variations usually occur in the B-U viz. ≡0m.02 (the U band contains the Balmer jump).
Damen Eugene
Feldbrugge T. M. P.
Groot M.
Steemers J. G. W.
van den Boogaart A. K.
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