2003A&A...397..921V


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.20CEST03:09:54

2003A&A...397..921V - Astronomy and Astrophysics, volume 397, 921-925 (2003/1-3)

The effect of the apsidal motion on the light curve of the close binary HD 93205 (O3V+O8V).

VAN GENDEREN A.M.

Abstract (from CDS):

The 1982-1985 photometry (VBLUW system) of the O3V+O8V close binary HD93205 has been rediscussed because of new insights into its true nature and orbital changes. By comparing this data set with the one obtained by Antokhina et al. (2000ApJ...529..463A]) in 1993, and using the same ephemeris to construct the light curve in the phase diagram, the effect of the apsidal motion became obvious: a phase shift between the two light curves and a small change of the shape. A phase-locked light variation in the L passband (containing the higher Balmer lines) is clearly present in the 1982-1985 data set and is presumably due to absorption if the O8 star is seen through cooler inter-binary gas, e.g. the bow-shock between the two colliding winds.

Abstract Copyright:

Journal keyword(s): stars: variables: general - stars: binaries: close - stars: early-type - stars: individual: HD 93205

VizieR on-line data: <Available at CDS (J/A+A/397/921): table1.dat>

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* V560 Car SB* 10 44 33.7392630703 -59 44 15.434160993 6.89 7.80 7.75 7.56 7.46 O3.5V((f))+O8V 280 0
2 HD 93596 * 10 47 03.7204891897 -57 32 46.833953902 8.21 8.68 8.79     B5III 16 0
3 HD 93712 * 10 47 54.7819963896 -58 41 55.508992812 8.99 9.03 9.01     A0V 15 0
4 HD 330308 * 16 06 01.4956659075 -47 43 40.716510916   11.72 11.06     G0 2 0

    Equat.    Gal    SGal    Ecl

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2020.10.20-03:09:54

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