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International Astronomical Union Colloquium International Astronomical Union Colloquium

Article contents

Optical Photometry of the Eclipsing LMC Supersoft Source CAL 87

Published online by Cambridge University Press:  12 April 2016

K.A. Southwell ,
P.A. Charles ,
D. O’Donoghue ,
C. Alcock ,
R.A. Allsman ,
D. Alves ,
T.S. Axelrod ,
D.P. Bennett ,
K.H. Cook ,
K.C. Freeman ,
K. Griest ,
J. Guern ,
M.J. Lehner ,
S.L. Marshall ,
B.A. Peterson ,
M.R. Pratt ,
P.J. Quinn ,
A.W. Rodgers ,
C.W. Stubbs ,
W. Sutherland  and
D.L. Welch
K.A. Southwell
Affiliation:
Department of Astrophysics, Keble Road, Oxford, 0X1 3RH, UK
P.A. Charles
Affiliation:
Department of Astrophysics, Keble Road, Oxford, 0X1 3RH, UK
D. O’Donoghue
Affiliation:
Department of Astronomy, University of Cape Town, South Africa
C. Alcock
Affiliation:
The MACHO Collaboration
R.A. Allsman
Affiliation:
The MACHO Collaboration
D. Alves
Affiliation:
The MACHO Collaboration
T.S. Axelrod
Affiliation:
The MACHO Collaboration
D.P. Bennett
Affiliation:
The MACHO Collaboration
K.H. Cook
Affiliation:
The MACHO Collaboration
K.C. Freeman
Affiliation:
The MACHO Collaboration
K. Griest
Affiliation:
The MACHO Collaboration
J. Guern
Affiliation:
The MACHO Collaboration
M.J. Lehner
Affiliation:
The MACHO Collaboration
S.L. Marshall
Affiliation:
The MACHO Collaboration
B.A. Peterson
Affiliation:
The MACHO Collaboration
M.R. Pratt
Affiliation:
The MACHO Collaboration
P.J. Quinn
Affiliation:
The MACHO Collaboration
A.W. Rodgers
Affiliation:
The MACHO Collaboration
C.W. Stubbs
Affiliation:
The MACHO Collaboration
W. Sutherland
Affiliation:
The MACHO Collaboration
D.L. Welch
Affiliation:
The MACHO Collaboration
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Abstract

We present optical photometry of the eclipsing supersoft source, CAL 87. We find the eclipse structure to be stable over ~ 4 y, derive an improved ephemeris of T o = HJD 2450111.5144(3)+0.442674(7)E, and see new structure in the light curve morphology.

Type
Part 15. Poster Papers
Information
International Astronomical Union Colloquium , Volume 163: Accretion Phenomena and Related Outflows , 1997 , pp. 801 - 802
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Alcock, C. et al. 1996, MNRAS, submittedGoogle Scholar
Armitage, P.J. & Livio, M. 1996, ApJ, in pressGoogle Scholar
Callanan, P.J., Machin, G., Naylor, T. & Charles, P.A. 1989, MNRAS, 241, 37PCrossRefGoogle Scholar
Cook, M.C. & Warner, B. 1984, MNRAS, 207, 705 CrossRefGoogle Scholar
Schmidtke, P.C., McGrath, T.K., Cowley, A.P. & Frattare, L.M. 1993, PASP, 105, 863 CrossRefGoogle Scholar
van den Heuvel, E.P.J., Bhattacharya, D., Nomoto, K. & Rappaport, S.A. 1992, A&A, 262, 97 Google Scholar

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