1994A&A...285..531Z


Query : 1994A&A...285..531Z

1994A&A...285..531Z - Astronomy and Astrophysics, volume 285531-534 (1994/5-2)

Rediscussion of photometric data and an accretion disk model for the 96-day binary UU Cancri.

ZOLA S., HALL D.S. and HENRY G.W.

Abstract (from CDS):

Available photometric data of UU Cnc were reanalyzed in order to check for the presence of an accretion disk in the system. Light curve modeling made with a code that simulates a light curve of a binary containing an accretion disk was performed.
Result. show that such a model describes the observed B and V light curves very well. The system was found to consist of a more massive star completely hidden by an optically thick accretion disk and of a 0.77M☉ K4 III giant with radius of about 37R☉. The system mass ratio was derived to be about 0.56 and inclination close to 90 degrees. The disk seen edge-on contributes to the observed light curves very little. Its main effect in the light curve is due to its eclipse of the giant star observed as the deeper minimum. Such a model could explain some cases of the β -Lyr paradox - invisibility in the spectrum of the more massive star due to its obscuration by an optically thick accretion disk, in systems with inclination close to 90 degrees.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disk - binaries: eclipsing - stars: individual: UU Cnc

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 V* UU Cnc SB* 08 02 30.8976188208 +15 10 41.914066512   10.26 8.82 8.1   K4III 76 0
2 V* RZ Oph SB* 18 45 46.3797796536 +07 13 12.280811376   11.00 10.00     F3Ibe 111 0
3 V* KU Cyg SB* 20 12 45.1080494856 +47 23 41.374653360   11.70 11.04     F4Iae+M0III 92 0

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