New PDF release: Algols: Proceedings of the 107th Colloquium of the

By Alan H. Batten (auth.), Alan H. Batten (eds.)

ISBN-10: 9400924135

ISBN-13: 9789400924130

ISBN-10: 9401075875

ISBN-13: 9789401075879

When leaving the Victoria airport the day ahead of our Colloquium, I observed a van of the Dunsmuir resort marked with giant letters which I learn as "Alcohol Colloquium". I do usually make such mistakes as a result of the worldwide, informal, and careless means during which I learn a number of advertisements, and checked myself quick to learn it effectively as "Algol Colloquium". hundreds of thousands of fellow electorate may perhaps simply make an identical mistake, and no apology can be anticipated. Even I learn and listen to the observe alcohol extra often than Algol, even if i need to say that Algols have given me extra excitement and less complications through the years; in that, even though, i'll be a singularity, and doubtless a pitiful one at that. Being appointed Chairman of the medical Organizing Committee, i could be deemed to be a purer" Algolist" than different investigators, even if my diversity of lively pursuits is far broader; and an analogous is correct approximately all of the 28 invited audio system and all of the different members of the Colloquium. Our curiosity are strongly diverse, yet there are numerous sturdy purposes that introduced us jointly at this Colloquium.

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Additional resources for Algols: Proceedings of the 107th Colloquium of the International Astronomical Union held in Sidney, B.C., Canada, August 15–19, 1988

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Lubow, S. , and Shu, F. H. , 198, 383. Peters, G. J. 1980, in Close Binary Stars: Observations and Interpretations (IAJ] Symposium No. 88), ed. M. J. P1avec, D. M. Popper, and R. K. Ulrich (Dordrecht: Reidel), p. 287. P1avec, M. J. , 96, 755. Struve, O. 1948, Publ. A. S. , 60, 160. Struve, o. , 109, 487. Wyse, A. B. 1934, Lick Obs. , No. 17, 42. PETERS DISCUSSION Rucinski commented on the desirability of expressing emission-line strengths in absolute flux units and also enquired if there was comparable information available from any other Balmer line, since knowledge of the Balmer decrement would be physically significant.

Hilditch asked if the ratio of dust-to-gas derived by Olson for the disks was comparable to those found in stellar winds from single latetype stars. Olson believed the latter not to be well-known. In response to a query from Eaton about rate of mass-loss in the wind from the loser, Olson stated that the accretion rate in the disk must approach 10- 6 ~ yr- l , but the loss rate derived must depend on the unknown efficiency of the disk in capturing material. g. 105) Livio emphasized the difficulty of forming large disks, such as that observed in RZ Oph, if the loser does not fill its Roche lobe; insufficient angular momentum would be accreted from an ordinary wind.

The resulting predictions are shown as open circles in Fig. 5. 5xlO- 7 , so this disk is less contaminated by dust than is the disk in KU Cyg. This model at least demonstrates that it is possible to reach reasonable agreement with observations. NEW OBSERVATIONS OF BOTH BINARIES It would obviously be desirable to observe both pre- and post-primary eclipse dips in RZ Oph in the same orbital cycle. It will be possible to do so during 1989, and we intend to observe RZ Oph photometrically and spectrographically throughout the roughly lOO-day interval.

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Algols: Proceedings of the 107th Colloquium of the International Astronomical Union held in Sidney, B.C., Canada, August 15–19, 1988 by Alan H. Batten (auth.), Alan H. Batten (eds.)

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