Read e-book online Highlights of Astronomy: Part II As Presented at the XVIth PDF

By Martin F. McCarthy S.J. (auth.), Edith A. Müller (eds.)

ISBN-10: 9027708320

ISBN-13: 9789027708328

ISBN-10: 9401012504

ISBN-13: 9789401012508

It has turn into a convention within the Union to put up the Invited Discourses and the court cases of the Joint Discussions held at a Gene­ ral meeting in a separate quantity entitled HIGHLIGHTS OF ASTRONOMY. this is often the fourth quantity of its type and it comprises a number of the clinical highlights of the Grenoble common meeting. so one can decrease its measurement it used to be made up our minds to post its content material in separate components. The half (I) includes the total texts of the In­ vited Discourses given via Prof. J.-C. Pecker and via Dr. C. Sagan, and an summary of Dr. P. Morrison's paper, therefore complying along with his desire to forego ebook of the total textual content of his Discourse. in addition it collects the complaints of 3 Joint Discussions and one Joint assembly all of that are similar basically to observations from house, to exterior galaxies and to cosmology. half (TI) includes the court cases of the 4 Joint Discussions and one Joint assembly comparable primarily to stars and the constitution of our Galaxy. essentially quantity four (parts I and TI) of the Highlights displays just a a part of the clinical actions which happened on the Grenoble normal meeting. Many extra vital papers and discussions have been held in the course of fee conferences and joint conferences. they are present in the Commissions' studies released within the Transactions Vol. XVI B, 1977.

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Additional info for Highlights of Astronomy: Part II As Presented at the XVIth General Assembly 1976

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3d Europ. Astr. Meet. , Toilisi, 351 MNRAS 1'72, 301 Astron. & Astrophys. 48~ 301 Edith A. ), Highlights of Astronomy, Vol. 4, Part II, 55. All Rights Reserlled. Copyright © 1977 by the IAU. POLARIZATION MEASUREIilENTS AND EXTINCTION NEAR THE NGP T. lfiarkkanen University of Helsinki, Observatory and Astrophysics Laboratory In order to study interstellar extinction near the NGP a polarization observation programme has been undertaken at the Metsiihovi Observatory of the University of Helsinki. 32 stars (b > 80 0 ) have been measured with an accuracy of a few hundredths of a percent.

J. , 30, 351), most of the stars in the forthcoming catalog have not been observed photometrically. 0 square degree. Observations in BVRI have been obtained for the 44 stars in the sample. Giants and dwarfs are distinguished by their location in the (B - V)-(V - I) diagram or from published proper motion data, where available. The absolute magnitudes of the dwarfs are determined from the MR-(R - I) relation, The density distribution perpendicular to the galactic plane of the dwarfs is consistent with the distribution for K giants found by Oort (1960).

Generally, there is no evidence for a dominant, young population among these stars. Edith A. ), Highlights of Astronomy, Vol. 4, Part II, 67. All Rights Reserved. Copyright © 1977 by the IA U. SWEDISH PROGRAMMES CONCERNING THE Z DISTRIBUTION OF STARS Tarmo Oja Astronomical Observatory, Uppsala, Sweden.

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Highlights of Astronomy: Part II As Presented at the XVIth General Assembly 1976 by Martin F. McCarthy S.J. (auth.), Edith A. Müller (eds.)

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