By Martin F. McCarthy S.J. (auth.), Edith A. Müller (eds.)
It has turn into a convention within the Union to post the Invited Discourses and the complaints 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 style and it includes a few of the clinical highlights of the Grenoble common meeting. so that it will lessen its dimension it was once determined to put up its content material in separate components. The half (I) includes the complete texts of the In vited Discourses given through Prof. J.-C. Pecker and by way of Dr. C. Sagan, and an summary of Dr. P. Morrison's paper, hence complying along with his desire to forego booklet of the whole textual content of his Discourse. moreover it collects the lawsuits of 3 Joint Discussions and one Joint assembly all of that are comparable basically to observations from area, to exterior galaxies and to cosmology. half (TI) comprises the court cases of the 4 Joint Discussions and one Joint assembly comparable basically to stars and the constitution of our Galaxy. basically quantity four (parts I and TI) of the Highlights displays just a a part of the medical actions which happened on the Grenoble common meeting. Many extra very important papers and discussions have been held in the course of fee conferences and joint conferences. they're 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
Example text
1976, Proper MOtion Survey with the 48-Inch Schmidt Telescope XLVI, Univ. of Minnesota Press, Minneapolis. D. Thesis). : 1976, Astron. J. 81, 350. : 1960, Astron. J. 65, 644. 04 Ms/pc 3 depended on observation of high latitude blue stars by Sandage and Luyten made that same year; they found one blue white dwarf per square degree down to the eighteenth magnitude. Are there any observational programs in progress or planned which might extend these studies to fainter magnitudes? King: In a Berkeley program, George Chiu is determining proper motions of all stars in three fields of 1/10 square degree each.
P. 1976, Astron. and Astrophys. submitted. Schmidt, M. 1975, Astrophys. J. 202,22. DENSITY LAW, VERTICAL DISTRIBUTION AND VERTICAL GRADIENT OF METAL ABUNDANCES FOR G AND K GIANTS M. Grenon Ooservatoire de Geneve A systematic photometric investigation on stars of spectral type G4 to K4 is performed in both polar caps in symmetric coaxial cones. According to a calibration of the Geneva system, Mv, Teff and [M/H] ratio have oeen now derived for aoout 400 stars. For the computation of density law, a special care has been taken to avoid selection oiaises related to variations of mean age or metal aoundance.
Hansen and K. Gyldenkerne of Copenhagen. We have measured the radial velocities of all the HD stars of type KO and later, and many of the G5 stars, within 15° of the Galactic Pole, using the Cambridge photoelectric spectrometer. In addition, we have observed all the stars classified as K giants by Upgren in his declination zones 25° to 31°, using the spectrometer on the Hale telescope. There are about 900 stars observed altogether, including about 200 Upgren stars, running down to twelfth magnitude or so, which are not in the Henry Draper Catalogue.