Publications of the Astronomical Society of the Pacific

Borra, Ermanno F.; Wehlau, William H.

doi: 10.1086/129098pmid: N/A

The results of photographic photometry of Comet Bennett on several nights with narrow- band interference filters are presented. The filters, centered at 3878 A, 4870 A, and 5117 A served to photograph the comet in light from CN, the continuum of reflected sunlight, and C2 respectively. The extension of the reflected sunlight into the tail, compared with the light from CN and C2,is given quantitatively. Key words: comets - cometary photometry - photographic photometry

McNamara, D. H.; Hansen, H. K.; Wilcken, S. K.

doi: 10.1086/129099pmid: N/A

Analysis of photometric observations of the sharp-line, F2 eclipsing binary ZZ Bootis is reported. The light curve exhibits two practically identical partial eclipses that are used to derive photometric elements. Narrow- and intermediate-band photometry are combined with the photometric and spectroscopic elements to derive accurate radii, masses, surface gravities, absolute magnitudes, and color indices of the two stars. Key words: eclipsing variable - photometry

King, Ivan R.

doi: 10.1086/129100pmid: N/A

THE PROFILE OF A STAR IMAGE IVAN R. KING Berkeley Astronomy Department, University of California Received 25 January 1971 Various data are assembled to construct the profile of a star image, from its central peak out to a radius of six degrees. The profile has a central core, an exponential drop, and an extended inverse-square aureole. The origin of its shape is not well understood. Key word: star image profile

Chincarini, Guido

doi: 10.1086/129101pmid: N/A

Published observations on compact galaxies indicate that their mass distribution is similar to that for normal galaxies. The average mass-to-luminosity ratio is (9)'(/L) 50 '0IL0 Key words: galaxies - compact galaxies

Wegner, Gary

doi: 10.1086/129102pmid: N/A

The spectrum of the high magnetic-field white dwart, Grw +70 8247 is discussed. Two new features near 5692 A and 5852 A are reported. Key words: white dwarf- red spectrum

Dworetsky, M. M.; Popper, D. M.; Dearborn, D. S.

doi: 10.1086/129103pmid: N/A

We have determined that the average component of 8 ISqu has a mass 9)? = 1.23 I 0.089)? , and an absolute magnitude Mv = + 4.0 I 0.1. This determination is based on new observations of the system as a spectroscopic binary combined with data from the visual orbit. Key words: stellar masses - stellar luminosities - visual binary stars - spectroscopic binary stars

Riddle, R. K.; Behall, A. L.; Guetter, H. H.; Christy, J. W.

doi: 10.1086/129104pmid: N/A

Key words: parallax - proper motion

Bookmyer, Beverly B.

doi: 10.1086/129105pmid: N/A

Photoelectric observations of AH Tauri have been obtained with B and V filters on two nights; an epoch of minimum light and improved light elements are given. Key words: eclipsing binaries - W Ursae Majoris stars

Cowley, Anne P.

doi: 10.1086/129106pmid: N/A

ANNE P. COWLEY* University of Michigan Astronomy Department Received 28 December 1970 Recent spectrograms of HR 2902 show a pronounced shell-type absorption spectrum in the ultraviolet and Fe ii emission lines greatly enhanced compared to observations of five years ago. Key words: shell spectrum - radial velocity

Miller, Freeman D.; Blanco, Victor M.; Gomez, Arturo

doi: 10.1086/129107pmid: N/A

A faint, sunward-pointing spike of Comet Tago-Sato-Kosaka (1969 g) visible shortly after peribelipn passage is . The secondary tail is evidently a thin sheet of nyateri4l con- fined to the orbital like its more spedacular counterpart in Comet Arend-Roland. s: comet - comet tails