Search Results - "Thackeray, A. D."

Two Hundred Years of the Radcliffe Observatory by THACKERAY, A. D

“…Dr Thackeray, the Radcliffe Observer, traces the history of the Radcliffe Observatory at Oxford and later in South Africa…”
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Spectroscopic Indications of an Internal Spiral Arm in the Galaxy by THACKERAY, A. D

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Spectrum of ρ Cassiopeiæ by THACKERAY, A. D

“…The spectrum of the irregular variable ρ Cassiopeiæ has been variously classified as G7 (Victoria), cG0 (Mt. Wilson), F8p (Yerkes) and F8p (Harvard), the last…”
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A Short-lived Solar Phenomenon in High Latitude by THACKERAY, A. D

“…On the morning of June 19, 1947, at 09h. 46m. u.t., while scanning the solar disk with the spectro-helioscope of the Solar Physics Observatory, Cambridge, in…”
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The Extinction Law in the Magellanic Clouds by BRÜCK, M. T, LAWRENCE, L. C, NANDY, K. N, THACKERAY, A. D, WOOD, R

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Distances of the Magellanic Clouds by THACKERAY, A. D, WESSELINK, A. J

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Spectra of the low-excitation nebulosities around AG Carinae and HD 138403 by Thackeray, A. D.

“…Complex splitting of lines in the ring nebula surrounding the PCyg supergiant AG Car is observed and discussed. The system is contrasted with the…”
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Variations of S Dor and HDE 269006 by Thackeray, A. D.

“…S Dor has recovered from a deep minimum which lasted 10 yr. Its radial velocity determined from [Fe II] emission undistorted by P Cyg absorption has remained…”
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Coudé Spectra of Eta Carinae and The Strongest Lines of [Fe II] and [Ni II] by Thackeray, A. D.

“…Coudé spectra of the nucleus of η Carinae in the ranges of wavelength 3100–4250 Å and Hβ–6850 Å have been measured. Wavelengths and estimated intensities are…”
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Cobalt in Eta Carinae by Thackeray, A. D.

“…Support for identifying λ 4152·5 in Eta Carinae with [Co II] is found in the presence of seven more possible identifications of weak lines in that region. But…”
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Magellanic Cloud Stars by THACKERAY, A. D

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The Spectroscopic Orbit of the O-type Subdwarf HD 49798 by Thackeray, A. D.

“…A spectroscopic orbit of the single-lined O6 binary HD 49798 is derived. The period is 1 ·5477 days and a mass-function of $0\cdot272\,\pm \,0\cdot0.22$ is…”
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The Infra-Red Spectrum of Eta Carinae by Thackeray, A. D.

“…Measured wave-lengths and intensities of 143 emission lines between 6666 and 9122A in the spectrum of Eta Carinae are presented, based on four Radcliffe coudé…”
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Nickel and Copper in the Orion Nebula by Thackeray, A. D.

“…The probable presence of three lines of Ni II and one of Cu II in published spectra of the Orion nebula is pointed out…”
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Identifications in the Spectra of Eta Carinae and RR Telescopii by Thackeray, A. D.

“…Wave-lengths and intensity estimates of lines in the spectra of Eta Carinae and RR Telescopii between 3700 and 8900 A are presented. Both spectra are…”
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Energy Levels of Ca VII from Observations of RR Telescopii by Thackeray, A. D.

“…Three lines attributed to [Ca VII] have been found present in RR Tel since 1967. Their measured wavelengths lead to slightly revised energy levels of Ca VII…”
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Periods and Light-Curves of Variable Stars in NGC 121 by Thackeray, A. D.

“…82 photographs of the globular cluster NGC 121 on the outskirts of the Small Magellanic Cloud, covering a total range of 9 years but mostly concentrated in…”
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Some Southern Stars Involved in Nebulosity by Thackeray, A. D.

“…An outer shell of nebulosity surrounding Eta Carinae is described. AG Carinae, HD 138403 and Co. D – 46° 11816 are found to be surrounded by nebulous disks or…”
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The Emission Line Spectrum of the Eclipsing Variable AR Pavonis by Thackeray, A. D.

“…The bright line spectrum of AR Pav is described. During eclipse the intensity of the H lines weakens relative to the nebular lines; He I weakens more, while He…”
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The Evolution of the Wolf–Rayet Features of the Slow Nova, RR Telescopii by Thackeray, A. D., Louise Webster, B.

“…Between 1951 and 1960, the spectrum of RR Telescopii contained broad emission bands similar to those in Wolf–Rayet stars, as well as a narrow nebular-line…”
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