Results 231 to 240 of about 229,704 (266)

On the Expansion of the Orion-Nebula Cluster

The Astrophysical Journal, 1971
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A new star in the nebula of Orion

The Astronomical Journal, 1897
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High-temperature ²⁰⁵Tl decay clarifies ²⁰⁵Pb dating in early Solar System. [PDF]

Nature
Leckenby G, Sidhu RS, Chen RJ, Mancino R, Szányi B, Bai M, Battino U, Blaum K, Brandau C, Cristallo S, Dickel T, Dillmann I, Dmytriiev D, Faestermann T, Forstner O, Franczak B, Geissel H, Gernhäuser R, Glorius J, Griffin C, Gumberidze A, Haettner E, Hillenbrand PM, Karakas A, Kaur T, Korten W, Kozhuharov C, Kuzminchuk N, Langanke K, Litvinov S, Litvinov YA, Lugaro M, Martínez-Pinedo G, Menz E, Meyer B, Morgenroth T, Neff T, Nociforo C, Petridis N, Pignatari M, Popp U, Purushothaman S, Reifarth R, Sanjari S, Scheidenberger C, Spillmann U, Steck M, Stöhlker T, Tanaka YK, Trassinelli M, Trotsenko S, Varga L, Vescovi D, Wang M, Weick H, Yagüe Lopéz A, Yamaguchi T, Zhang Y, Zhao J.   +58 more
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Variations in the spectrum of the Orion nebula.

The Astrophysical Journal, 1897
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The Distance of the Orion Nebula [PDF]

Publications of the Astronomical Society of the Pacific, 1931
The fainter stars situated in the central part of the Orion nebula, in the immediate neighborhood of the Trapezium, form a well-marked cluster quite comparable with other galactic star clusters ; for convenience we may call it the Trapezium cluster. This cluster is not well shown on ordinary photographs on account of the great brightness of the nebula ...
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The structure of the Orion nebula

Publications of the Astronomical Society of the Pacific, 1974
The Orion nebula is the best studied of all H II regions. The experimental data for this nebula are reviewed, and interpretive models of the structure of both the nebula and its environs are developed. The H II region is composed of an inner 3-min core surrounding the exciting star theta 1 C which is partially imbedded on the near side of a massive ...
R. H. Gammon, R. M. Hjellming, B. Balick
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THE PARALLAX OF THE ORION NEBULA

Publications of the Astronomical Society of the Pacific, 1919
In Harvard Circular, 205, the writer obtained the value p".ooo5 for the parallax of this object. In Contributions of the Mount Wilson Solar Observatory, 147, 62, just published, Professor Kapteyn obtains the value 0^.0054 zbc/'.oocx). Since both results were deduced by practically the same method, that of comparing the brightness of the stars ...
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Structure of the Orion Nebula

Publications of the Astronomical Society of the Pacific, 2001
ABSTRACT The nature of the structure of the Orion Nebula has become clearer but more complex. Quantitative application of simple photoionization theory has allowed construction of a three‐dimensional model of the main ionization front, while high‐resolution study of the flow of [O i], [O ii], [O iii], and [S iii] has allowed determination of how this ...
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Hydrodynamical models of the Orion-KL Nebula

Astrophysics and Space Science, 1986
Abstract As a possible model of the Orion KL Nebula, we investigate the interaction between isotropic stellar wind from an embedded protostar and an ambient molecular cloud by two-dimensional hydrodynamical computations. The cloud configurations are given by a certain class of equilibrium solutions for rotating axisymmetric isothermal ...
Satoru Ikeuchi, Toru Okuda
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