Clusters and Nebulae
نویسندگان
چکیده
منابع مشابه
Bubbles in Planetary Nebulae and Clusters of Galaxies: Precessing Jets
I derive the condition for narrow jets with varying axis, e.g., precessing jets, to inflate more or less spherical (fat) bubbles in planetary nebulae and clusters of galaxies. This work follows a previous work dealing with wide jets, i.e., having a wide opening angle. The expressions derive here are qualitatively and quantitatively similar to the conditions for inflating fat bubbles by non-prec...
متن کاملBubbles in Planetary Nebulae and Clusters of Galaxies: Jet Properties
I derive constraints on jet properties for inflating pairs of bubbles in planetary nebulae and clusters of galaxies. This work is motivated by the similarity in morphology and some non-dimensional quantities between X-ray-deficient bubbles in clusters of galaxies and the optical-deficient bubbles in planetary nebulae, which was pointed out in an earlier work. In the present paper I find that fo...
متن کاملPairs of Bubbles in Planetary Nebulae and Clusters of Galaxies
I point to an interesting similarity in the morphology and some nondimensional quantities between pairs of X-ray-deficient bubbles in clusters of galaxies and pairs of optical-deficient bubbles in planetary nebulae (PNs). This similarity leads me to postulate a similar formation mechanism. This postulate is used to strengthen models for PN shaping by jets (or collimated fast winds: CFW). The pr...
متن کاملBubbles in Planetary Nebulae and Clusters of Galaxies: Jet Bending
We study the bending of jets in binary stellar systems. A compact companion accretes mass from the slow wind of the mass-losing primary star, forms an accretion disk, and blows two opposite jets. These fast jets are bent by the slow wind. Disregarding the orbital motion, we find the dependence of the bending angle on the properties of the slow wind and the jets. Bending of jets is observed in p...
متن کاملPhotometric and spectroscopic study of low mass embedded star clusters in reflection nebulae ⋆
An analysis of the candidate embedded stellar systems in the reflection nebulae vdBH-RN 26, vdBH-RN 38, vdBH-RN 53a, GGD 20, ESO 95-RN 18 and NGC 6595 is presented. Optical spectroscopic data from CASLEO (Argentina) in conjunction with near infrared photometry from the 2MASS Point Source Catalogue were employed. The analysis is based on source surface density, colour-colour and colour-magnitude...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1921
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07161921-46