منابع مشابه
Modelling Intermediate Age and Old Stellar Populations in the Infrared
In this paper we have investigated the spectrophotometric properties of the Asymptotic Giant Branch (AGB) stars and their contribution to the integrated infrared emission in simple stellar populations (SSP). Adopting analytical relations describing the evolution of these stars in the HR diagram and empirical relations for the mass-loss rate and the wind terminal velocity, we were able to model ...
متن کاملOld and Intermediate-age Stellar Populations in the Magellanic Clouds
The Magellanic Clouds have galactocentric distances of 50 and 63 kiloparsecs, making it possible to probe the older populations of clusters and stars in some detail. Although it is clear that both galaxies contain an old population, it is not yet certain whether this population is coeval with the date of formation of the oldest globulars in the Milky Way. The kinematics of this old population i...
متن کاملLost dignity: predominant experience of old age by the elderly
Paying attention to the views of the elderly and identifying their understanding of old age can be great help for proper consideration about their needs and problems. The purpose of this study was to understand the predominant experience of elderly people of aging. Hermeneutics phenomenology was used to collect data, and the van Manen's method was implemented to analyze those data. The required...
متن کاملOptimization of Starburst99 for Intermediate-Age and Old Stellar Populations
We have incorporated the latest release of the Padova models into the evolutionary synthesis code Starburst99. The Padova tracks were extended to include the full asymptotic giant branch (AGB) evolution until the final thermal pulse over the mass range 0.9 to 5 M⊙. With this addition, Starburst99 accounts for all stellar phases that contribute to the integrated light of a stellar population wit...
متن کاملGalactic Stellar Populations
The history of the formation and evolution of the Milky Way Galaxy is found in the spatial distribution, kinematics, age and chemical abundance distributions of long-lived stars. From this fossil record one can in principle extract the star formation histories of different components, their chemical evolution, the stellar Initial Mass Function, the merging history – what merged and when did it ...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 1998
ISSN: 1539-2996
DOI: 10.1017/s1539299600022152