The study of the formation and early evolution of stars has been an ever
growing part of astrophysical research. Traditionally, often in the shadow of
its big brothers (i.e., the study of stellar structure, stellar atmospheres and
the structure of galaxies), it has become evident that early stellar evolution
research contributes essentially to these classical fields. There are a few new
items on the list of traditional astrophysical studies, some of which are more
related to features known from the extreme late stages of stellar evolution.
The international Colloquium “Open Issues in Local Star Formation
and Early Stellar Evolution” was held in Ouro Preto (Brazil) from April
05 to 10, 2003. The Colloquium took place in the “Parque Metal´urgico”,
an old iron industry that has been transformed into a nice modern conference
center. Ouro Preto is a 18th century colonial city that has been
declared a Cultural Heritage of Mankind in 1980. It is situated in the
hills of the State of Minas Gerais at about 100 km from Belo Horizonte....
Đọc kỹ đoạn văn sau và chọn phương án đúng (A hoặc B, C, D) cho mỗi câu từ 1 đến 12. Galaxies are not evenly distributed throughout the universe. A few are found alone, but almost all are grouped in formations termed galactic clusters. These formations should not be confused with stellar clusters, globular clusters of stars that exist within a galaxy.