Star formation in galaxies

Ebook "On the formation of the most massive stars in the galaxy" presents results of Submillimeter Array (SMA) and Very Large Array (VLA) studies of massive star formation regions in the early stages of ionization, as well as an analysis of numerical simulations of the evolution of these young HII regions. The results favor a picture in which very massive stars form in accretion flows that are partially ionized and that keep accreting material from their environment.

131p tachieuhoa 28-01-2024 9 2   Download

Ebook Planets, stars and stellar systems – Volume 6: Extragalactic astronomy and cosmology present content star formation in galaxies, the cool ism in galaxies, the influence of environment on galaxy evolution, the large-scale structure of the universe, the distance scale of the universe...

707p thanghuynh1504 10-05-2020 27 2   Download

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.

409p tom_123 14-11-2012 55 10   Download

In our quest to elucidate the origin of the universe and the formation of galaxies, particularly that of the Milky Way in which we live, astounding progress has been made in recent years through observational and theoretical studies. Not only have gigantic surveys covering a large fraction of the sky brought statistics enlightening evolutionary paths of galaxies, but powerful instruments, such as radio interferometers and ground- and space-based optical/ infrared telescopes, have been able to map individual objects with high sensitivity and spatial resolution.

422p tom_123 14-11-2012 60 9   Download

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.

6p kidlucky 22-04-2010 3339 686   Download