Star Formation and Early Evolution

2006 ◽  
pp. 105-116
Keyword(s):  
Star Formation ◽  
Early Evolution

scholarly journals On the early evolution of Local Group dwarf galaxy types: star formation and supernova feedback

2018 ◽  
Vol 479 (2) ◽  
pp. 1514-1527 ◽  
Author(s):  
José R Bermejo-Climent ◽  
Giuseppina Battaglia ◽  
Carme Gallart ◽  
Arianna Di Cintio ◽  
Chris B Brook ◽  
...  
Keyword(s):  
Star Formation ◽  
Local Group ◽  
Dwarf Galaxy ◽  
Early Evolution ◽  
Supernova Feedback

scholarly journals The early evolution of low mass stars and brown dwarfs

2009 ◽  
Vol 5 (H15) ◽  
pp. 755-755
Author(s):  
Isabelle Baraffe
Keyword(s):  
Magnetic Field ◽  
Star Formation ◽  
Brown Dwarfs ◽  
Early Evolution ◽  
Evolutionary Models ◽  
Low Mass Stars ◽  
Low Mass ◽  
Effects Of Rotation ◽  
Star Formation Regions

My talk will focus on the early evolution of low mass objects. I will discuss the main uncertainties on current evolutionary models and the effects of rotation, magnetic field and early accretion history on young object's structure. I will also present possible solutions to the well known spread in HRD observed in star formation regions for objects of a few Myr old.

scholarly journals Evolusi Bintang pada Pembentukan Tata Surya dan Sistem Keplanetan

2016 ◽  
Vol 5 (2) ◽  
pp. 245
Author(s):  
Khilyatul Khoiriyah
Keyword(s):  
Star Formation ◽  
Solar System ◽  
Planetary Systems ◽  
Protoplanetary Disks ◽  
Early Evolution ◽  
Giant Planets

This research is the literature studies that provide an introduction to the theory of the formation and early evolution of solar system and planetary systems. Theories that discussed are limit on the theory which has been closed to the truth of observation result. Topics include the structure of solar system, star formation, the structure of evolution and dispersal of protoplanetary disks, planetesimals formation, terrestrial and giant planets formation, the formation of the smaller objects in the solar system and planet migration.Penelitian ini merupakan studi literatur yang membahas tentang masalah pembentukan dan evolusi awal tata surya dan sistem keplanetan dengan memberikan konsep dasar yang ringkas. Teori-teori yang dikaji secara khusus dibatasi pada teori yang telah mendekati kebenaran dari hasil pengamatan. Topik yang dibahas adalah struktur tata surya, pembentukan bintang, struktur evolusi dan pembubaran cakram protoplanet, pembentukan planetesimal, planet terestrial dan planet raksasa, pembentukan benda-benda kecil dalam tata surya dan migrasi planet.

Star formation in young galaxies

1980 ◽  
Vol 296 (1419) ◽  
pp. 299-302 ◽  
Keyword(s):  
Star Formation ◽  
Elliptical Galaxies ◽  
Early Evolution

Some theoretical and observational reasons are given for regarding star formation as an induced process that proceeds in a series of bursts triggered by dynamical events, and it is suggested that intense bursts of star formation may have been particularly important for the early evolution of elliptical galaxies.

Angular momentum during star formation and early evolution

2013 ◽  
Vol 62 ◽  
pp. 3-23 ◽  
Author(s):  
P. Hennebelle ◽  
S. Fromang ◽  
S. Mathis
Keyword(s):  
Angular Momentum ◽  
Star Formation ◽  
Early Evolution

scholarly journals Early Stages of Stellar Evolution

1977 ◽  
Vol 75 ◽  
pp. 179-197 ◽  
Author(s):  
S. E. Strom
Keyword(s):  
Star Formation ◽  
Observational Data ◽  
Stellar Evolution ◽  
Early Evolution ◽  
Interstellar Clouds ◽  
The Past ◽  
Early Stages ◽  
Microwave Techniques

A wealth of new observational data made available through the advent of modern infrared and microwave techniques, have provided astronomers with their first glimpses into the current-epoch stellar wombs - dark interstellar clouds. As a consequence, the past ten years have witnessed major advances in our understanding of the early evolution of stars and the mechanisms which trigger star formation. A future, more detached view of this period might suggest that we have achieved

scholarly journals Contribution of globular clusters to halos

2015 ◽  
Vol 12 (S316) ◽  
pp. 287-293
Author(s):  
Angela Bragaglia
Keyword(s):  
Star Formation ◽  
Formation Mechanism ◽  
Globular Clusters ◽  
Massive Star ◽  
Milky Way ◽  
Star Clusters ◽  
Early Evolution ◽  
Light Elements ◽  
Halo Stars ◽  
Chemical Signatures

AbstractThe contribution of massive star clusters to their hosting halo dramatically depends on their formation mechanism and their early evolution. Massive globular clusters in the Milky Way (and in other galaxies) have been shown to display peculiar chemical patterns (light-elements correlations and anti-correlations) indicative of a complex star formation, confirmed by photometric evidence (spread or split sequences). I use these chemical signatures to try to understand what is the fraction of halo stars originally born in globular clusters.

scholarly journals Super Hot Cores in NGC 253: witnessing the formation and early evolution of super star clusters

2019 ◽  
Vol 491 (3) ◽  
pp. 4573-4589 ◽  
Author(s):  
F Rico-Villas ◽  
J Martín-Pintado ◽  
E González-Alfonso ◽  
S Martín ◽  
V M Rivilla
Keyword(s):  
Star Formation ◽  
Uv Radiation ◽  
Star Clusters ◽  
Early Evolution ◽  
Evolutionary Stage ◽  
Vibrationally Excited ◽  
The Galaxy ◽  
Order Of Magnitude ◽  
Super Star Clusters ◽  
Inside Out

ABSTRACT Using 0.2 arcsec (∼3 pc) ALMA images of vibrationally excited HC3N emission (HC3N*) we reveal the presence of eight unresolved Super Hot Cores (SHCs) in the inner 160 pc of NGC 253. Our LTE and non-LTE modelling of the HC3N* emission indicate that SHCs have dust temperatures of 200–375 K, relatively high H2 densities of (1−6) × 106 cm−3 and high IR luminosities of (0.1–1) × 108 L⊙. As expected from their short-lived phase (∼104 yr), all SHCs are associated with young super star clusters (SSCs). We use the ratio of luminosities from the SHCs (protostar phase) and from the free–free emission (ZAMS star phase), to establish the evolutionary stage of the SSCs. The youngest SSCs, with the larges ratios, have ages of a few 104 yr (proto-SSCs) and the more evolved SSCs are likely between 105 and 106 yr (ZAMS-SSCs). The different evolutionary stages of the SSCs are also supported by the radiative feedback from the UV radiation as traced by the HNCO/CS ratio, with this ratio being systematically higher in the young proto-SSCs than in the older ZAMS-SSCs. We also estimate the SFR and the SFE of the SSCs. The trend found in the estimated SFE ($\sim 40{{\ \rm per\ cent}}$ for proto-SSCs and $\gt 85{{\ \rm per\ cent}}$ for ZAMS-SSCs) and in the gas mass reservoir available for star formation, one order of magnitude higher for proto-SSCs, suggests that star formation is still going on in proto-SSCs. We also find that the most evolved SSCs are located, in projection, closer to the centre of the galaxy than the younger proto-SSCs, indicating an inside-out SSC formation scenario.

scholarly journals Analysis of enrichment histories for elements and two modes of star formation during the early evolution of Milky Way

2014 ◽  
Author(s):  
Shimako Yamada ◽  
Takuma Suda ◽  
Yutaka Komiya ◽  
Wako Aoki ◽  
Masayuki Y Fujimoto
Keyword(s):  
Star Formation ◽  
Milky Way ◽  
Early Evolution
Sign in / Sign up

Export Citation Format

Share Document