TY - GEN
T1 - Star formation in the early universe
AU - Omukai, Kazuyuki
PY - 2011/4
Y1 - 2011/4
N2 - In low-metallicity environments, massive stars are more easily formed than in the solar neighborhood. In this article, we see the following examples of low-mass star formation. We first describe the first star formation in the universe and argue that they are typically ordinary-sized massive stars, rather than very massive (> 100M ·) ones. Next, we see how the metal-enrichment changes the thermal evolution of gas, thereby causing the shift of characteristic stellar mass towards lower mass. Finally, we discuss the possibility of forming supermassive stars in some special conditions in young galaxies.
AB - In low-metallicity environments, massive stars are more easily formed than in the solar neighborhood. In this article, we see the following examples of low-mass star formation. We first describe the first star formation in the universe and argue that they are typically ordinary-sized massive stars, rather than very massive (> 100M ·) ones. Next, we see how the metal-enrichment changes the thermal evolution of gas, thereby causing the shift of characteristic stellar mass towards lower mass. Finally, we discuss the possibility of forming supermassive stars in some special conditions in young galaxies.
KW - Pop II Stars
KW - Pop III Stars
KW - Star Formation
UR - http://www.scopus.com/inward/record.url?scp=84866262119&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866262119&partnerID=8YFLogxK
U2 - 10.1017/S1743921312012951
DO - 10.1017/S1743921312012951
M3 - Conference contribution
AN - SCOPUS:84866262119
SN - 9781107019799
T3 - Proceedings of the International Astronomical Union
SP - 216
EP - 223
BT - Death of Massive Stars
A2 - San Antonio, Peter W. A.
A2 - Kawai, Nobuyuki
A2 - Pian, Elena
ER -
